HD 90089

HD 90089

Observation data Epoch J2000      Equinox J2000
Constellation	Camelopardalis
Right ascension	10^h 31^m 04.6638^s
Declination	+82° 33′ 30.915″
Apparent magnitude (V)	5.25[1]
Characteristics
Spectral type	F2V[1]
U−B color index	-0.05
B−V color index	0.40[1]
Variable type	Variable star NSV 4864
Astrometry
Radial velocity (Rv)	7 km/s
Proper motion (μ)	RA: -79.21 mas/yr Dec.: 20.43 mas/yr
Parallax (π)	46.54 ± 0.55 mas
Distance	70.1 ± 0.8 ly (21.5 ± 0.3 pc)
Absolute magnitude (MV)	5.608
Details
Luminosity (bolometric)	2.840[1] L☉
Surface gravity (log g)	4.32[1] cgs
Temperature	6,170[1] K
Metallicity [Fe/H]	−0.26[1] dex
Rotation	56.2[1]
Age	0.30[1] Gyr
Other designations
BD+83° 297, FK5 911, HIP 51502, HR 4084, SAO 1714.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

HD 90089 is a suspected variable star in the constellation Camelopardalis.

An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of 145 AU. The temperature of this dust is 30 K.^[1]

References

1. Eiroa, C.; et al. (July 2013). "DUst around NEarby Stars. The survey observational results". Astronomy & Astrophysics 555: A11. arXiv:1305.0155. Bibcode:2013A&A...555A..11E. doi:10.1051/0004-6361/201321050.

• HR 4084
• Image HD 90089