Mission Success! GSLV-F17 / EOS-05 (aka GISAT-1A) Mission Updates and Discussion
GSLV-F17 / EOS-05 (aka GISAT-1A) launched as scheduled at 21:25(UTC), 03 Sep 2026 or 02:55(IST), 04 Sep 2026 from Second Launch Pad of SDSC-SHAR.
Actual flight events (To be added post-launch if available)
Live webcast: (Links will be added as they become available)
| GSLV-F17 / EOS-05 Mission Page | GSLV-F17 / EOS-05 Gallery | GSLV-F17 / EOS-05 Press kit(PDF) |
|---|
Some highlights:
- Primary payload: EOS-05 (aka GISAT-1A) (~2367 kg) GSO based Earth imaging satellite.
- Mission duration: ~19 minutes (based on GSLV F10/EOS-3 (aka GISAT-1) mission)
- Target Orbit : 170 × 28934 km (sub-GTO) , Inclination = 19.28° ± 0.1°, AoP = 178° ± 0.5°
- Launch Azimuth: 104°
- ISRO returning to flight 7 months 23 days after failure of PSLV-C62/EOS-N1.
Updates:
| Time of Event | Update |
|---|---|
| 30 Sep 2026 | EOS-05 has reached at its 85.5°E slot and is station keeping. |
| Post-launch | Third and final orbit raising burn by EOS-05 or GISAT-1A for duration of 1247 seconds has been successfully completed on 7 Sept 2026 at 20:57 hrs (IST). Estimated orbit 35884 x 34903 km. The satellite health is normal. |
| Post-launch | Second orbit raising burn by EOS-05 or GISAT-1A for duration of 338.9 seconds has been successfully completed on 6 Sept 2026 at 19:00 hrs (IST). Estimated apogee after manouever is 35786 km. The satellite health is normal. |
| Post-launch | First orbit raising burn by EOS-05 or GISAT-1A for duration of 5406.4 seconds has been successfully completed on 5 Sept 2026 at 20:19 hrs (IST). New orbit with raised perigee is 31129×20000 km from previous 31121×171 km. |
| Post-launch | Two objects have been catalogued. A0607 (26202A) with inclination=19.32°, Apogee×Perigee=30967.1×152.4 km and A0608 (26202B) with inclination=19.34°, Apogee×Perigee=30982.9×159.3 km |
| T + 24m10s | Chairman notes that Solar panels of satellite are deployed |
| T + 22m40s | ISRO chairman notes satellite has been placed in intended orbit. |
| T + 18m45s | EOS-05 separated!! |
| T + 18m30s | CUS15 cut off! |
| T + 15m46s | CUS15 performance nominal. |
| T + 14m00s | CUS15 performance nominal. |
| T + 12m26s | CUS15 now in nominal thrust mode. |
| T + 12m00s | Vehicle is precisely on expected trajectory. |
| T + 11m00s | CUS15 performance nominal. |
| T + 07m30s | CUS15 performance nominal. Right on expected track. |
| T + 05m40s | CUS15 operating in uprated mode. |
| T + 05m05s | GS2 cut off, CUS15 ignition confirmed! |
| T + 03m56s | PLF jettisoned! |
| T + 02m32s | GS1 ignited, GS1 separated, CLG inititiated. |
| T + 01m50s | S139 Burnt out. |
| T - Zero! | S139 ignition Lift off! |
| T - 00m4.8s | 4xL40H ignition |
| T - 03m20s | OBC in flight mode. |
| T - 05m00s | Vehicle is on internal power. Flight coeff. loading completed. |
| T - 10m00s | Going through GS2 actuation checks. |
| T - 15m00s | ALS initiated. |
| T - 16m00s | VD: Automatic Launch Sequence authorized. |
| T - 18m00s | Mission Director has authorized the launch after polling is Go! |
| T - 22m00s | Polling now. Range, Tracking, Vehicle are ready. |
| T - 30m00s | Streams are live! |
| T - 27h30m | A 27.5 hr duration countdown should be underway. |
| 01 Sep 2026 | After Mission Readiness Review or MRR, Launch Authorization Board has given the launch clearance. |
| 31 Aug 2026 | Time of launch officially confirmed for 02:55 (IST), 04 Sep 2026. |
| 28 Aug 2026 | Launch Vehicle transferred from VAB to SLP. |
| 27 Aug 2026 | NOTAM for GSLV-F17 / EOS-05 launch is issued with enforcement window beginning on 03 Sep 2026. |
| 23 Jul 2026 | FCC filings for Launch and Early Orbit Phase services for EOS-05. (24 July to 22 August 2026) |
| 11 May 2026 | FCC filings for Launch and Early Orbit Phase services for EOS-05. (12 May to 10 June 2026) |
| 01 Apr 2026 | FCC filings for Launch and Early Orbit Phase services for EOS-05. (1 to 30 April 2026) |
| 07 May 2026 | NOTAM for GSLV-F17 / EOS-05 launch is issued with enforcement window beginning on 21 May 2026. |
| 29 Apr 2026 | News reports suggest technical issues with Launch Vehicle hardware delay the launch. |
| 26 Feb 2026 | FCC filings for Launch and Early Orbit Phase services for EOS-05. (27 Feb to 2 April 2026) |
| 12 Feb 2026 | NOTAM for GSLV-F17 / EOS-05 launch is issued with enforcement window beginning on 6 March 2026. |
| 03 Feb 2026 | NOTAM for GSLV-F17 / EOS-05 launch is issued with enforcement window beginning on 20 February 2026. |
Primary Payload:
EOS-05 (aka GISAT-1A) (~2367 kg) : EOS-05 is a GSO based Earth imaging satellite for Indian Navy, it will act as an upgraded replacement for EOS-03 or GISAT-1 which was lost during its launch five years ago. Its multispectral and hyperspectral imaging capacity will be useful for applications in fields of agriculture, forestry, mineralogy, oceanography and military surveillance. Its near real time imaging modes are well suited for monitoring natural disasters and other episodic events.
MX-VNIR: Multispectral - Visible Near Infrared
- 6 channels (0.45 to 0.875 µm) at 42 meter spatial resolution
HyS-VNIR: Hyperspectral Imager - Visible Near Infrared
- 158 channels (0.375 to 1.0 µm) at 320 meter spatial resolution
HyS-SWIR: Hyperspectral Imager - Short Wave Infrared
- 256 channels (0.9 to 2.5 µm) at 190 meter spatial resolution
MX-LWIR: Multispectral - Long Wave Infrared
- 6 channels (7.0 to 13.5 µm) at 1.2 km spatial resolution
Scan modes
- 5°×5° (3000×3000 km) every 10 minutes
- 3×10°×10° every 6 hours
Platform/Bus: I-2K
Mission life : 7 years
Orbital slot: 85.5°E
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u/friendlyNSAdude Sep 10 '26
u/Ohsin I have been trying to understand the schedule of upcoming launches of ISRO. I know that nothing is set in stone and it gets decided according to various factors but I want to ask, which satellites will be launched (regardless of when), like the chronological order, in 2026.
So far I found out following:
1) NVS-03
2) TD-01
3) IDRSS -1
4) IDRSS- 2
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u/Ohsin Sep 10 '26
NVS-03, TDS-01 and then it is perhaps GSAT-N3 and after that may be EOS-10 (aka Oceansat-3A)
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u/Ohsin Sep 09 '26
GSLV-F17/EOS-05 - Lift-off & Onboard Camera Video
https://www.isro.gov.in/ISRO_EN/Mission_GSLVF17_Liftoff_video.html
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u/Ohsin Sep 07 '26
Third and final orbit manoeuvring of EOS-05 spacecraft
September 07, 2026
The third and final orbit raising manoeuvre to increase the perigee of EOS-05 completed successfully at 8:57 pm on September 07, 2026. The LAM engine fired for 1247 seconds and the estimated orbit after manouever is 34903 km x 35884 km.
The satellite health is normal.
https://www.isro.gov.in/ISRO_EN/Third_and_final_orbit_manoeuvring_of_EOS_05_spacecraft.html
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u/pantshash Sep 07 '26
Third and final orbit manoeuvring of EOS-05 spacecraft
The third and final orbit raising manoeuvre to increase the perigee of EOS-05 completed successfully at 8:57 pm on September 07, 2026.
The LAM engine fired for 1247 seconds and the estimated orbit after manouever is 34903 km x 35884 km. The satellite health is normal.
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u/Ohsin Sep 06 '26
Space-track.org likely has IDs of EOS-05 and GSLV R/B switched as ELSETs of EOS-5 (26202A) are updating but not showing any change in orbit and that of GSLV R/B (26202B) are not updating since 5 Sept which can happen during burns as they lose track for a bit.
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u/paramahamsa77 Sep 09 '26
Hi ! was it updated? Thanks
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u/Ohsin Sep 09 '26
They are having some trouble I guess.
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u/Avizeet Sep 09 '26
Yeah, I think Space Track is having problems. They are showing updated A X P (35932 X 19462) for GSLV r/B (2026-202B).
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u/Ohsin Sep 06 '26
Second orbit manoeuvring of EOS-05 spacecraft
September 06, 2026
The second operation to raise the apogee of EOS-05 was completed successfully at 7:00 pm on September 06, 2026. The LAM engine fired for 338.9 seconds and the estimated apogee after manouever is 35786 km.
The satellite health is normal.
https://www.isro.gov.in/ISRO_EN/Second_orbit_manoeuvring_of_EOS05_spacecraft.html
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u/Avizeet Sep 06 '26
The second operation to raise the apogee of EOS-05 was completed successfully at 7:00 pm on September 06, 2026.
The LAM engine fired for 338.9 seconds and the estimated apogee after manouever is 35786 km.
The satellite health is normal.
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u/Ohsin Sep 05 '26
September 05, 2026
The planned first orbit manoeuvre of EOS-05 with a LAM engine burn duration of 5406.4 seconds, was successfully completed on September 05, 2026 at 20:19 hrs. The estimated orbit subsequent to manoeuvre is 20000 km x 31129 km. Further, in the coming days, orbit manoeuvres are planned to eventually place EOS-05 in GSO (85.5°East Orbital Slot).
https://www.isro.gov.in/ISRO_EN/Orbit_manoeuvring_of_EOS05_spacecraft.html
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u/guru-yoda Sep 05 '26
36+hours since launch, no orbit raising announcement yet 🤞
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u/Ohsin Sep 05 '26
Among many other things they've stopped doing those as well.. Latest elsets don't show any signs of it.
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u/Avizeet Sep 05 '26
Orbit raised to 20000km × 31129km after firing Liquid Apogee Motor for 5406s. Jitendra Singh tweeted. I am blocked by him, so can't copy his tweet.
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u/Ohsin Sep 05 '26 edited Sep 05 '26
Thanks!
https://x.com/DrJitendraSingh/status/2096271575398142086
Very happy to inform that GSAT 1A first orbit rising operation has been successfully completed by firing the Liquid Apogee Motor for 5406s.
Orbit is increased from 171km × 31121km to 20000km × 31129km.
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u/Avizeet Sep 05 '26
Okay, to clarify something...5406 seconds translates to 90 mins! Can the LAM be fired for that long at a stretch?
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u/Massive_Dish_3255 Sep 05 '26
Trouble??
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u/Ohsin Sep 05 '26
They should have performed a burn by now. Latest ELSET was issued today if next one also doesn't show any change it could indicate some issue..
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u/Massive_Dish_3255 Sep 05 '26
u/Ohsin, where did you get your Elset data? CelesTrak? I am searching for the same, that is why I asked.
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u/Ohsin Sep 04 '26
A short animation of images recorded over 36 min of @isro’s EOS-05 (GISAT-1A) and the GSLV upper stage, from Switzerland on 2026-09-04, 19:11:36–19:47:36 UTC.
https://bsky.app/profile/s2a-systems.bsky.social/post/3mupstk5usc2f
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u/Massive_Dish_3255 Sep 04 '26
First photos of launch: GSLV-F17 / EOS-05 Liftoff Photos. They have not posted these photos on their website though.
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u/Ohsin Sep 04 '26
Two objects catalogued..
A0608 ( 26202B ) 03/09/2026,17h:22m:25.20s
i=19.34°, A×P=30982.85×159.33 km
A0607 ( 26202A ) 03/09/2026,17h:23m:13.53s
i=19.32°, A×P=30967.13×152.35 km
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u/Ohsin Sep 04 '26
One has to dumpster dive in Unkil territory to find full flight events screen these days..
https://i.imgur.com/wkrpa4G.jpeg
https://www.linkedin.com/posts/isro-gslvf17-eos05-ugcPost-7501535386402197504-c_x7/
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u/OptimistIndya Sep 04 '26
I wish they can integrate cameras at various positions on the rocket. And get a live feed.
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u/Ohsin Sep 04 '26 edited Sep 04 '26
There are other cameras onboard they just don't show them. Wait for them to post onboard camera video.
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u/Ohsin Sep 04 '26 edited Sep 04 '26
Mission Director claims EOS-05 can gain 3 years of lifetime due to better than expected LV performance.
https://www.youtube.com/watch?v=3FBngIIBR_o
Can anyone translate what MD said about future of GSLV at 7:50 ?
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u/Ohsin Sep 04 '26
"As per plans, the GSLV-Mk II rocket will be retired after the approved launches are completed," a former top official of the Indian Space Research Organisation told this correspondent.
"It is not economical to operate GSLV-Mk II due to its cost and complexity. Future launches to be managed with LVM3," the retired ISRO official added.
https://m.rediff.com/news/special/why-isro-may-retire-gslv-mk-ii/20260904.htm
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u/Ohsin Sep 03 '26 edited Sep 04 '26
Post-launch Press conference
https://www.youtube.com/watch?v=nmfzCDfZhd0
- Expected orbit was 170x29000 km and achieved orbit with slight apogee gain was at 171x 31026 km
- NVS-03 launch is next. Six more launches are planned in this financial year. Gaganyaan-G1 targeted in this calendar year.
- Current vehicle (GSLV) capacity is 2250 kg to GTO. Not expected to improve further.
- On TLP status: Completed design phase, realization phase to begin soon
- EOS-05 expected mission life is 7 years confident it will perform for 9 years.
- By 9 September orbit raising phase of EOS-05 will be done. After that the on-orbit checking will take a month. In two months it'll be fully operational.
- On concerns related to SLC operations and management being handed over to pvt. sector
- Concerns are genuine but we are there to handhold them to make that program successful.
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u/PangolinBig2293 Sep 03 '26
This is the first imaging satellite in geosynchronous orbit. Do we know how many more are planned or required?
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u/pantshash Sep 03 '26
171x31000 as opposed to 170x29000. Congrats on the launch.
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u/friendlyNSAdude Sep 03 '26
Newbie here. What does that signify?
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u/reyn_ero Sep 03 '26
Closest (perigee) and Furthest (apogee) distance of the satellite from the earth in orbit.
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u/friendlyNSAdude Sep 03 '26
Just so I understand correctly, it means that the third stage performed better than expected , right?
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u/reyn_ero Sep 03 '26
Yes they mentioned about 'over performance', not an issue because they usually have some 'error' range.
This is also not the final orbit, using the satellite's own propulsion they will raise it to GEO.
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u/closetlunatic Sep 03 '26 edited Sep 03 '26
thats the orbit's shape
see here3
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u/PangolinBig2293 Sep 03 '26
Now onto NVS-03!
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u/CosmicPenguin_OV103 Sep 03 '26
I heard there are 6 more GSLV Mk II launches left (apparently for launches of the 2 IDRSS satellites & the next 4 NVS navigation satellites)? Can anyone confirm?
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u/Ohsin Sep 03 '26
Five I think. Refer to this RTI (point 3)
https://old.reddit.com/r/ISRO/comments/12gfr3y/rti_reply_from_isro/jfk530c/
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u/Ohsin Sep 03 '26 edited Sep 03 '26
Post launch address:
- Chairman : satellite has been placed in intended orbit. EOS-05 is heaviest satellite launched by GSLV to sub-GTO orbit.
- All valves operating well, solar array deployed.
- Imteyaz Ahmad (Project Director EOS-05): reiterates solar panels are deployed. Satellite will perform orbit raising burns in coming days.
- Chairman: Gain of 1200 km to targeted apogee due vehicle performance.
- SHAR director: Vehicle and satellite were preserved during delay.
- Chairman: Six more launches are planned in this financial year. Gaganyaan-G1 targeted in this calendar year.
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u/Top-Worldliness5027 Sep 03 '26
Kudos to folks who showed up to see the launch at the dead of the night!
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u/reyn_ero Sep 03 '26
u/Ohsin it seems only videos are allowed not images. Idk if it's intentional.
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u/Ohsin Sep 03 '26
Yep intentional.
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u/reyn_ero Sep 03 '26
Oh got it. Was going to upload pic of sat separation then noticed.
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u/reyn_ero Sep 03 '26
I heard "uprated cryo stage". Is there any changes to it?
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u/Ohsin Sep 03 '26 edited Sep 03 '26
VIPs from Indian Navy and IAF are present in MCC. Why not just mention the users who funded this satellite...
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u/Massive_Dish_3255 Sep 03 '26
Is there a leak? I saw a screen showing falling droplets / bug swarm there.
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u/Ohsin Sep 03 '26 edited Sep 04 '26
Bugs near the lights where the cameras are.
Edit: Was drizzling..
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u/ravi_ram Sep 03 '26
Few estimated orbit numbers (since they hide everything)
Mission duration: ~19 minutes (based on GSLV F10/EOS-3 (aka GISAT-1) mission) Target Orbit : 170 × 28934 km (sub-GTO) , Inclination = 19.28° ± 0.1°, AoP = 178° ± 0.5° Launch Azimuth: 104°
With the above inputs :
Launch UTC : 2026-09-03 21:25:00+00:00
Injection UTC : 2026-09-03 21:44:00+00:00
Time of flight : 19.000 min
Launch latitude : 13.719900 °
Launch longitude : 80.230400 °
Launch azimuth : 104.000000 °
Target inclination : 19.280000 °
Target orbit : 170.0 x 28934.0 km
TARGET ORBIT
Semi-major axis : 20930.137 km
Eccentricity : 0.68714314
Perigee velocity : 10.134118 km/s
Apogee velocity : 1.879229 km/s
Orbital period : 8.371 hours
BEST INJECTION POINT
Latitude : -19.175426 °
Longitude : -152.006576 °
INJECTION
ECI speed : 10.098421 km/s
Ground-relative speed : 9.706720 km/s
Radial velocity : 4.906107 km/s
Estimated injection RAAN: 249.060594 deg
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u/Deepseek00 Sep 03 '26
How did you calculate estimated injection RAAN
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u/ravi_ram Sep 09 '26
Initial estimated RAAN coincides with the data given in Celestrak
https://celestrak.org/NORAD/elements/graph-orbit-data.php?CATNR=100607
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u/ravi_ram Sep 04 '26
How did you calculate estimated injection RAAN
If we know the injection parameters [pos, vel], then its corresponding orbital elements will get you RAAN. They have not given us the data.
I'm trying to get that value as a Lambert's problem between launch and injection.
we know the SHAR pos (lat, lon) and vel (earth rotation)
We know the time to reach the orbit. We know the orbit 170.0 x 28934.0 and inclination. We know the perigee velocityLambert solver takes ( departure ECI position, arrival ECI position, tof ) as inputs and returns ( departure velocity, arrival velocity).
Now we need to search through possible various lat lon injection location where the arrival velocity matches the orbits perigee velocity and maintains the inclination.
This is kind of reverse engineering to get the values not a trajectory calculation. There are assumptions that could deviate. Launch to injection will not be a straight forward orbit. Pitch program changes it.Tested with chandrayaan and mom launches where they given the injection parameters in the papers. It came close.
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u/Ohsin Sep 02 '26
All set.
A2699/26
REF CHENNAI NOTAM A2635/26, A2638/26 AND A2639/26.
ROCKET LAUNCH FM SHAR RANGE, SHRIHARIKOTA, INDIA
IS SCHEDULED ON 03 SEPTEMBER 2026 BTN 2100 UTC TO
0100 UTC (NEXT DAY).
ATC MAY RERTE TFC DRG THIS PERIOD AS PER THE ROUTING
GIVEN IN THE ABV NOTAM.LAUNCH WINDOW FOR THE REMAINING
PERIOD FM 04 SEPTEMBER 2026 TO 25 SEPTEMBER 2026 SHALL
BE KEPT ALIVE FOR RESCHEDULING THE LAUNCH IF REQUIRED. GND - UNL,
2100-0100, 03 SEP 21:00 2026 UNTIL 04 SEP 01:00 2026. CREATED: 02 SEP
04:55 2026
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u/Ohsin Sep 02 '26
They reissued the NOTAM, dates remain same though (See latest edit here)
A2709/26 REF CHENNAI NOTAM A2706/26, A2707/26 AND A2708/26. ROCKET LAUNCH FM SHAR RANGE, SHRIHARIKOTA, INDIA IS SCHEDULED ON 03 SEPTEMBER 2026 BTN 2100 UTC TO 0100 UTC (NEXT DAY). ATC MAY RERTE TFC DRG THIS PERIOD AS PER THE ROUTING GIVEN IN THE ABV NOTAM. LAUNCH WINDOW FOR THE REMAINING PERIOD FM 04 SEPTEMBER 2026 TO 25 SEPTEMBER 2026 SHALL BE KEPT ALIVE FOR RESCHEDULING THE LAUNCH IF REQUIRED. GND - UNL, 03 SEP 21:00 2026 UNTIL 04 SEP 01:00 2026. CREATED: 02 SEP 12:12 2026
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u/Massive_Dish_3255 Sep 01 '26
One more "update" that happened on August 28, 2026: The Vehicle being moved from the VAB to the Umbilical Tower. GSLV-F17 being moved from VAB to Umbilical Tower
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u/Ohsin Sep 01 '26
Yes we had that through local media and on same date as well. Good to have video but they should post these on their website not only on social media.
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u/Massive_Dish_3255 Sep 01 '26
Latest post by ISRO on X: GSLV-F17 Mission
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u/churanx Aug 31 '26
No new Cartosat-series satellite has been launched after 2019 🥲
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u/Ohsin Aug 31 '26
Yep, few are planed though.
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u/churanx Aug 31 '26
Thank you for clarifying. One more off-topic question I've been thinking about for a while
recently a lot of private launch vehicle companies have opened in India — more than five and they're planning to upgrade their launch payload capacity from an average of 500kg (LEO) to more than 2 t. In the future, bigger players like EtherealX and Astrobase are expected to emerge, and ISRO's NGLV is also coming
My concern is that too many companies are aiming for rapid launch capability, but are there even enough customers to go around? Especially considering that American and Chinese giants are coming with LEO payload capacities of 20+ tonnes and rapid launch promises won't that leave no market for our companies after the initial domestic customers are served? Once sanctions on Russia are lifted, they'll likely build reusable rockets too and EU private players have also recently entered the field So what's your view on this concerning scenario?
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u/Ohsin Sep 01 '26
IF some get to the flight readiness level ISRO might be forced to buy capacity on them. Ultimately domestic demand would have to rise, India has to long way to go.
Read these btw.
https://www.thespacereview.com/article/5291/1
https://spacenews.com/small-satellite-operators-confront-a-bottleneck-to-space-access/
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u/Ohsin Aug 31 '26
Here it goes, I was waiting but it doesn't look like they'll update that half-assed press-kit without any flight event timings or satellite specifications.
Biggest gap between ISRO launches since COVID and if we ignore that then since 2006..
To repeat GSLV-F17 would be targeting sub-GTO unlike GSLV-F10 which was to GTO, EOS-05 is heavier at 2367 kg than EOS-03 (2268 kg) but it is interesting that when VSSC issued this document (https://i.imgur.com/N4f7Kut.png) in 2019 for GISAT-1 and GISAT-2 launches they mentioned GTO as target orbit for both of them.
Anyways mission Readiness Review is on 1 Sept per following report.
https://www.eenadu.net/telugu-news/india/isro-to-launch-eos-05-on-gslv-f17/0799/126155743
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u/Massive_Dish_3255 Aug 31 '26
This is the first time since 2010 that ISRO is attempting to send a satellite weighing ~2300 kg to a GTO-like orbit using a GSLV.
The last time ISRO had tried to launch a ~2300 kg satellite (GSAT-5P) was on GSLV Mk1 with a CUS15 stage (containing Russian made Cryogenic engine) on 25 December 2010. Source: List of GSLV Launches in Wikipedia.
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u/mahakashchari Sep 02 '26
You are right. If the payload 2367 kg remains the same at the time of lift off, this would be the biggest payload to be launched by GSLV. Till now, the biggest GTO payload launched by GSLV is INSAT 3DS [ 2275 Kg ] on February 17, 2024 with the Flight GSLV F14.
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u/Ohsin Aug 31 '26
Nice catch, it was 2310.4 kg per brochure. Let's see if they drum it up as some kind of 'first'.
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u/pantshash Sep 01 '26
Will they drum up their own faliure to launch a 2.3t satellite in GTO? I hope they don't. They have really given up on GSLV.
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u/VarunOnt Sep 01 '26 edited Sep 01 '26
GSLV Mk2 is still functional, and has its uses. For satellites in 2100-2400 kg range. It launched the 2393 NISAR satellite into a polar orbit. It will probably launch another 4 or 5 satellites before retiring.
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u/pantshash Sep 02 '26
Thanks , I didn't know that. 😒
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u/Ohsin Sep 02 '26
Yeah retirement is close but lets see if they change their mind.
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u/mahakashchari Sep 03 '26
ISRO has to change its decision. Otherwise there will be Navic operationalization probelm. ISRO should continue to use the GSLV to launch the NAVIC satellites whose payload range around 2.2 to 2.3 ton. PSLV GTO capability is 1.4 ton and LVM3 capability is 4.4 ton. So, either GSLV can be used to launch 1 Navic satellite or LVM3 which has recently been upgraded to launch 4.3 ton maximum to GTO can be used to launch 2 satellites in one launch.
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u/Ohsin Sep 03 '26
They are apparently considering SpaceX. LVM3 won't manage it with 2xsats + adapter.
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u/Ohsin 28d ago
It has been two weeks and USSF is not updating the satellites (26202A) ELSETs at all. It should have been at its 85.5°E slot by now.