HD 143346

HD 143346
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Apus
Right ascension 16h 05m 55.8193s[1]
Declination −72° 24′ 03.2428″[1]
Apparent magnitude (V) 5.68±0.01[2]
Characteristics
Evolutionary stage horizontal branch[3]
Spectral type K1.5 III CN1[4]
U−B color index +1.26[5]
B−V color index +1.17[5]
Astrometry
Radial velocity (Rv)49±0.9[6] km/s
Proper motion (μ) RA: −32.468 mas/yr
Dec.: +70.299 mas/yr
Parallax (π)11.3858 ± 0.0386 mas[1]
Distance286.5 ± 1.0 ly
(87.8 ± 0.3 pc)
Absolute magnitude (MV)+0.95[7]
Details
Mass1.18[8] M☉
Radius10.6[9] R☉
Luminosity52.6±0.4[1] L☉
Surface gravity (log g)2.43[8] cgs
Temperature4,520±90[10] K
Metallicity [Fe/H]+0.30±0.16[3] dex
Rotational velocity (v sin i)<1[11] km/s
Other designations
38 G. Apodis[12], CPD−72° 1902, FK5 3269, GC 21557, HD 143346, HIP 78868, HR 5955, SAO 257357[13]
Database references
SIMBADdata

HD 143346 (HR 5595) is a single[14] star in the southern circumpolar constellation of Apus. It is 28.5 minutes west and about 5° north of the yellow giant star Gamma Apodis, which is the second brightest star in the constellation of Apus.

This object has an orange hue and is visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.68[2] It is located at a distance of approximately 286 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of 49 km/s. At that distance, the visual brightness of this star is diminished by an extinction of 0.174 due to interstellar dust.[3] The star has an absolute magnitude of 0.95.[7]

HD 1433456 has a stellar classification of K1.5III CN1,[4] indicating a red giant that has an anomalous overabundance of cyanogen in the spectrum. It is currently on the horizontal branch, generating fusion via a helium core. At present it has 118% the mass of the Sun but has expanded to 10.6 times the radius of the Sun.[9] The star is radiating 53 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,520 K.[10] HD 1433456 is a member of the Milky Way's thick disk,[15] but is metal enriched.[3] It spins with a projected rotational velocity lower than 1 km/s.[11]

  1. ^ a b c d e f Cite error: The named reference DR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Jones2011 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Charbonnel2020 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference DeMederios2014 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference GouldNEW was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggen1993 was invoked but never defined (see the help page).