HD 66141
| 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 |
| Astrometry | |
| Parallax (π) | 12.84 mas ± 0.25 mas mas |
| Distance | 254 ± 6.5 ly (77.9 ± 2 pc) |
| Details | |
| Mass | 1.1 ± 0.1 M☉ |
| Radius | 21.4 ± 0.6 R☉ |
| Luminosity | 174 L☉ |
| Surface gravity (log g) | 1.3 ± 0.5, 1.78 ± 0.04 cgs |
| Temperature | 4305 ± 15 K |
| Metallicity | -0.32 ± 0.034 |
| Rotation | 1.5 |
| Age | 6.84 ± 1.39 × 109 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 66141, also known as HR 3145 and 50 G. Canis Minoris, is the main star of a binary system 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. Bode gave it the Bayer designation of Lambda Canis Minoris.
Over 2003 to 2012 a starspot was periodically dimming its light.
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)".
In 2012, a long-period, wide-orbiting planet was deduced by radial velocity. This was published in November.
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