Showing default

COSMOS 1842, 17911

Orbit data source: Space-Track

COSMOS 1842, 17911 is a payload satellite owned by GRU (CIS) in LEO that was launched on Mon, 27 Apr 1987 UTC via a TSIKLON-3 launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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/17911?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/17911?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

17911, 1987-038A

Orbit

LEO

Country

CIS

Related business

Main Directorate of the General Staff of the Armed Forces of the Russian Federation (GRU_ (RU)

Manufacturer

Yuzhnoe

Mission

Defense Sigint

Bus & Motor

TSELINA-D, Unknown motor

Mass

1,750 kg wet, 1,750 kg dry

Launch date (UTC)

1987-04-27 (39 years ago)

Launch vehicle

TSIKLON-3

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cone + 2 Pan, 6.5 m

Radar Cross Section

2.839 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 COSMOS 1842
1 17911U 87038A   26171.38913377  .00027351  00000-0  36952-3 0  9999
2 17911  82.5034 171.5139 0001518 249.5785 110.5307 15.57605520141273

Epoch: 2026-06-20T09:20Z

TLE epoch observation values (Epoch: 2026-06-20T09:20:21.157Z)

Latitude

-0.00006°

Longitude

122.82128°

Altitude

398.089 km

Speed

7.671 km/s

True Right ascension

11h 26m 03s

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

23:09:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

392.537 km

Perigee altitude

390.481 km

Semi-major axis

6,769.646 km

Eccentricity

0.00015

Inclination

82.5034°

RAAN

171.5139°

Arg. of periapsis

249.5785°

True anomaly

110.54699°

Mean anomaly

110.5307°

Eccentric anomaly

110.53884°

Mean motion

3.89668 °/min

Orbital period

92.39 mins

BSTAR

0.00036952

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #38 in the year 1987 (1987-04-27 UTC)

COSMOS 1842 DEB, 41190 (Decayed)

SL-14 R/B, 17912

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

COSMOS 1842 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.
4 mins	2026-06-23 00:41:47.152Z	200.321° SSW	2026-06-23 00:43:47.152Z	316.236° NNW	41.177°	2026-06-23 00:45:47.152Z	359.365° N
4 mins	2026-06-23 11:54:47.152Z	332.692° NNW	2026-06-23 11:56:47.152Z	248.125° W	36.449°	2026-06-23 11:58:47.152Z	193.894° SSW

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 COSMOS 1842, 17911 on other resources

View COSMOS 1842, 17911 on NASA - NSSDCA Website

View COSMOS 1842, 17911 on Heavens-Above

View COSMOS 1842, 17911 on Keep Track

View COSMOS 1842, 17911 on Celestrak

View COSMOS 1842, 17911 on Gunter's Space Page

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

COSMOS 1842, 17911

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:20:21.157Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #38 in the year 1987 (1987-04-27 UTC)

COSMOS 1842 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 1842, 17911 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago