11 Camelopardalis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.08[3] |
| Characteristics | |
| Spectral type | B3 Ve[4] |
| B−V Template:Engvar | −0.080[5] |
| Variable type | Be[6] |
| Astrometry | |
| Proper motion (μ) | RA: −6.264[2] mas/yr Dec.: −7.118[2] mas/yr |
| Parallax (π) | 4.7543±0.1224 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −1.38[5] |
| Details | |
| Mass | Script error: No such module "val".[7] Template:Solar mass |
| Radius | 7.87[8] Template:Solar radius |
| Luminosity | Script error: No such module "val".[7] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[7] cgs |
| Temperature | Script error: No such module "val".[7] K |
| Rotational velocity (v sin i) | Script error: No such module "val".[7] km/s |
| Age | Script error: No such module "val".[9] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
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11 Camelopardalis is a single[11] star in the northern circumpolar constellation of Camelopardalis, located around 690 light years away from the Sun as determined by parallax. It has the variable star designation BV Camelopardalis; 11 Camelopardalis is the Flamsteed designation. This object is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of +5.22.[5] It forms a double star with 12 Camelopardalis, which is only 3 arcminutes away.
This is a main sequence Be star with a stellar classification of B3 Ve.[4] John R. Percy et al. discovered that 11 Camelopardalis is a variable star in 1979, and published that finding in 1981.[12] It was given its variable star designation in 1987.[13] Samus et al. (2017) classify it as a Be variable, rather than a Gamma Cassiopeiae type, and it ranges from a peak Hipparcos magnitude of 5.10 down to 5.22.[6] The star is spinning with a projected rotational velocity of 95 km/s,[7] but is being viewed from an extreme pole-on position. Hence it is spinning much more rapidly than indicated. Outbursts of hydrogen emission lines have been observed, as well as rapid changes in hydrogen line profiles.[14] It is 25[9] million years old with around six[7] times the mass of the Sun.
References
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- ↑ Template:Cite simbad
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