DS Andromedae
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Right ascension01h 57m 46.0561s[1]
Declination+38° 04′ 28.431″[1]
Apparentmagnitude(V)10.44 – 10.93 variable[2]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 57m 46.0561s[1] |
| Declination | +38° 04′ 28.431″[1] |
| Apparent magnitude (V) | 10.44 – 10.93 variable[2] |
| Characteristics | |
| Spectral type | F3IV-V + G0V[3] |
| Apparent magnitude (B) | 10.89[4] |
| Apparent magnitude (V) | 10.52[4] |
| Apparent magnitude (G) | 10.4555[1] |
| Apparent magnitude (J) | 9.653[5] |
| Apparent magnitude (H) | 9.481[5] |
| Apparent magnitude (K) | 9.407[5] |
| Variable type | Algol[2] |
| Astrometry | |
| Radial velocity (Rv) | 2.5±2.0[3] km/s |
| Proper motion (μ) | RA: 10.172±0.082 [1] mas/yr Dec.: 11.78±0.08[1] mas/yr |
| Parallax (π) | 2.1968±0.0404 mas[1] |
| Distance | 1,480 ± 30 ly (455 ± 8 pc) |
| Orbit | |
| Period (P) | 1.0105188 days[2] |
| Semi-major axis (a) | 5.77 R☉[3] |
| Eccentricity (e) | 0[3] |
| Inclination (i) | 84.3[3]° |
| Periastron epoch (T) | HJD 2,436,142.405[3] |
| Semi-amplitude (K1) (primary) | 110[6] km/s |
| Semi-amplitude (K2) (secondary) | 180[6] km/s |
| Details[3] | |
| Primary | |
| Mass | 1.58±0.17 M☉ |
| Radius | 2.10±0.08 R☉ |
| Luminosity | 8.3 L☉ |
| Temperature | 6,775 K |
| Age | 2 Gyr |
| Secondary | |
| Mass | 0.94±0.10 M☉ |
| Radius | 1.19±0.05 R☉ |
| Luminosity | 1.6 L☉ |
| Temperature | 5,997 K |
| Age | 2 Gyr |
| Other designations | |
| 2MASS J01574604+3804284, BD+37 435, TYC 2816-2203-1 | |
| Database references | |
| SIMBAD | data |
DS Andromedae (often abbreviated to DS And) is an eclipsing binary star in the constellation Andromeda and a member of the open cluster NGC 752. Its maximum apparent visual magnitude is 10.44, but drops down to 10.93 during the main eclipse and to 10.71 during the secondary one.
