HD 199942
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Equuleus |
| Right ascension | 21h 00m 03.95s |
| Declination | 07° 30′ 58.2″ |
| Apparent magnitude (V) | 5.98 |
| Characteristics | |
| Spectral type | A6Vp[1] |
| B−V color index | 0.28[2] |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -26.20 ± 999.00[2] km/s |
| Proper motion (μ) | RA: 40.70 ± 1.50[2] mas/yr Dec.: 12.40 ± 1.50[2] mas/yr |
| Parallax (π) | 13.19 ± 0.64[2] mas |
| Distance | 235.523465704[3] ly (72.12[1] pc) |
| Absolute magnitude (MV) | 1.69 |
| Details | |
| Mass | 1.8[1] M☉ |
| Radius | 1.6[1] R☉ |
| Luminosity | 9[1] L☉ |
| Temperature | 7800[1] K |
| Metallicity [Fe/H] | n/a dex |
| Age | 2.2 Gyr |
| Other designations | |
HD 199942 (HR 8038) is an A-type main sequence star in the constellation of Equuleus. At 235.2 light years away, this star shines dimly at an apparent magnitude of 5.98.
Galactic Orbit
HD 199942 is a double star system, which is moving through the galaxy at a speed of 30.3km/s.[2] Its galactic orbit carry it somewhere between 25100-22000 light years from the galactic core, and it'll come at its closest to the Sun 2.1 million years from now, shining at an apparent magnitude of 4.49 at a distance of 124 light years.[2]
See also
References
External links
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