49 Camelopardalis
File:49CamLightCurve.png A visual band light curve for 49 Camelopardalis, adapted from Adelman and Kaewkornmaung, (2005)Template:Sfn> | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 6.50Template:Sfn (6.43–6.48)Template:Sfn |
| Characteristics | |
| Spectral type | A7VpSrCrEuSiKsnTemplate:Sfn |
| B−V Template:Engvar | Script error: No such module "val".Template:Sfn |
| Variable type | α2 CVnTemplate:Sfn |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".Template:Sfn km/s |
| Proper motion (μ) | RA: −36.63Template:Sfn mas/yr Dec.: −61.36Template:Sfn mas/yr |
| Parallax (π) | 10.4369±0.0566 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 1.58Template:Sfn |
| DetailsTemplate:Sfn | |
| Mass | Script error: No such module "val". Template:Solar mass |
| Radius | Script error: No such module "val". Template:Solar radius |
| Luminosity | Script error: No such module "val". Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val". cgs |
| Temperature | Script error: No such module "val". K |
| Metallicity [Fe/H] | Script error: No such module "val". dex |
| Rotation | Script error: No such module "val".Template:Sfn |
| Rotational velocity (v sin i) | Script error: No such module "val". km/s |
| Age | Script error: No such module "val". Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[2] | |
| Database references | |
| SIMBAD | data |
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49 Camelopardalis is a variable star in the northern circumpolar constellation of Camelopardalis,[2] located 313 light years from the Sun based on parallax measurements.[1] It has the variable star designation BC Camelopardalis; 49 Camelopardalis is the Flamsteed designation. This star is a challenge to view with the naked eye, having a baseline apparent visual magnitude of 6.50.Template:Sfn It is moving away from the Earth with a heliocentric radial velocity of +6.5 km/s.Template:Sfn
This is a magnetic chemically peculiar starTemplate:Sfn with a stellar classification of A7VpSrCrEuSiKsn,Template:Sfn indicating it is an A-type main-sequence star with overabundances of various elements including strontium and europium, as well as broad, "nebulous" lines. The magnetic field of 49 Camelopardalis shows a relatively complex structure, in combination with distinct abundance patterns across the surface.Template:Sfn
Walter K. Bonsack et al. discovered that 49 Camelopardalis is a variable star, in 1974.[3] It is classified as an Alpha2 Canum Venaticorum type variable and its brightness varies from visual magnitude +6.43 down to +6.48 with a rotationally-modulated period of 4.29 days.Template:Sfn
49 Camelopardalis has 1.9 times the mass of the Sun and 2.3 times the Sun's radius. It is around 891 million years oldTemplate:Sfn and is spinning with a period of 4.29 days.Template:Sfn The star is radiating 17 times the luminosity of the Sun from its photosphere at an effective temperature of 7,740 K.Template:Sfn
References
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- ↑ a b c d Template:Cite DR2
- ↑ a b Template:Cite simbad
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Sources
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