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🇮🇳 [ISRO] EOS-05 (GISAT-1A) Launch Thread [GSLV Mk II]
Post Reply RetroFed Forum Forum Index » Spaceflight
AuthorMessage
threelonmusketeers sh.itjust.works threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
(edited) Quote

Mission info

Scheduled for (UTC) 2026-09-03, 21:25
Scheduled for (local) 2025-09-04, 02:55 (IST)
Launch site Second Launch Pad, Satish Dhawan Space Centre, India
Launch Vehicle GSLV Mark II
Payloads EOS-05 (GISAT-1A)
Payload mass 2,367 kg
Target Orbit Geostationary Transfer Orbit

GSLV Mark II consists of:

  • Four L40 Hs boosters: (N2O4 / UDMH)
  • Stage 1: HTPB (Hydroxyl-terminated polybutadiene)
  • Stage 2: (N2O4 / UDMH)
  • Stage 3: (LOX / LH2)

Webcasts

Stream Link
ISRO https://www.youtube.com/watch?v=Q9OdYc3KpEw
Space Affairs https://www.youtube.com/watch?v=44GxFOJWl3w
The Launch Pad https://www.youtube.com/watch?v=hbcyVX_ci6g
International Rocket Launches https://www.youtube.com/watch?v=wChAVB8Wgbw

Stats

Sourced from NextSpaceflight:

☑️ 1st GSLV mission of 2026, 19th overall

☑️ 2nd ISRO mission this year, 103rd overall

Mission details

EOS-05 (GISAT-1A)

GEO Imaging Satellite, or GISAT, is a planned Indian geo-imaging satellite intended to be able to provide images quickly during disasters. EOS-05/GISAT-1A will replace EOS-03/GISAT-1 lost in launch failure in 2021.
5   Original
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#2 · Quote Reply

LIftoff!
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#3 · Quote Reply

Stage 1 shutdown, stage separation, and stage 2 ignition.
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#4 · Quote Reply

Fairing separation confirmed.
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#5 · Quote Reply

Stage 2 shutdown, stage separation, and stage 3 ignition confirmed.
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#6 · Quote Reply

Stage 3 shutdown confirmed.
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#7 · Quote Reply

EOS-05 separation confirmed!

Mission success.
1
threelonmusketeers Moderator threelonmusketeers@sh.itjust.works
Joined: 2023-06-10
#8 · Quote Reply

Orbital parameters from Jonathan McDowell: https://bsky.app/profile/planet4589.bsky.social/post/3mupvwwwddk2c

EOS-05 (GISAT-1A) and the GSLV CUS upper stage cataloged by USSF in a 154 x 30963 km x 19.3 deg transfer orbit, confirming successful launch by India
1
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