HD 66141

50 G. Canis Minoris
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Canis Minor
Right ascension	08h 02m 15.94s
Declination	+2° 20′ 4.45″
Apparent magnitude (V)	+4.39
Characteristics
Spectral type	K2III[1]
Astrometry
Parallax (π)	14.6704 ± 0.4509[2] mas
Distance	222 ± 7 ly ; (68 ± 2 pc)
Details
Mass	1.1 ± 0.1[1] M☉
Radius	21.4 ± 0.6[1] R☉
Luminosity	174 L☉
Surface gravity (log g)	1.3 ± 0.5,[3] cgs
Temperature	4305 ± 15[3] K
Metallicity	-0.32 ± 0.034[1]
Rotation	1.5[3]
Age	6.84 ± 1.39 × 109[1] years
Other designations
	HR 3145, HD 66141, BD+02°1854, FK5 2623, HIP 39311, SAO 116260, GC 10891, CCDM 08022+0221, 13 Puppis (obsolete)
Database references
SIMBAD	data
Exoplanet Archive	data
Extrasolar Planets; Encyclopaedia	data

HD 66141, also known as HR 3145 and 50 G. Canis Minoris, is star in the constellation Canis Minor. It is an orange K-type giant, approximately 254 light years from Earth. Its apparent magnitude is +4.39.

When first catalogued it was in the Puppis constellation and was designated "13 Puppis", but it subsequently migrated to Canis Minor.[4] Bode gave it the Bayer designation of Lambda Canis Minoris.[5]

Over 2003 to 2012 a starspot was periodically dimming its light.[3]

Planetary system

From December 2003 to January 2012, the team B.-C. Lee, I. Han, and M.-G. Park observed "HD 66141" with "the fiber-fed Bohyunsan Observatory Echelle Spectrograph (BOES) at Bohyunsan Optical Astronomy Observatory (BOAO)".[3]

In 2012, a long-period, wide-orbiting planet was deduced by radial velocity. This was published in November.

The HD 66141 planetary system[1]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	>6 ± 0.3 M_J	1.2 ± 0.1	480.5 ± 0.5	0.07 ± 0.03	—	—

References

"hd_66141_b".
Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
B.-C. Lee; D. E. Mkrtichian; I. Han; M.-G. Park; K.-M. Kim (2012). "Detection of an exoplanet around the evolved K giant HD 66141". Astronomy & Astrophysics. 548: A118. arXiv:1211.2054. Bibcode:2012A&A...548A.118L. doi:10.1051/0004-6361/201118014.
Griffin, R. F. (1999). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 148: HR 7955". The Observatory. 119: 272–283. Bibcode:1999Obs...119..272G.
Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Lost Stars: Lost. Blacksburg, VA: The McDonald & Woodward Publishing Company. p. 460. Bibcode:2003lslm.book.....W. ISBN 978-0-939923-78-6.

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[exoplaneteu-1] "hd_66141_b".

[Gaia-DR2-2] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[Lee-3] B.-C. Lee; D. E. Mkrtichian; I. Han; M.-G. Park; K.-M. Kim (2012). "Detection of an exoplanet around the evolved K giant HD 66141". Astronomy & Astrophysics. 548: A118. arXiv:1211.2054. Bibcode:2012A&A...548A.118L. doi:10.1051/0004-6361/201118014.

[4] Griffin, R. F. (1999). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 148: HR 7955". The Observatory. 119: 272–283. Bibcode:1999Obs...119..272G.

[5] Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Lost Stars: Lost. Blacksburg, VA: The McDonald & Woodward Publishing Company. p. 460. Bibcode:2003lslm.book.....W. ISBN 978-0-939923-78-6.