Struve 2398
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000 |
|
|---|---|
| Constellation | Draco |
| Right ascension | 18h 42m 46.7/46.9s |
| Declination | +59° 37' 49/36" |
| Apparent magnitude (V) | 8.94/9.70 |
| Spectral Characteristics | |
| Spectral type | M3 V/M3.5 V |
| U-B color index | 1.11/1.14 |
| B-V color index | 1.53/1.59 |
| Variable type | Flare star |
| Astrometry | |
| Radial velocity (Rv) | -0.9 km/s |
| Proper motion (μ) | RA: -1327 mas/yr Dec.: 1802 mas/yr |
| Parallax (π) | 283.00 ± 1.69 mas |
| Distance | 11.52 ± 0.07 ly (3.53 ± 0.02 pc) |
| Absolute magnitude (MV) | 11.20/11.96 |
| Other designations | |
Struve 2398 is a binary star system in the constellation Draco. Both stars are red dwarfs and both display variability common to flare stars. The orbital period for the pair is about 408 years, and the eccentricity of the orbit is 0.53.
[edit] See also
[edit] External links
 |
This variable star–related article is a stub. You can help Wikipedia by expanding it. |
