Star · G2V
KMT-2025-BLG-0121L
KMT-2025-BLG-0121L is a main-sequence star of spectral type G2V in the constellation Sagittarius, 20,200 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Sagittarius |
|---|---|
| Distance | 20,200 light-years (6,200 pc) |
| Apparent magnitude | magnitude 21.45 |
| Absolute magnitude | magnitude 7.49 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 0.0938 L☉ |
| Radius | 0.306 R☉ |
| Mass | 0.61 M☉ (estimated) |
| Right ascension (J2000) | 17h 48m 38.0s |
| Declination (J2000) | −23° 59′ 56″ |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.45. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 20 thousand years ago. At that time Homo sapiens was spreading out of Africa; there was no farming yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 359 million years.
The Sun seen from there
From a planet around KMT-2025-BLG-0121L, the Sun would look like a star of magnitude 18.79, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Planets
- KMT-2025-BLG-0121L b 12.6 R⊕
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.