Star · K9V
GJ 2003
GJ 2003 is a main-sequence star of spectral type K9V in the constellation Cetus, 74.5 light-years from the Sun.
| Other names | HIP 1608 |
|---|---|
| Constellation | Cetus |
| Distance | 74.5 light-years (22.8 pc) |
| Apparent magnitude | magnitude 11.67 |
| Absolute magnitude | magnitude 9.88 |
| Spectral type | K9V |
| Surface temperature | 3,810 K |
| Luminosity | 0.0346 L☉ |
| Radius | 0.427 R☉ |
| Mass | 0.431 M☉ (estimated) |
| Right ascension (J2000) | 0h 20m 08.3s |
| Declination (J2000) | −17° 03′ 41″ |
| Space velocity (relative to the Sun) | 34.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.67. Visible from the whole Southern Hemisphere and north to latitude 73° N. South of latitude 73° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1952. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around GJ 2003, the Sun would look like a star of magnitude 6.62, in the direction where our sky has the constellation Coma Berenices. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J00332386-1521309 4.74 light-years
- 9 Cet 7.87 light-years
- Gl 911 10.2 light-years
- 2MASS J00132229-1143006 10.4 light-years
- HIP 117697 11.1 light-years
- DENIS J2354599-185221 11.7 light-years
- SIPS J0050-1538 11.8 light-years
- HD 1461 12.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.