Lambda1 Phoenicis
Star in the constellation Phoenix
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λ1 Phoenicis, Latinized as Lambda1 Phoenicis, is a double star[10] in the southern constellation of Phoenix. It is visible to the naked eye as a faint, white-hued point of light with a combined apparent visual magnitude of 4.76.[2] The system is located approximately 183 light years away from the Sun based on parallax.[1] It is a member of the Hyades Supercluster.[11]
 | |
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Phoenix |
| Right ascension | 00h 31m 24.98200s[1] |
| Declination | −48° 48′ 12.6759″[1] |
| Apparent magnitude (V) | 4.76[2] |
| Characteristics | |
| Spectral type | A0Va[3] |
| U−B color index | +0.04[4] |
| B−V color index | +0.02[4] |
| Astrometry | |
| Radial velocity (Rv) | −2.0±4.2[5] km/s |
| Proper motion (μ) | RA: +139.946[1] mas/yr Dec.: +21.275[1] mas/yr |
| Parallax (π) | 17.8163±0.2228 mas[1] |
| Distance | 183 ± 2 ly (56.1 ± 0.7 pc) |
| Absolute magnitude (MV) | 1.14[2] |
| Details | |
| Mass | 2.26[6] M☉ |
| Radius | 2.24[7] R☉ |
| Luminosity | 33.68[2] L☉ |
| Surface gravity (log g) | 4.17[6] cgs |
| Temperature | 9,931[6] K |
| Metallicity [Fe/H] | 0.00[8] dex |
| Rotational velocity (v sin i) | 111[6] km/s |
| Age | 224[6] Myr |
| Other designations | |
| λ1 Phe, CD−49°115, FK5 15, GC 619, HD 2834, HIP 2472, HR 125, SAO 215131, CCDM J00314-4848A, WDS J00314-4848A[9] | |
| Database references | |
| SIMBAD | data |
The brighter component is an A-type main-sequence star with a stellar classification of A0Va.[3] It may form a binary system of two roughly equal stars.[10] An infrared excess suggests there is a debris disk orbiting 46.3 AU from the star with a mean temperature of 95 K.[7] It has one visual companion at an angular separation of about 30″ and magnitude 13.7.[12][13]