Xi Puppis

ξ Puppis
Location of ξ Puppis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07h 49m 17.65567s[1]
Declination −24° 51′ 35.2305″[1]
Apparent magnitude (V) 3.35[2]
Characteristics
Spectral type G6 Iab-Ib[3]
U−B color index +1.18[2]
B−V color index +1.25[2]
Astrometry
Radial velocity (Rv)+2.7[4] km/s
Proper motion (μ) RA: −4.81[1] mas/yr
Dec.: −0.89[1] mas/yr
Parallax (π)2.72 ± 0.21 mas[1]
Distance1,200 ± 90 ly
(370 ± 30 pc)
Absolute magnitude (MV)–3.89[5]
Details
Mass9.9 ± 1.0[3] M☉
Radius124[6] R☉
Luminosity6,824±641[6] L☉
Surface gravity (log g)0.529[6] cgs
Temperature4,712±125,[6] 4,925[5] K
Metallicity [Fe/H]+0.13[5] dex
Rotational velocity (v sin i)9.2[7] km/s
Age23[3] 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
SIMBADdata

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,[2] 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.[1]

The system consists of a spectroscopic binary, designated Xi Puppis A,[8] together with a third companion star, Xi Puppis B. A's two components are themselves designated Xi Puppis Aa (formally named Azmidi /ˈæzmɪdi/)[9] and Ab.

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference mnras402_2_1369 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gcsrv was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference luck2014 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference tycho-gaia was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference vsini was invoked but never defined (see the help page).
  8. ^ "Washington Double Star Catalog". United States Naval Observatory. Retrieved 20 June 2018.
  9. ^ "Naming Stars". IAU.org. Retrieved 18 June 2018.