53 Arietis
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53 Arietis
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aries |
| Right ascension | 03h 07m 25.6726s |
| Declination | +17° 52′ 47.982″ |
| Apparent magnitude (V) | 6.124 |
| Characteristics | |
| Spectral type | B1.5V |
| U−B color index | -0.79 |
| B−V color index | -0.12 |
| Variable type | Beta Cephei variable |
| Astrometry | |
| Radial velocity (Rv) | 21.2 km/s |
| Proper motion (μ) | RA: -23.54 mas/yr Dec.: 9.3 mas/yr |
| Parallax (π) | 4.32 ± 0.98 mas |
| Distance | approx. 800 ly (approx. 230 pc) |
| Absolute magnitude (MV) | 6.002 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20,000 L☉ |
| Temperature | 10,000–30,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
53 Arietis is a variable star of Beta Cephei type, alternatively denoted UW Arietis, in the constellation Aries. Its mean apparent magnitude is 6.13 and its spectral type is O or early B. It is a runaway star, thought to have been produced as a consequence of one of a pair of binary stars colliding. Tracing its motion back shows it was ejected from the Trapezium cluster in the Orion nebula approximately two million years ago.
References
- Jerzykiewicz, Mikolaj (1974). "Photometry of UW ARIETIS and V600 Herculis". Publications of the Astronomical Society of the Pacific 86: 43. Bibcode 1974PASP...86...43J. doi:10.1086/129556.
- HR 938
- Image 53 Arietis
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