HD 32453

HD 32453
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Caelum
Right ascension 05h 01m 34.5225s[1]
Declination −39° 43′ 04.9641″[1]
Apparent magnitude (V) 6.01±0.01[2]
Characteristics
Spectral type G8 III[3]
B−V color index +0.88[4]
Astrometry
Radial velocity (Rv)5.73±0.12[1] km/s
Proper motion (μ) RA: −5.456[1] mas/yr
Dec.: +32.717[1] mas/yr
Parallax (π)8.0168 ± 0.0344 mas[1]
Distance407 ± 2 ly
(124.7 ± 0.5 pc)
Absolute magnitude (MV)+0.78[5]
Details
Mass2.40[6] M☉
Radius10.03[7][8] R☉
Luminosity50.1[9] L☉
Surface gravity (log g)3.18±0.14[10] cgs
Temperature5,032±61[9] K
Metallicity [Fe/H]−0.02±0.13[10] dex
Rotational velocity (v sin i)2±1.4[11] km/s
Age700[6] Myr
Other designations
CD–39°1744, HD 32453, HIP 23377, HR 1631, SAO 195501
Database references
SIMBADdata

HD 32453 (HR 1631) is a solitary star located in the southern constellation Caelum. With an apparent magnitude of 6.01,[2] it's barely visible to the naked eye under ideal conditions. This star is located 407 light years away based on its parallax shift, but is drifting away at a rate of 5.73 km/s.[1]

HD 32453 has a classification of G8 III,[3] which states it is an evolved G-type star that exhausted hydrogen at its core and left the main sequence. At present it has 2.40[6] times the Sun's mass, but at an age of 700 million years,[6] HD 32453 has expanded to 10[7] times the latter's girth (radius detected from an angular diameter of 0.748 mas[8]). It radiates at 50[9] solar luminosities from its enlarged photosphere at an effective temperature of 5,032 K,[9] which gives it a yellow hue. HD 32453 is slightly metal deficient,[10] and spins slowly with a projected rotational velocity of 2 km/s,[11] common for a giant star.

  1. ^ a b c d e f g Cite error: The named reference GaiaDR2 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. ^ Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Dermarque2004 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Lang2006 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Stevens2017 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Alves2015 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference DeMed2014 was invoked but never defined (see the help page).