AD Andromedae
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Right ascension23h 36m 45.00656s[2]
Declination+48° 40′ 15.5746″[2]
Apparentmagnitude(V)11.2 – 11.82 variable [3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 36m 45.00656s[2] |
| Declination | +48° 40′ 15.5746″[2] |
| Apparent magnitude (V) | 11.2 – 11.82 variable [3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | A0V[3] |
| Apparent magnitude (B) | 11.2[4] |
| Apparent magnitude (V) | 11.0[4] |
| Apparent magnitude (G) | 11.0304[2] |
| Apparent magnitude (J) | 10.897[5] |
| Apparent magnitude (H) | 10.819[5] |
| Apparent magnitude (K) | 10.769[5] |
| B−V color index | 0.80[4] |
| Variable type | β Lyrae[3] |
| Astrometry | |
| Proper motion (μ) | RA: −4.614±0.022 [2] mas/yr Dec.: −3.809±0.022[2] mas/yr |
| Parallax (π) | 0.9280±0.0260 mas[2] |
| Distance | 3,510 ± 100 ly (1,080 ± 30 pc) |
| Orbit[4] | |
| Period (P) | 0.986 days |
| Semi-major axis (a) | 7.5 R☉ |
| Inclination (i) | 82.6° |
| Periastron epoch (T) | HJD 2,439,002.458 |
| Details[4] | |
| Primary | |
| Mass | 2.76 M☉ |
| Radius | 2.3 R☉ |
| Luminosity | 44 L☉ |
| Temperature | 9,800 K |
| Secondary | |
| Mass | 2.7 M☉ |
| Radius | 2.4 R☉ |
| Luminosity | 47 L☉ |
| Temperature | 9,720 K |
| Other designations | |
| 2MASS J23364500+4840155, BD+47 4207, TYC 3641-151-1, GSC 03641-00151 | |
| Database references | |
| SIMBAD | data |
AD Andromedae (AD And) is an eclipsing binary in the constellation Andromeda. Its maximum apparent visual magnitude is 11.2, but it shows a decrease of 0.62 magnitudes during the main eclipse and 0.58 during the secondary one. It is classified as a Beta Lyrae variable star with a period of almost one day.
