Gamma Apodis

Gamma Apodis
Diagram showing star positions and boundaries of the Ara constellation and its surroundings
Location of γ Apodis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
Right ascension 16h 33m 27.08379s[1]
Declination −78° 53′ 49.7372″[1]
Apparent magnitude (V) 3.86[2]
Characteristics
Spectral type G9 III[2]
U−B color index +0.62[3]
B−V color index +0.91[3]
Astrometry
Radial velocity (Rv)+5.7[2] km/s
Proper motion (μ) RA: –126.122 ± 0.688[4] mas/yr
Dec.: –78.699 ± 0.667[4] mas/yr
Parallax (π)21.7674 ± 0.5542 mas[4]
Distance150 ± 4 ly
(46 ± 1 pc)
Absolute magnitude (MV)+0.41[5]
Details
Surface gravity (log g)3.5[6] cgs
Temperature5,040[6] K
Metallicity [Fe/H]–0.05[6] dex
Rotational velocity (v sin i)2.7[2] km/s
Other designations
FK5 611, GJ 626.1, HD 147675, HIP 81065, HR 6102, SAO 257407, CPD–78° 1103[7]
Database references
SIMBADdata

Gamma Apodis (γ Aps, γ Apodis) is the Bayer designation for a star in the southern circumpolar constellation of Apus. From parallax measurements, the distance to this star can be estimated as 150 ± 4 light-years (46.0 ± 1.2 pc).[4] It is visible to the naked eye with an apparent visual magnitude of 3.86.[2] A stellar classification of G9 III[2] identifies it as a giant star in the later stages of its evolution. It is an active X-ray source with a luminosity of 1.607 × 1030 erg s−1, making it one of the 100 strongest stellar X-ray sources within 50 parsecs of the Sun.[8]

  1. ^ a b Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference aaa508_2_833 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  4. ^ a b c d 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.
  5. ^ Cite error: The named reference Cardini2005 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference aaa206_1_100 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference aj126_4_1996 was invoked but never defined (see the help page).