HD 72561

HD 72561
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Hydra
Right ascension 08h 33m 43.47908s[1]
Declination +04° 45′ 25.1949″[1]
Apparent magnitude (V) 5.867[2]
Characteristics
Spectral type G5 III[3]
U−B color index +0.87[4]
B−V color index +1.07[4]
Astrometry
Radial velocity (Rv)+1.60 ± 0.3[5] km/s
Proper motion (μ) RA: −13.18[1] mas/yr
Dec.: −6.84[1] mas/yr
Parallax (π)1.98 ± 0.41 mas[1]
Distanceapprox. 1,600 ly
(approx. 500 pc)
Details[6][note 1]
Mass4.58 ± 0.40 M☉
Radius48.41 ± 9.26 R☉
Luminosity1109.6 ± 422.9 L☉
Surface gravity (log g)1.80 ± 0.15 cgs
Temperature4792 ± 36 K
Metallicity [Fe/H]−0.16 ± 0.10 dex
Age0.15 ± 0.04 Gyr
Other designations
BD+05° 1997, HIP 42008, HR 3378, SAO 116890[3]
Database references
SIMBADdata

HD 72561 is a star in the constellation Hydra. Its apparent magnitude is 5.867.[2] Based on parallax shift, it is located about 1,600 light-years (500 parsecs) away.[1]

HD 72561 is a G-type giant star. It is over 4 times as massive as the Sun and 48 times as wide. It is about 150 million years old.[6]

  1. ^ a b c d e f Cite error: The named reference HIP was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference TYC2 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Reffert was invoked but never defined (see the help page).


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