Star · ?
GJ 3398
GJ 3398 is a main-sequence star of spectral type ? in the constellation Monoceros, 57.6 light-years from the Sun.
| Constellation | Monoceros |
|---|---|
| Distance | 57.6 light-years (17.7 pc) |
| Apparent magnitude | magnitude 14.22 |
| Absolute magnitude | magnitude 12.99 |
| Spectral type | ? |
| Surface temperature | 3,580 K |
| Luminosity | 0.00275 L☉ |
| Radius | 0.136 R☉ |
| Mass | 0.146 M☉ (estimated) |
| Right ascension (J2000) | 6h 36m 06.8s |
| Declination (J2000) | +11° 36′ 57″ |
| Space velocity (relative to the Sun) | 73.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.22. Visible from the whole Northern Hemisphere and south to latitude 78° S. North of latitude 78° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1968. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around GJ 3398, the Sun would look like a star of magnitude 6.06, in the direction where our sky has the constellation Scutum. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Alzirr 3.72 light-years
- Gl 230 6.64 light-years
- WISEA J061557.21+152626.1 7.63 light-years
- 74 Ori 8.13 light-years
- WISE J061437.73+095135.0 9.02 light-years
- CWISE J060149.45+141955.2 9.43 light-years
- Gl 231.1B 9.74 light-years
- GJ 3410 9.77 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.