HD 101570

HD 101570
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 11h 40m 53.63379s[1]
Declination −62° 05′ 24.3655″[1]
Apparent magnitude (V) 4.93[2]
Characteristics
Spectral type G3Ib[3]
B−V color index 1.111±0.054[2]
Astrometry
Radial velocity (Rv)+18.04±0.18[1] km/s
Proper motion (μ) RA: −15.493±0.082[1] mas/yr
Dec.: +0.981±0.087[1] mas/yr
Parallax (π)3.0181 ± 0.0777 mas[1]
Distance1,080 ± 30 ly
(331 ± 9 pc)
Absolute magnitude (MV)−2.24[2]
Details
Mass17.0[4] M☉
Radius61.2[5] R☉
Luminosity2,168[4] L☉
Surface gravity (log g)1.86[4] cgs
Temperature4,753[5] K
Rotational velocity (v sin i)21.4±2.1[6] km/s
Other designations
CD−61°3145, GC 16037, HD 101570, HIP 56986, HR 4499, SAO 251535[7]
Database references
SIMBADdata

HD 101570 is a single[8] star in the southern constellation of Centaurus. It has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.93. The star is located at a distance of approximately 1,080 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +18 km/s. It has an absolute magnitude of −2.24.

This is an ageing supergiant star with a stellar classification of G3Ib.[3] Having exhausted the supply of hydrogen at its core, the star has expanded to 61 times the radius of the Sun. It has an abnormally high rate of rotation for its evolutionary state, showing a projected rotational velocity of 21.4 km/s.[9] The star is radiating 1,641 times the luminosity of the Sun from its photosphere at an effective temperature of 4,753 K.

  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 c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1979 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Fouesneau2022 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference ticv8 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference DeMedeiros2002 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 Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference daSilva2015 was invoked but never defined (see the help page).