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HD 30080

HD 30080
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Caelum
Right ascension 04h 43m 09.29298s[1]
Declination −30° 45′ 56.0166″[1]
Apparent magnitude (V) 5.66±0.01[2]
Characteristics
Evolutionary stage red giant branch[1]
Spectral type K3 III[3]
U−B color index +1.60[4]
B−V color index +1.39[4]
Astrometry
Radial velocity (Rv)−3.8±2.9[5] km/s
Proper motion (μ) RA: −30.790 mas/yr[1]
Dec.: −67.724 mas/yr[1]
Parallax (π)5.326 ± 0.0417 mas[1]
Distance612 ± 5 ly
(188 ± 1 pc)
Absolute magnitude (MV)−0.8[6]
Details
Mass1.16[7] M☉
Radius41.62[8] R☉
Luminosity299±5[9] L☉
Surface gravity (log g)1.40[7] cgs
Temperature4,262±122[10] K
Metallicity [Fe/H]+0.01[11] dex
Rotational velocity (v sin i)<1[12] km/s
Other designations
12 G. Caeli[13], CD−30°1968, CPD−31°593, GC 5762, HD 30080, HIP 21958, HR 1509, SAO 195250[14]
Database references
SIMBADdata

HD 30080, also known as HR 1509, is a solitary,[15] orange hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 5.66,[2] allowing it to be faintly visible to the naked eye. Parallax measurements from Gaia DR3 place the object at a distance of 612 light years. It appears to be approaching the Solar System with a heliocentric radial velocity of −3.8 km/s.[5] Eggen (1989) lists it as a member of the thick disk population.[11]

HD 30080 is an evolved red giant with a stellar classification of K3 III.[3] It is currently on the red giant branch,[1] generating energy by fusing a hydrogen shell around an inert helium core. It has 116% the mass of the Sun[7] but has expanded to 41.6 times its girth.[8] It radiates 299 times the luminosity of the Sun[9] from its enlarged photosphere at an effective temperature of 4,262 K.[10] HD 30080 has a solar metallicity[11] and spins slowly with a projected rotational velocity of <1 km/s.[12]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 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 Cite error: The named reference Houk1982 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference XHIP was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference Eggen1989 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference DeMed2014 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).

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