Psi1 Lupi

Psi1 Lupi
Observation data
Epoch {{{epoch}}}      Equinox
Constellation Lupus
Right ascension 15h 39m 45.9789s
Declination -34° 24′ 42.934″
Apparent magnitude (V) +4.67
Characteristics
Spectral type G8III
Astrometry
Distance 205.38 ly
(63 [1] pc)
Details
Mass 1.94 M
Radius 13[1] R
Luminosity 89.5 L
Temperature 4930[1] K
Other designations
* psi01 Lup, 3 Lup, GEN# +1.00139521, 2MASS J15394598-3424426, SRS 43309, GSC 07335-00935, N30 3520, TD1 18428, CD-33 10631, HD 139521, PLX 3533, TYC 7335-935-1, CPC 17 8092, HIC 76705, PMC 90-93 1367, UBV 13358, CPD-34 6383, HIP 76705, PPM 294100, UBV M 20882, FK5 3237, HR 5820, SACS 343, GC 21042, IRAS 15365-3415, SAO 206843, GCRV 9036, JP11 2626, SKY# 28334
Database references
SIMBAD data

Psi1 Lupi is an orange giant star located 205 light years away from the Sun, in the Lupus constellation. The star is surrounded by a cold circumstellar envelope, hinted at by the anomaly of the small observed power of the doublet Mg II emission at 2800 angstrom. The absorption cores on the peaks of the emission profiles Mg II k and h are mainly of interstellar origin and only partly due to self-absorption in the star's chromosphere.[1]

References

  1. ^ a b c d Gurzadian et al.; Kondo, Y.; Ohanesyan, J. B.; Terzian, Yervant; Perez, Mario R. (1991). "A cool giant with a circumstellar cloud". Astrophysics and Space Science 176 (1): 61–68. Bibcode 1991Ap&SS.176...61G. doi:10.1007/BF00643077.