4 Scorpii

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4 Scorpii
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 15h 55m 30.079s[1]
Declination −26° 15′ 57.58″[1]
Apparent magnitude (V) +5.63
Characteristics
Spectral type A3V
Astrometry
Proper motion (μ) RA: -35.80 ± 0.73[1] mas/yr
Dec.: -30.09 ± 0.82[1] mas/yr
Parallax (π) 7.99 ± 0.77[1] mas
Distance 410 ± 40 ly
(130 ± 10 pc)
Absolute magnitude (MV) +0.0197
Details
Mass 2.2 M
Radius R
Luminosity (visual, LV) 20 L
Temperature 8,700 K
Other designations
4 Scorpii, HD142445, HIP 77984


4 Scorpii is a star in the constellation of Scorpius.

See also[edit]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (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.  Vizier catalog entry