40 Cancri
Star 40 Cancri |
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AladinLite | |||||||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | cancer | ||||||||||||||
Right ascension | 08 h 40 m 11.45 s | ||||||||||||||
declination | + 19 ° 58 ′ 16.1 ″ | ||||||||||||||
Apparent brightness | 6.6 likes | ||||||||||||||
Typing | |||||||||||||||
B − V color index | +0.01 | ||||||||||||||
Spectral class | A1 V | ||||||||||||||
Astrometry | |||||||||||||||
Radial velocity | 34.4 ± 0.6 km / s | ||||||||||||||
parallax | (5.21 ± 0.07) mas | ||||||||||||||
distance | 625 ly 190 pc |
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Proper movement | |||||||||||||||
Rec. Share: | −35.31 ± 0.11 mas / a | ||||||||||||||
Dec. portion: | −13.60 ± 0.07 mas / a | ||||||||||||||
Physical Properties | |||||||||||||||
Age | (5 to 350) mill. A | ||||||||||||||
Other names and catalog entries |
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40 Cancri is a star about 630 light years away and is in the open star cluster Messier 44 . He's one of the blue stragglers .
40 Cancri appears to be a slowly rotating star that does not have a strong magnetic field . It is believed that it was not created by mass transfer , but by the collision of a double star about 5 to 350 million years ago.
Web links
Individual evidence
- ↑ a b c d e f g 40 Cnc. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on August 24, 2018 .
- ↑ a b L. Fossati, p Mochnacki, J. Country Street, W. Weiss: Explaining the Praesepe blue straggler HD 73666 . In: A&A . 510, 2010. bibcode : 2010A & A ... 510A ... 8F . doi : 10.1051 / 0004-6361 / 200811495 .