Star · ?
GJ 3577A
GJ 3577A is a main-sequence star of spectral type ? in the constellation Ursa Major, 88.8 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 88.8 light-years (27.2 pc) |
| Apparent magnitude | magnitude 13.89 |
| Absolute magnitude | magnitude 11.72 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00795 L☉ |
| Radius | 0.223 R☉ |
| Mass | 0.232 M☉ (estimated) |
| Right ascension (J2000) | 9h 59m 19.7s |
| Declination (J2000) | +43° 50′ 30″ |
| Space velocity (relative to the Sun) | 31.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.89. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1937. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around GJ 3577A, the Sun would look like a star of magnitude 7.00, in the direction where our sky has the constellation Grus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 378.1 3.91 light-years
- 19 LMi 7.14 light-years
- HIP 50226 8.11 light-years
- HIP 46199 10.4 light-years
- HIP 48509 12.2 light-years
- GJ 3554 13.0 light-years
- WISEA J095729.41+462413.5 13.1 light-years
- HIP 52470 13.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.