- Communications satellite
- TMSAT
- NORAD 25396
- 1998-043C
- Low Earth orbit
Current orbit
View on live mapOrbit began over the Arctic Ocean
Orbit ends over the Arctic Ocean
In view from you
Nobody watches Thai-OSCAR-31 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 Thai-OSCAR-31, 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 the Atlantic Ocean LIVE
Where is Thai-OSCAR-31?
At 5:35:51 PM UTC Thai-OSCAR-31 was over the Atlantic Ocean (42.7° S, 4° E), 824 km up, moving at 7.44 km/s and in sunlight.
What is Thai-OSCAR-31?
A communications satellite in low Earth orbit, in space since Jul 10, 1998.
Can I see Thai-OSCAR-31?
No, not with the naked eye: no brightness has been published for Thai-OSCAR-31, and nothing here estimates one; the dishes and receivers on the ground use its signals instead.
General
- Operator
- Thai Microsatellite
- State
- Thai Kingdom
- Built by
- Surrey Satellite Technology Ltd
- What it is
- Communications satellite
- Launched
- Mass
- 50 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
- 5:35 PM UTC
- Station time (UTC)
- 5:35 PM UTC
- Latitude / longitude
- 42.7° S, 4° E
- Altitude
- 824 km
- Speed
- 7.44 km/s (26,780 km/h)
- Course
- north
- Light
- In sunlight
- Inclination
- 99°
- Orbital period
- 101 minutes
- Orbits per day
- 14.26
- This orbit
- 800 to 806 km
- In shadow
- None of this orbit
- In view from
- Within 2,150 km of the point below it
- Elements epoch
- Nov 8, 2026, 6:00 AM, 11 hours old
- Source
- Position from Space-Track orbital elements of Nov 8, 2026, 6:00 AM, 11 hours old.
No operator publishes an ephemeris for Thai-OSCAR-31, so every position here comes from its orbital elements.
In orbit
- Close approaches
- No close approach to Thai-OSCAR-31 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
Thai-OSCAR-31 shares its launch, 1998-043, with 10 other bodies the catalogue lists in orbit.
| Body | What it is |
|---|---|
| RESURS O1-N4 | Earth-watching satellite |
| FASAT B | Earth-watching satellite |
| TECHSAT 1B | Communications satellite |
| WESTPAC | Earth-watching satellite |
| SAFIR 2 | Communications satellite |
| SL-16 R/B | Rocket body |
| SL-16 DEB | Debris |
| SL-16 DEB | Debris |
| SL-16 DEB | Debris |
| SL-16 DEB | Debris |
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 |
|---|---|---|---|---|
| Thai-OSCAR-31 | 800 to 806 km | 101 minutes | 50 kg | 1998 |
| 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, 6:00 AM, 11 hours old.
{
"OBJECT_NAME": "TMSAT",
"OBJECT_ID": "1998-043C",
"EPOCH": "2026-11-08T06:00:38.460960",
"MEAN_MOTION": 14.25799842,
"ECCENTRICITY": 0.00036341,
"INCLINATION": 98.998,
"RA_OF_ASC_NODE": 307.0543,
"ARG_OF_PERICENTER": 103.0089,
"MEAN_ANOMALY": 257.1496,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 25396,
"ELEMENT_SET_NO": 999,
"REV_AT_EPOCH": 47252,
"BSTAR": 0.000083332905,
"MEAN_MOTION_DOT": 0.00000151,
"MEAN_MOTION_DDOT": 0
}