| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 36m 45.00656s[2] |
| Declination | +48° 40′ 15.57327″[2] |
| Apparent magnitude (V) | 11.2 – 11.82 variable [3] |
| Characteristics | |
| 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: −4.606±0.058 [2] mas/yr Dec.: −3.712±0.054[2] mas/yr |
| Parallax (π) | 0.9179 ± 0.0365 mas[2] |
| Distance | 3,600 ± 100 ly (1,090 ± 40 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 | |
| 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.
- ^ Cite error: The named reference
curvewas invoked but never defined (see the help page). - ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c Cite error: The named reference
GCVSwas invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
Liakos2012was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
2MASS Catwas invoked but never defined (see the help page).