42 Cancri
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cancer |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 6.83[2] |
| Characteristics | |
| Spectral type | A7III[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: Script error: No such module "val".[1] mas/yr Dec.: Script error: No such module "val".[1] mas/yr |
| Parallax (π) | 5.2981±0.0548 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.56[2] |
| Details | |
| Mass | Script error: No such module "val".[4] Template:Solar mass |
| Radius | Script error: No such module "val".[4] Template:Solar radius |
| Luminosity | Script error: No such module "val".[1] Template:Solar luminosity |
| Temperature | Script error: No such module "val".[1] K |
| Metallicity [Fe/H] | Script error: No such module "val".[4] dex |
| Rotational velocity (v sin i) | 195[5] km/s |
| Age | Script error: No such module "val".[4] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
42 Cancri is a single[7] star in the northern zodiac constellation of Cancer. With an apparent visual magnitude of 6.83,[2] it is dimmer than what is considered the normal lower limit for visibility with the naked eye. The star is located at a distance of approximately 616 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +35 km/s.[2] 42 Cancri is a member of the Beehive Cluster (NGC 2632).[7]
The stellar classification of this star is A7III,[3] matching an A-type star that is in the giant stage. However, this may be a misclassification of a main sequence star.[8] It has also been classified as a spectroscopic binary,[5] although no orbital elements are published. 42 Cancri is an estimated 603[4] million years old and is spinning rapidly with a projected rotational velocity of 195 km/s.[5] The star has 2.39 times the mass of the Sun and 4.2 times the Sun's radius.[4] It is radiating 51.5[1] times the luminosity of the Sun from its photosphere at an effective temperature of 7,607 K.[1]
References
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- ↑ a b c d e f g h i Template:Cite Gaia DR2
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".