PS-4 Satellite Bus
Data current as of 2026-07-20.
The PS-4 bus accounts for 47 cataloged objects, of which 33 are in orbit and 0 are active. 14 have reentered. Most are built by LPSC. The largest operator on this bus is Indian Space Research Organisation. The first launched in 1994, the most recent in 2020.
33
In orbit
0
Active
47
Total launched
14
Reentered
PS-4 launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged PS-4 satellites.
| Manufacturer | LPSC |
|---|---|
| Purpose | Technology, traffic monitoring |
| Launch mass | 920 kg |
| Dry mass | 920 kg |
| Length | 2.7 m |
| Diameter | 2.1 m |
| Span | 2.7 m |
| Shape | Cyl + Cyl |
| Power | Solar cells, batteries |
| Equipment | 2 AIS-receivers |
| Typical orbit | 97 min period, 98° inclination |
Top operators
Top countries
IN 47
PS-4 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| PSLV R/B PSLV-C50 PS4 | 47257 | 2020-099B | ISRO | Dec 17, 2020 | 284 min, 17.8° | Inactive | ◉ |
| PSLV R/B PSLV-C48 PS4 | 44862 | 2019-089L | ISRO | Dec 11, 2019 | 93 min, 37.0° | Inactive | ◉ |
| PSLV R/B PSLV-C47 PS4 | 44805 | 2019-081B | ISRO | Nov 27, 2019 | 92 min, 97.2° | Inactive | ◉ |
| PSLV R/B PSLV-C46 PS4 | 44234 | 2019-028B | ISRO | May 22, 2019 | 88 min, 37.0° | Reentered | ◉ |
| PSLV R/B PSLV-C43 PS4 | 43739 | 2018-096W | ISRO | Nov 29, 2018 | 87 min, 97.3° | Reentered | ◉ |
| PSLV R/B PSLV-C42 PS4 | 43620 | 2018-071C | ISRO | Sep 16, 2018 | 96 min, 97.5° | Inactive | ◉ |
| PSLV R/B PSLV-C41 PS4 | 43287 | 2018-035B | ISRO | Apr 11, 2018 | 305 min, 19.1° | Inactive | ◉ |
| PSLV R/B PSLV-C40 PS4 | 43129 | 2018-004U | ISRO | Jan 12, 2018 | 87 min, 97.1° | Reentered | ◉ |
| PSLV R/B PSLV-C38 PS4 | 42796 | 2017-036AH | ISRO | Jun 23, 2017 | 87 min, 94.6° | Reentered | ◉ |
| PSLV R/B PSLV-C37 PS4 | 42052 | 2017-008DJ | ISRO | Feb 15, 2017 | 87 min, 97.2° | Reentered | ◉ |
| PSLV R/B PSLV-C36 PS4 | 41878 | 2016-074B | ISRO | Dec 7, 2016 | 101 min, 98.6° | Inactive | ◉ |
| PSLV R/B PSLV-C35 PS4 | 41791 | 2016-059J | ISRO | Sep 26, 2016 | 98 min, 97.8° | Inactive | ◉ |
| PSLV R/B PSLV-C34 PS4 | 41620 | 2016-040X | ISRO | Jun 22, 2016 | 87 min, 97.5° | Reentered | ◉ |
| PSLV R/B PSLV-C33 PS4 | 41470 | 2016-027B | ISRO | Apr 28, 2016 | 341 min, 17.8° | Inactive | ◉ |
| PSLV R/B PSLV-C32 PS4 | 41385 | 2016-015B | ISRO | Mar 10, 2016 | 311 min, 17.7° | Inactive | ◉ |
| PSLV R/B PSLV-C31 PS4 | 41242 | 2016-003B | ISRO | Jan 20, 2016 | 356 min, 19.1° | Inactive | ◉ |
| PSLV R/B PSLV-C29 PS4 | 41172 | 2015-077G | ISRO | Dec 16, 2015 | 89 min, 14.7° | Reentered | ◉ |
| PSLV R/B PSLV-C30 PS4 | 40937 | 2015-052H | ISRO | Sep 28, 2015 | 97 min, 6.0° | Inactive | ◉ |
| PSLV R/B PSLV-C28 PS4 | 40720 | 2015-032F | ISRO | Jul 10, 2015 | 97 min, 98.2° | Inactive | ◉ |
| PSLV R/B PSLV-C27 PS4 | 40548 | 2015-018B | ISRO | Mar 28, 2015 | 320 min, 19.0° | Inactive | ◉ |
| PSLV R/B PSLV-C26 PS4 | 40270 | 2014-061B | ISRO | Oct 15, 2014 | 322 min, 17.7° | Inactive | ◉ |
| PSLV R/B PSLV-C23 PS4 | 40058 | 2014-034F | ISRO | Jun 30, 2014 | 97 min, 98.3° | Inactive | ◉ |
| PSLV R/B PSLV-C24 PS4 | 39636 | 2014-017B | ISRO | Apr 4, 2014 | 323 min, 19.0° | Inactive | ◉ |
| PSLV R/B PSLV-C25 PS4 | 39371 | 2013-060B | ISRO | Nov 5, 2013 | 365 min, 19.2° | Inactive | ◉ |
| PSLV R/B PSLV-C22 PS4 | 39200 | 2013-034B | ISRO | Jul 1, 2013 | 322 min, 17.8° | Inactive | ◉ |
| PSLV R/B PSLV-C20 PS4 | 39093 | 2013-009H | ISRO | Feb 25, 2013 | 99 min, 98.1° | Inactive | ◉ |
| PSLV R/B PSLV-C21 PS4 | 38757 | 2012-047C | ISRO | Sep 9, 2012 | 97 min, 98.3° | Inactive | ◉ |
| PSLV R/B PSLV-C19 PS4 | 38249 | 2012-017B | ISRO | Apr 26, 2012 | 87 min, 97.3° | Reentered | ◉ |
| PSLV R/B PSLV-C18 PS4 | 37842 | 2011-058E | ISRO | Oct 12, 2011 | 101 min, 19.8° | Inactive | ◉ |
| PSLV R/B PSLV-C17 PS4 | 37747 | 2011-034B | ISRO | Jul 15, 2011 | 330 min, 17.9° | Inactive | ◉ |
| PSLV R/B PSLV-C16 PS4 | 37390 | 2011-015D | ISRO | Apr 20, 2011 | 101 min, 98.5° | Inactive | ◉ |
| PSLV R/B PSLV-C15 PS4 | 36800 | 2010-035F | ISRO | Jul 12, 2010 | 95 min, 98.0° | Inactive | ◉ |
| RUBIN 9.1 & RUBIN 9.2 PSLV-C14 PS4 | 35936 | 2009-051F | ISRO | Sep 23, 2009 | 100 min, 98.3° | Inactive | ◉ |
| PSLV R/B PSLV-C12 PS4 | 34809 | 2009-019C | ISRO | Apr 20, 2009 | 88 min, 41.1° | Reentered | ◉ |
| PSLV R/B PSLV-C11 PS4 | 33406 | 2008-052B | ISRO | Oct 22, 2008 | 332 min, 17.8° | Inactive | ◉ |
| RUBIN-8 & PSLV R/B PSLV-C10 PS4 | 32792 | 2008-021K | ISRO | Apr 28, 2008 | 97 min, 98.1° | Inactive | ◉ |
| PSLV R/B PSLV-C10 PS4 | 32477 | 2008-002B | ISRO | Jan 21, 2008 | 88 min, 41.0° | Reentered | ◉ |
| PSLV R/B [AAM] PSLV-C8 PS4 | 31136 | 2007-013B | ISRO | Apr 23, 2007 | 88 min, 2.5° | Reentered | ◉ |
| PSLV R/B PSLV-C7 PS4 | 29713 | 2007-001E | ISRO | Jan 10, 2007 | 96 min, 98.0° | Inactive | ◉ |
| PSLV R/B PSLV-C6 PS4 | 28651 | 2005-017C | ISRO | May 5, 2005 | 97 min, 97.9° | Inactive | ◉ |
| PSLV R/B PSLV-C5 PS4 | 28050 | 2003-046B | ISRO | Oct 17, 2003 | 102 min, 99.1° | Inactive | ◉ |
| PSLV R/B PSLV-C4 PS4 | 27526 | 2002-043B | ISRO | Sep 12, 2002 | 88 min, 17.7° | Reentered | ◉ |
| PSLV R/B PSLV-C3-PS4 | 26960 | 2001-049D | ISRO | Oct 22, 2001 | 88 min, 97.6° | Reentered | ◉ |
| PSLV R/B PSLV-D3 PS4 | 25759 | 1999-029D | ISRO | May 26, 1999 | 99 min, 98.6° | Inactive | ◉ |
| PSLV 1C R/B PSLV-D3 PS4 | 24972 | 1997-057B | ISRO | Sep 29, 1997 | 87 min, 98.6° | Reentered | ◉ |
| PSLV R/B PSLV-D3 PS4 | 23828 | 1996-017B | ISRO | Mar 21, 1996 | 101 min, 99.0° | Inactive | ◉ |
| IRS-P2 R/B PSLV-D2 PS4 | 23324 | 1994-068B | ISRO | Oct 15, 1994 | 102 min, 98.8° | Inactive | ◉ |
Frequently asked questions
How many PS-4 satellites are there?
The catalog lists 47 objects built on the PS-4 bus. 33 are in orbit and 14 have reentered.
How many PS-4 satellites are in orbit?
33 PS-4 objects are currently in orbit, of which 0 carry an active status.
Who builds the PS-4 bus?
The PS-4 bus is most commonly built by LPSC.
When did the first PS-4 satellite launch?
The first cataloged PS-4 satellite launched in 1994, and the most recent in 2020.