Xi Puppis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 49m 17.65567s |
| Declination | −24° 51′ 35.2305″ |
| Apparent magnitude (V) | 3.35 |
| Characteristics | |
| Spectral type | G6 Iab-Ib |
| U−B color index | +1.18 |
| B−V color index | +1.25 |
| Astrometry | |
| Radial velocity (Rv) | +2.7 km/s |
| Proper motion (μ) | RA: −4.81 mas/yr Dec.: −0.89 mas/yr |
| Parallax (π) | 2.72±0.21 mas |
| Distance | 1,200 ± 90 ly (370 ± 30 pc) |
| Absolute magnitude (MV) | –3.89 |
| Details | |
| Mass | 9.9 ± 1.0 M☉ |
| Radius | 124 R☉ |
| Luminosity | 6,824±641 L☉ |
| Surface gravity (log g) | 1.21±0.14 cgs |
| Temperature | 4,712±125, 4,925 K |
| Metallicity [Fe/H] | +0.13 dex |
| Rotational velocity (v sin i) | 9.2 km/s |
| Age | 23 Myr |
| Other designations | |
| Azmidi, Azmidiske, Asmidiske, ξ Puppis, ξ Pup, Xi Pup, 7 Puppis, CCDM J07493-2452A; CPD−24 2939, FK5 1204, GC 10562, HD 63700, HIP 38170, HR 3045, IDS 07451-2437 A, PPM 253258, SAO 174601, WDS J07493-2452A. | |
| Database references | |
| SIMBAD | data |
Xi Puppis (ξ Puppis, abbreviated Xi Pup, ξ Pup) is a multiple star system in the southern constellation of Puppis. With an apparent visual magnitude of 3.35, it is one of the brighter members of this constellation. Based on parallax measurements made during the Hipparcos mission, it is located approximately 1,200 light-years (370 parsecs) from the Sun, with a 7.5% margin of error.
The system consists of a spectroscopic binary, designated Xi Puppis A, together with a third companion star, Xi Puppis B. A's two components are themselves designated Xi Puppis Aa (formally named Azmidi /ˈæzmɪdi/) and Ab.