 The visual band light curve of QR Andromedae (adapted from Matsumoto (1996)), The phase is with respect to the 15.85 hour orbital period.[1] | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 19m 49.9253s[2] |
| Declination | +21° 56′ 52.1666″[2] |
| Apparent magnitude (V) | 12.16 – 13.07 variable[3] |
| Characteristics | |
| Spectral type | pec(e)[3] |
| Apparent magnitude (B) | 12.38[4] |
| Apparent magnitude (R) | 11.86[4] |
| Apparent magnitude (G) | 12.2395[2] |
| Apparent magnitude (J) | 12.432[5] |
| Apparent magnitude (H) | 12.295[5] |
| Apparent magnitude (K) | 12.092[5] |
| Variable type | Algol[3] |
| Astrometry | |
| Proper motion (μ) | RA: 18.469±0.071 [2] mas/yr Dec.: −5.529±0.079[2] mas/yr |
| Parallax (π) | 0.4993 ± 0.0452 mas[2] |
| Distance | 6,500 ± 600 ly (2,000 ± 200 pc) |
| Orbit | |
| Period (P) | 0.6604 days[4] |
| Semi-amplitude (K1) (primary) | 61.8±4.4[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
QR Andromedae (often abbreviated to QR And) is an eclipsing binary star in the constellation Andromeda. Its maximum apparent visual magnitude is 12.16, but its light curve shows clearly eclipsing events where its brightness can drop to a magnitude of 13.07.[6] This leads to its classification as an Algol variable star.[3]
- ^ Cite error: The named reference
Matsumotowas 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 d Cite error: The named reference
GCVSwas invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
SuperWASPwas 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). - ^ a b Cite error: The named reference
McGrath2001was invoked but never defined (see the help page).