Eta Apodis

η Apodis
Location of η Apodis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
Right ascension 14h 18m 13.89774s[1]
Declination −81° 00′ 27.9300″[1]
Apparent magnitude (V) +4.89[2]
Characteristics
Spectral type A2MA7-F2[3] or A2(m) CrEu[4]
U−B color index +0.11[5]
B−V color index +0.25[5]
Astrometry
Radial velocity (Rv)−9.4[2] km/s
Proper motion (μ) RA: −19.854 ± 0.227[6] mas/yr
Dec.: −65.413 ± 0.222[6] mas/yr
Parallax (π)23.1651 ± 0.1430 mas[6]
Distance140.8 ± 0.9 ly
(43.2 ± 0.3 pc)
Absolute magnitude (MV)+1.76[7]
Details
Mass1.77[8] M☉
Radius2.13[8] R☉
Luminosity15.5[8] L☉
Temperature7,860 ± 20[8] K
Rotational velocity (v sin i)17.2 ± 0.3[9] km/s
Age250 ± 200[8] Myr
Other designations
CD−80 706, FK5 3129, HD 123998, HIP 69896, HR 5303, SAO 258693.[10]
Database references
SIMBADdata

Eta Apodis, Latinized from η Apodis, is a star in the southern circumpolar constellation Apus. Based upon parallax measurements from the Hipparcos mission, it is approximately 141 light-years (43 parsecs) from Earth. With an apparent visual magnitude of +4.9,[2] it can be viewed with the naked eye from the southern hemisphere.

  1. ^ a b Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference scfs was invoked but never defined (see the help page).
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  5. ^ a b Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  6. ^ a b c 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.
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference apj698 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference aaa531_A143 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).