Showing default

IRS P4 (OCEANSAT 1), 25758

Orbit data source: Space-Track

IRS P4 (OCEANSAT 1), 25758 is a payload satellite owned by ISRO (IN) in SSO that was launched on Wed, 26 May 1999 UTC via a PSLV launch vehicle from the Sirharikota (SRI). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/25758?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/25758?theme=dark&initialShowStats=false

Optional secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

25758, 1999-029C

Orbit

SSO

Country

IN / IND

Related business

Indian Space Research Organization (IN)

Manufacturer

ISAC/HAL

Mission

Non-operational Civil Imaging

Bus & Motor

IRS, AOCS

Mass

1,036 kg wet, 952 kg dry

Launch date (UTC)

1999-05-26 (27 years ago)

Launch vehicle

PSLV

Launch site

Sirharikota (SRI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 5.8 m

Radar Cross Section

12.382 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 IRS P4 (OCEANSAT 1)
1 25758U 99029C   26271.92742566  .00000209  00000-0  58035-4 0  9991
2 25758  97.9836 240.2189 0002876 161.1186 199.0119 14.55340916449201

Epoch: 2026-09-28T22:15Z

TLE epoch observation values (Epoch: 2026-09-28T22:15:29.577Z)

Latitude

-0.00003°

Longitude

-101.3541°

Altitude

713.171 km

Speed

7.498 km/s

True Right ascension

16h 00m 52s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

18:11:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

707.373 km

Perigee altitude

703.298 km

Semi-major axis

7,083.472 km

Eccentricity

0.00029

Inclination

97.9836°

RAAN

240.2189°

Arg. of periapsis

161.1186°

True anomaly

199.00117°

Mean anomaly

199.0119°

Eccentric anomaly

199.00653°

Mean motion

3.64061 °/min

Orbital period

98.88 mins

BSTAR

0.000058035

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #29 in the year 1999 (1999-05-26 UTC)

KITSAT 3, 25756

TUBSAT, 25757

PSLV R/B, 25759

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

IRS P4 (OCEANSAT 1) Visibility forecast

Loading observer location...
Set Observer location

Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
7 mins	2026-09-30 11:08:47.064Z	1.375° NNE	2026-09-30 11:11:47.064Z	286.019° WNW	64.191°	2026-09-30 11:15:47.064Z	206.623° SW
8 mins	2026-09-30 22:13:47.064Z	179.069° S	2026-09-30 22:17:47.064Z	278.48° WNW	63.677°	2026-09-30 22:21:47.064Z	340.168° N

Items per page:

1–2 of 2 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

Check out IRS P4 (OCEANSAT 1), 25758 on other resources

View IRS P4 (OCEANSAT 1), 25758 on NASA - NSSDCA Website

View IRS P4 (OCEANSAT 1), 25758 on Heavens-Above

View IRS P4 (OCEANSAT 1), 25758 on Keep Track

View IRS P4 (OCEANSAT 1), 25758 on Celestrak

View IRS P4 (OCEANSAT 1), 25758 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

IRS P4 (OCEANSAT 1), 25758

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-09-28T22:15:29.577Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #29 in the year 1999 (1999-05-26 UTC)

IRS P4 (OCEANSAT 1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRS P4 (OCEANSAT 1), 25758 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago