The Indian Space Research Organisation (ISRO) is the space agency of the Government of India headquartered in the city of Bangalore. Its vision is to "harness space technology for national development while pursuing space science research and planetary exploration."

バンガロールに本部を置くインド政府の宇宙機関 (ISRO)。「宇宙科学研究と惑星探査を追求しつつ、宇宙技術を国の発展に活用する」ことをビジョンとする。

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Indian Space Research Organization

The Augmented Satellite Launch Vehicle or Advanced Satellite Launch Vehicle, also known as ASLV, was a Small-lift launch vehicle five-stage solid-fuel rocket developed by the Indian Space Research Organisation (ISRO) to place 150 kg satellites into LEO. ISRO did not have sufficient funds for both the Polar Satellite Launch Vehicle programme and the ASLV programme at the same time and the ASLV programme was terminated after the initial developmental flights.

増強型衛星打ち上げ機 (ASLV) は、150 kg の衛星を低軌道へ投入するためインド宇宙研究機関 (ISRO) が開発した 5 段式固体燃料の小型打ち上げ機。ISRO には PSLV 計画と ASLV 計画を同時に進める資金がなく、ASLV 計画は初期の開発飛行の後に打ち切られた。

ASLV

Gaganyaan Abort Test Booster

GSLVGeosynchronous Satellite Launch Vehicle abbreviated as GSLV, is an expendable launch system operated by the Indian Space Research Organisation (ISRO).

静止衛星打ち上げ機 (GSLV) は、インド宇宙研究機関 (ISRO) が運用する使い捨て打ち上げシステム。

GSLV

Geosynchronous Satellite Launch Vehicle Mark II (GSLV Mk II) is the largest launch vehicle developed by India, which is currently in operation. This fourth generation launch vehicle is a three stage vehicle with four liquid strap-ons. The indigenously developed cryogenic Upper Stage (CUS), which is flight proven, forms the third stage of GSLV Mk II. From January 2014, the vehicle has achieved four consecutive successes.

静止衛星打ち上げ機マーク II (GSLV Mk II) は、現在運用中のものとしてインドが開発した最大の打ち上げ機。第 4 世代にあたる 3 段式で、液体燃料の補助ブースター 4 本を備える。飛行実証済みの国産極低温上段 (CUS) が第 3 段を構成する。2014 年 1 月以降、4 回連続で成功している。

GSLV Mk. II

The Launch Vehicle Mark-3 (LVM-3), previously called Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III), is a three-stage medium-lift launch vehicle developed by the Indian Space Research Organisation (ISRO). It is designed to launch satellites into geostationary orbit, and is intended as a launch vehicle for crewed missions under the Indian Human Spaceflight Programme.

打ち上げ機マーク 3 (LVM-3、旧称 静止衛星打ち上げ機マーク III、GSLV Mk III) は、インド宇宙研究機関 (ISRO) が開発した 3 段式の中型打ち上げ機。衛星を静止軌道へ打ち上げるよう設計され、インド有人宇宙飛行計画の有人ミッション用打ち上げ機としても想定されている。

Launch Vehicle Mark-3 (GSLV Mk III)

The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellites into sun-synchronous orbits, a service that was, until the advent of the PSLV in 1993, commercially available only from Russia. PSLV can also launch small size satellites into Geostationary Transfer Orbit (GTO).

極軌道衛星打ち上げ機 (PSLV) は、インド宇宙研究機関 (ISRO) が設計・運用する使い捨ての中型打ち上げ機。インドのリモートセンシング衛星 (IRS) を太陽同期軌道へ打ち上げられるよう開発された。このサービスは 1993 年に PSLV が登場するまでロシアからしか商業的に得られなかった。小型衛星を静止トランスファ軌道 (GTO) へ打ち上げることもできる。

PSLV

PSLV-XL is the upgraded version of Polar Satellite Launch Vehicle in its standard configuration boosted by more powerful, stretched strap-on boosters with 12 tonne propellant load. Weighing 320t at lift-off, the vehicle uses larger strap-on motors (PSOM-XL or S12) to achieve higher payload capability. On 29 December 2005, ISRO successfully tested the improved version of strap-on booster for the PSLV. The first use of PSLV-XL was the launch of Chandrayaan-1 by PSLV C11. The payload capability for this variant is 1,800 kg to SSO.

PSLV-XL は標準構成の PSLV を、推進剤 12 t を積むより強力で延長された補助ブースターで強化した改良型。離昇時の重量は 320 t で、大型の補助モーター (PSOM-XL または S12) により高いペイロード能力を実現する。ISRO は 2005 年 12 月 29 日に改良型補助ブースターの試験に成功し、PSLV-XL の初使用は PSLV C11 によるチャンドラヤーン 1 号の打ち上げだった。この型の太陽同期軌道へのペイロード能力は 1,800 kg。

PSLV XL

The PSLV-CA, CA meaning "Core Alone", model premiered on 23 April 2007. The CA model does not include the six strap-on boosters used by the PSLV standard variant. The fourth stage of the CA variant has 400 kg less propellant when compared to its standard version. It currently has capability to launch 1,100 kg to a 622 km Sun synchronous orbit.

PSLV-CA (CA は「コアのみ」の意) は 2007 年 4 月 23 日に初登場した型。標準型 PSLV の補助ブースター 6 本を持たず、第 4 段の推進剤は標準型より 400 kg 少ない。現在、高度 622 km の太陽同期軌道へ 1,100 kg を打ち上げる能力を持つ。

PSLV-CA

PSLV-DL variant has only two strapons boosters with 12 tonne propellant load on them. PSLV-C44 on 24 January 2019 was the first flight to use PSLV-DL variant of Polar Satellite Launch Vehicle.

PSLV-DL 型は推進剤 12 t を積む補助ブースターを 2 本だけ持つ。2019 年 1 月 24 日の PSLV-C44 が PSLV-DL 型の初飛行だった。

PSLV-DL

PSLV-QL variant has 4 strapons and all are ground-lit starpon variant with a combined propellant of 48 tonnes.

PSLV-QL 型は補助ブースター 4 本を持ち、すべて地上点火型で、推進剤は合計 48 t。

PSLV-QL

The Satellite Launch Vehicle or SLV is a Small-lift launch vehicle, was a project started in the early 1970s by the Indian Space Research Organisation to develop the technology needed to launch satellites. SLV was intended to reach a height of 400 kilometres (250 mi) and carry a payload of 40 kg (88 lb).

衛星打ち上げ機 (SLV) は、衛星打ち上げに必要な技術を開発するためインド宇宙研究機関が 1970 年代初頭に始めた小型打ち上げ機の計画。高度 400 km に到達し、40 kg のペイロードを運ぶことを目指した。

SLV-3

Small Satellite Launch Vehicle (or SSLV) is a launch vehicle being developed by the Indian Space Research Organisation (ISRO) with payload capacity of 500 kg to Low Earth orbit or 300 kg to Sun synchronous orbit for launching small satellites, with the capability to support multiple orbital drop-offs.

インド宇宙研究機関 (ISRO) が開発中の小型衛星打ち上げ機。低軌道へ 500 kg、太陽同期軌道へ 300 kg のペイロード能力を持ち、複数軌道への投入にも対応する。

SSLV

GSLV-F17/EOS-05 MISSION

Launch success with satellite in communication and solar arrays deployed.

Updated T-0.

NET September 3 per new NOTAMs, TBC.

NET 1st week of September.

NET Q3.

NET July.

NET June 10.

NET early June.

Delayed to end of May.

Rescheduled for NET May 21, TBC.

Reverted back to NET March with cancellation of NOTAMs.

NET March 6 per new NOTAMs.

NET February 20 per NOTAMs.

NET Q1 2026.

Targeting March 2024

Launch Preview: Array of international launches planned this week

YouTube

GISAT-1A (GEO Imaging Satellite) is an Indian earth observing satellite operating from geostationary orbit to facilitate continuous observation of Indian sub-continent, quick monitoring of natural hazards and disaster.

EOS-05/GISAT-1A will replace EOS-03/GISAT-1 lost in launch failure in 2021.

GISAT-1A (EOS-05)

GSLV Mk. II | GISAT-1A (EOS-05)

Launch failure.

Liftoff.

Tweaked T-0.

Go for launch.

NET January 12.

NET January 11.

Delayed to NET January 10.

Delayed to NET January 5.

Delayed to December 31.

Updated launch vehicle configuration.

NET December 25 per NOTAMs.

Added launch (see also https://www.reddit.com/r/ISRO/s/boz7aJUgCJ for a summary).

Rocket Report: Ariane 64 to debut soon; India has a Falcon 9 clone too?

European Capsule Demonstrator Survives Launch Failure

Indian rocket hits snag during launch

India’s workhorse PSLV needs to solve third stage issue following second consecutive failure

India’s PSLV suffers second consecutive launch failure, 16 satellites lost

India’s PSLV launch fails during ascent, 16 satellites lost

Launch Previews: SpaceX and ISRO to launch rideshare missions into SSO

YouTube (Short)

EOS-N1 and others

PSLV-DL | EOS-N1 and others

Satellite in contact.

Spacecraft separation.

Adding T-0 and setting GO

Delayed to NET December 24.

Delayed to December 21.

Rescheduled for NET December 20 per new NOTAMs.

Added tentative launch window.

NET December 15.

NET early December.

NET Q4 2025.

NET August.

NET May.

NET Q2.

NET March.

Fixed rocket variant.

Added launch.

AST SpaceMobile deploys record low orbit cellular array on BlueBird 6

AST BlueBird 6 enters orbit as record low Earth orbit cellular array

Indian rocket launches AST SpaceMobile’s next-gen BlueBird-6 satellite

BlueBird 6 satellite set for December launch to expand direct mobile connectivity in space

India eyes record year for space with 10 planned launches

AST SpaceMobile secures multi-launch agreements with Blue Origin, ISRO and SpaceX

Webcast: AST SpaceMobile BlueBird 6 Mission Live Launch

AST SpaceMobile’s Block 2 BlueBird satellites are designed to deliver up to 10 times the bandwidth capacity of the BlueBird Block 1 satellites, required to achieve 24/7 continuous cellular broadband service coverage in the United States, with beams designed to support a capacity of up to 40 MHz, enabling peak data transmission speeds up to 120 Mbps, supporting voice, full data and video applications. The Block 2 BlueBirds, featuring as large as 2400 square foot communications arrays, will be the largest satellites ever commercially deployed in Low Earth orbit once launched.

This launch will feature a single satellite.

BlueBird Block 2

LVM-3 | BlueBird Block 2

Launch success.

Payload deployed

Added T-0.

GO for launch.

Reverting to NET November 2.

NET November 5.

Delayed to NET October 31.

NET October 24.

NET October 21.

NET October 16.

NET October 2025.

Communications Satellite for the Indian Navy, replacing GSAT-7 for secure real-time links between Indian warships, submarines, aircraft, and shore-based command centers across the Indian Ocean.

CMS-03 (GSAT-7R)

Launch Vehicle Mark-3 (GSLV Mk III) | CMS-03 (GSAT-7R)

RISAT-2A

PSLV | RISAT-2A

NET Q2 2025.

NET Q1.

NET December.

NET late 2024.

NET Q3 2024.

Targeting early 2024

TDS-01

PSLV | TDS-01

NET September.

Added launch (see 04:16 mark of the video).

This is a replacement satellite for the Indian Regional Navigation Satellite System. The constellation will provide India with an alternative to GPS and will be used for military and civilian use. Located at a geosynchronous orbit, the system will be operated by the Indian government.

IRNSS-1L (NVS-03)

GSLV Mk. II | IRNSS-1L (NVS-03)

Added launch (see also https://x.com/Open_Cosmos/status/2065063321993162899).

ConnectedCosmos

PSLV | ConnectedCosmos

NET late 2026, after Gaganyaan G1 test flight.

Pushed to NET early 2024.

Added launch

TV-D2

Gaganyaan Abort Test Booster | TV-D2

略称	ISRO
種別	政府機関
国	India
設立年	1969年
代表者	Chairman: V. Narayanan

インド宇宙研究機関

Indian Space Research Organization

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打ち上げ予定・履歴

打ち上げ予定

打ち上げ履歴