- Earth-watching satellite
- BILSAT 1
- NORAD 27943
- 2003-042E
- Low Earth orbit
Current orbit
View on live mapOrbit began over the Weddell Sea
Orbit ends over the Weddell Sea
Sunlit since
Enters the Earth’s shadow
In view from you
Nobody watches BILSAT-1 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 BILSAT-1, 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 it is up there for reaches the ground as pictures and measurements, not as a light in the sky.
Timeline
- Launch
Launched, on the day GCAT records. Source
Summary
Over Antarctica LIVE
Where is BILSAT-1?
At 4:55:48 PM UTC BILSAT-1 was over Antarctica (75.7° S, 140.2° W), 691 km up, moving at 7.51 km/s and in sunlight.
What is BILSAT-1?
A satellite that watches the Earth in low Earth orbit, in space since Sep 27, 2003.
Can I see BILSAT-1?
No, not with the naked eye: no brightness has been published for BILSAT-1, and nothing here estimates one; what people use is its pictures and measurements of the Earth.
General
- Operator
- STRC Information Technologies and Electronics Institute
- State
- Turkey, Republic of
- Built by
- Surrey Satellite Technology Ltd
- What it is
- Earth-watching satellite
- Launched
- Mass
- 100 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
- 4:55 PM UTC
- Station time (UTC)
- 4:55 PM UTC
- Latitude / longitude
- 75.7° S, 140.2° W
- Altitude
- 691 km
- Speed
- 7.51 km/s (27,047 km/h)
- Course
- north-west
- Light
- In sunlight until 5:33 PM UTC
- Inclination
- 98.4°
- Orbital period
- 98.2 minutes
- Orbits per day
- 14.67
- This orbit
- 661 to 674 km
- In shadow
- 8 minutes of each orbit
- In view from
- Within 1,930 km of the point below it
- Elements epoch
- Nov 8, 2026, 5:49 AM, 11 hours old
- Source
- Position from Space-Track orbital elements of Nov 8, 2026, 5:49 AM, 11 hours old.
No operator publishes an ephemeris for BILSAT-1, so every position here comes from its orbital elements.
In orbit
- Close approaches
- No close approach to BILSAT-1 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
BILSAT-1 shares its launch, 2003-042, with 6 other bodies the catalogue lists in orbit.
| Body | What it is |
|---|---|
| MOZHAYETS 4 | Satellite |
| RUBIN 4/SL-8 | Satellite |
| NIGERIASAT 1 | Earth-watching satellite |
| UK-DMC | Earth-watching satellite |
| LARETS | Satellite |
| KAISTSAT 4 | Space telescope |
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 |
|---|---|---|---|---|
| BILSAT-1 | 661 to 674 km | 98 minutes | 100 kg | 2003 |
| SMAP | 681 to 683 km | 98 minutes | 944 kg | 2015 |
| Aqua | 685 to 687 km | 98 minutes | about 2.9 t | 2002 |
| Terra | 688 to 691 km | 99 minutes | about 5.2 t | 1999 |
| Sentinel-1A | 693 to 695 km | 99 minutes | about 2.2 t | 2014 |
| Sentinel-1C | 695 to 697 km | 99 minutes | about 2.2 t | 2024 |
Data and API
The current elements from Space-Track as an OMM object, epoch Nov 8, 2026, 5:49 AM, 11 hours old.
{
"OBJECT_NAME": "BILSAT 1",
"OBJECT_ID": "2003-042E",
"EPOCH": "2026-11-08T05:49:41.992032",
"MEAN_MOTION": 14.67137735,
"ECCENTRICITY": 0.00096294,
"INCLINATION": 98.4058,
"RA_OF_ASC_NODE": 126.0403,
"ARG_OF_PERICENTER": 257.9653,
"MEAN_ANOMALY": 102.0471,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 27943,
"ELEMENT_SET_NO": 999,
"REV_AT_EPOCH": 23524,
"BSTAR": 0.000075903219,
"MEAN_MOTION_DOT": 0.00000375,
"MEAN_MOTION_DDOT": 0
}