HD 95808

Last updated
HD 95808
Observation data
Epoch J2000        Equinox J2000
Constellation Crater
Right ascension 11h 03m 14.87973s [1]
Declination −11° 18 12.4981 [1]
Apparent magnitude  (V)5.50 [2]
Characteristics
Spectral type G7-IIIb [3]
B−V color index +0.94 [2]
Astrometry
Radial velocity (Rv)−8.90 ± 0.10 [4]  km/s
Proper motion (μ)RA: −81.61 [1]   mas/yr
Dec.: −108.01 [1]   mas/yr
Parallax (π)9.63 ± 0.69 [1]   mas
Distance 340 ± 20  ly
(104 ± 7  pc)
Details [4]
Mass 2.43 ± 0.15  M
Radius 10.10 ± 0.76  R
Luminosity 64.6  L
Surface gravity (log g)3.05 ± 0.07  cgs
Temperature 5029 ± 34  K
Metallicity [Fe/H]−0.04 ± 0.03  dex
Rotational velocity (v sin i)2.27 ± 0.45 km/s
Age 0.68 ± 0.13  Gyr
Other designations
BD−10° 3184, HD  95808, HIP  54029, HR  4305, SAO  156421
Database references
SIMBAD data

HD 95808 is a double star in the constellation of Crater. Its apparent magnitude is 5.50, [2] but interstellar dust makes it appear 0.11 magnitudes dimmer than it should be. [4] It is located some 340 light-years (104 parsecs) away, based on parallax. [1]

HD 95808 is a G-type giant star. At an age of 680 million years old, it has swelled up to a radius of 10.1 times that of the Sun, and it is 2.43 times as massive. It emits 64.6 times as much energy as the Sun at a surface temperature of 5,029 K. [4]

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Rho Cygni Star in the constellation Cygnus

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Chi Piscium Star in the constellation Pisces

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71 Ophiuchi star in the constellation of Ophiuchus

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HD 165634 Star in the constellation Sagittarius

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π Fornacis is the Bayer designation for a binary star system in the southern constellation of Fornax. It has an apparent visual magnitude of 5.360, which is bright enough to be seen with the naked eye on a dark night. With an annual parallax shift of 11.08 mas, it is estimated to lie around 294 light years from the Sun. At that distance, the visual magnitude is diminished by an interstellar absorption factor of 0.10 due to dust.

References

  1. 1 2 3 4 5 6 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600.
  2. 1 2 3 Corben, P. M. (1966). "Photoelectric magnitudes and colours for bright southern stars". Monthly Notes of the Astron. Soc. Southern Africa. 25: 44. Bibcode:1966MNSSA..25...44C.
  3. Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. 1 2 3 4 Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; de la Villarmois, E. Artur; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv: 1410.6422 . Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. S2CID   53666931.