- Communications satellite
- OSCAR 15 (UOSAT 4)
- NORAD 20438
- 1990-005C
- Low Earth orbit
Current orbit
View on live mapOrbit began over the Southern Ocean
Orbit ends over Antarctica
In the Earth’s shadow since
Back in sunlight
In view from you
Nobody watches UoSAT-OSCAR-15 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 UoSAT-OSCAR-15, 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 for the naked eye. What reaches you from it reaches a dish or an antenna, not an eye.
Timeline
- Launch
Launched, on the day GCAT records. Source
Summary
Over Somalia LIVE
Where is UoSAT-OSCAR-15?
At 6:21:37 PM UTC UoSAT-OSCAR-15 was over Somalia (4.2° N, 47° E), 787 km up, moving at 7.46 km/s and in the Earth’s shadow.
What is UoSAT-OSCAR-15?
A communications satellite in low Earth orbit, in space since Jan 22, 1990.
Can I see UoSAT-OSCAR-15?
No, not with the naked eye: no brightness has been published for UoSAT-OSCAR-15, and nothing here estimates one; the dishes and receivers on the ground use its signals instead.
General
- Operator
- Surrey Satellite Technology Ltd
- State
- United Kingdom of Great Britain and Northern Ireland
- Built by
- Surrey Satellite Technology Ltd
- What it is
- Communications satellite
- Launched
- Mass
- 47 kg
- Operating
- Orbit class
- Low Earth orbit
From GCAT, Jonathan McDowell’s general catalogue, licensed CC BY 4.0: the operator, the state, the manufacturer, what it is for, the launch day, the mass, and whether it is operating. The orbit class is read from its current elements.
Latest orbital data
- Position received
- 6:21 PM UTC
- Station time (UTC)
- 6:21 PM UTC
- Latitude / longitude
- 4.2° N, 47° E
- Altitude
- 787 km
- Speed
- 7.46 km/s (26,863 km/h)
- Course
- north
- Light
- In the Earth’s shadow until 6:40 PM UTC
- Inclination
- 98.8°
- Orbital period
- 100.6 minutes
- Orbits per day
- 14.32
- This orbit
- 777 to 789 km
- In shadow
- 32 minutes of each orbit
- In view from
- Within 2,090 km of the point below it
- Elements epoch
- Nov 8, 2026, 3:22 AM, 14 hours old
- Source
- Position from Space-Track orbital elements of Nov 8, 2026, 3:22 AM, 14 hours old.
No operator publishes an ephemeris for UoSAT-OSCAR-15, so every position here comes from its orbital elements.
In orbit
- Close approaches
- No close approach to UoSAT-OSCAR-15 has been reported publicly in the past thirty 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
UoSAT-OSCAR-15 shares its launch, 1990-005, with 7 other bodies the catalogue lists in orbit.
| Body | What it is |
|---|---|
| SPOT 2 | Earth-watching satellite |
| OSCAR 14 (UOSAT 3) | Communications satellite |
| OSCAR 16 (PACSAT) | Communications satellite |
| OSCAR 17 (DOVE) | Communications satellite |
| OSCAR 18 (WEBERSAT) | Communications satellite |
| OSCAR 19 (LUSAT) | Communications satellite |
| ARIANE 40 R/B | 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.
Beside the others
| Satellite | Typical altitude | Orbital period | Mass | In space since |
|---|---|---|---|---|
| UoSAT-OSCAR-15 | 777 to 789 km | 101 minutes | 47 kg | 1990 |
| BlueWalker 3 | 443 to 453 km | 94 minutes | about 1.5 t | 2022 |
| Hispasat 30W-6 | 35,786 to 35,786 km | 1,436 minutes | about 6.1 t | 2018 |
| Amazonas Nexus | 35,786 to 35,786 km | 1,436 minutes | about 4.1 t | 2023 |
| ARSAT-1 | 35,786 to 35,786 km | 1,436 minutes | about 3 t | 2014 |
| Astra 1N | 35,786 to 35,786 km | 1,436 minutes | about 5.3 t | 2011 |
Data and API
The current elements from Space-Track as an OMM object, epoch Nov 8, 2026, 3:22 AM, 14 hours old.
{
"OBJECT_NAME": "OSCAR 15 (UOSAT 4)",
"OBJECT_ID": "1990-005C",
"EPOCH": "2026-11-08T03:22:26.925888",
"MEAN_MOTION": 14.317429,
"ECCENTRICITY": 0.00087374,
"INCLINATION": 98.7661,
"RA_OF_ASC_NODE": 10.3331,
"ARG_OF_PERICENTER": 291.789,
"MEAN_ANOMALY": 95.7904,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 20438,
"ELEMENT_SET_NO": 999,
"REV_AT_EPOCH": 92082,
"BSTAR": 0.000044040665,
"MEAN_MOTION_DOT": 7.2e-7,
"MEAN_MOTION_DDOT": 0
}