- Military
- COSMOS 2155
- NORAD 21702
- 1991-064A
- Inclined geosynchronous
Current orbit
View on live mapOrbit began over the Pacific Ocean
Orbit ends over the Pacific Ocean
Sunlit since
Enters the Earth’s shadow
In view from you
Nobody watches Kosmos-2155 go over, but a receiver still asks whether it is above the horizon. Say where you are and this card answers.
Your position is rounded to about a kilometre and sent only to the Orbinauts API, to find the pass.
No brightness has been published for Kosmos-2155, so it is not a naked-eye satellite and no city page carries pass times for it. Nothing here estimates one.
Seeing it
There is nothing to go outside for: it is too faint to see with the naked eye from anywhere on Earth.
Timeline
- Launch
Launched, on the day GCAT records. Source
- Close approach
On Friday, Oct 30 at 10:11 AM UTC, the rocket body of SL-12 (NORAD 13630) was to pass within 4.1 km of Cosmos 2155 (NORAD 21702).
Summary
Over the Pacific Ocean LIVE
Where is Kosmos-2155?
At 5:35:23 PM UTC Kosmos-2155 was over the Pacific Ocean (6.6° N, 176.6° E), 35,794 km up, moving at 3.07 km/s and in sunlight.
What is Kosmos-2155?
A satellite in an inclined geosynchronous orbit, in space since Sep 13, 1991.
Can I see Kosmos-2155?
No, not with the naked eye: no brightness has been published for Kosmos-2155, and nothing here estimates one.
General
- Operator
- Proto-Vozdhusnoy Oborony
- State
- Union of Soviet Socialist Republics
- Built by
- NPO Lavochkin
- Military
- Yes: a defence organisation flies it
- Launched
- Mass
- about 1.3 t
- Operating
- Orbit class
- Inclined geosynchronous
From GCAT, Jonathan McDowell’s general catalogue, licensed CC BY 4.0: the operator, the state, the manufacturer, that a defence organisation flies it, the launch day, the mass, and whether it is operating. The orbit class is read from its current elements.
Latest orbital data
- Position received
- 5:35 PM UTC
- Station time (UTC)
- 5:35 PM UTC
- Latitude / longitude
- 6.6° N, 176.6° E
- Altitude
- 35,794 km
- Speed
- 3.07 km/s (11,066 km/h)
- Course
- south
- Light
- In sunlight until 11:35 AM UTC
- Inclination
- 13°
- Orbital period
- 1,436.3 minutes
- Orbits per day
- 1
- This orbit
- 35,774 to 35,809 km
- In shadow
- 58 minutes of each orbit
- In view from
- Within 7,940 km of the point below it
- Elements epoch
- Nov 8, 2026, 6:59 AM, 10 hours old
- Source
- Position from Space-Track orbital elements of Nov 8, 2026, 6:59 AM, 10 hours old.
No operator publishes an ephemeris for Kosmos-2155, so every position here comes from its orbital elements.
In orbit
- Close approaches
- 1 reported. No close approach to Kosmos-2155 is reported for the next three days.
From Space-Track’s public conjunction messages; the latest report was issued Nov 8, 2026, 1:11 PM, 3 hours old. Only approaches serious enough to be reported publicly are listed: within three days and, for two bodies near the Earth, closer than a kilometre with a chance of a collision above 1 in 10,000, the level at which NASA moves the ISS.
Launched with
Kosmos-2155 shares its launch, 1991-064, with one other body the catalogue lists in orbit.
| Body | What it is |
|---|---|
| SL-12 R/B(2) | Rocket body |
Read from the international designators of the US catalogue: the year and the launch number every piece of one launch shares. A body that has come down is no longer listed.
Data and API
The current elements from Space-Track as an OMM object, epoch Nov 8, 2026, 6:59 AM, 10 hours old.
{
"OBJECT_NAME": "COSMOS 2155",
"OBJECT_ID": "1991-064A",
"EPOCH": "2026-11-08T06:59:50.370144",
"MEAN_MOTION": 1.00256917,
"ECCENTRICITY": 0.00041852,
"INCLINATION": 13.0045,
"RA_OF_ASC_NODE": 338.238,
"ARG_OF_PERICENTER": 253.5187,
"MEAN_ANOMALY": 96.6747,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 21702,
"ELEMENT_SET_NO": 999,
"REV_AT_EPOCH": 12877,
"BSTAR": 0,
"MEAN_MOTION_DOT": -4e-8,
"MEAN_MOTION_DDOT": 0
}