18 Camelopardalis
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 32m 33.7997s[1] |
| Declination | +57° 13′ 15.855″[1] |
| Apparent magnitude (V) | 6.44[2] |
| Characteristics | |
| Spectral type | F8 V[3][2] |
| U−B color index | +0.11[4] |
| B−V color index | +0.587[2] |
| Astrometry | |
| Radial velocity (Rv) | +33.264±0.0160[2] km/s |
| Proper motion (μ) | RA: +111.231[1] mas/yr Dec.: −224.686[1] mas/yr |
| Parallax (π) | 23.0161±0.0633 mas[1] |
| Distance | 141.7 ± 0.4 ly (43.4 ± 0.1 pc) |
| Absolute magnitude (MV) | 3.234+0.076 −0.079[5] |
| Details[6] | |
| Mass | 1.201+0.015 −0.014 M☉ |
| Radius | 1.93+0.08 −0.04[1] R☉ |
| Luminosity | 4.242±0.015[1] L☉ |
| Surface gravity (log g) | 3.95±0.02 cgs |
| Temperature | 5,908±38 K |
| Metallicity [Fe/H] | −0.02±0.04 dex |
| Rotational velocity (v sin i) | 5[7] km/s |
| Age | 5.28+0.25 −0.19 Gyr |
| Other designations | |
| 18 Cam, BD+57°889, FK5 1150, HD 36066, HIP 25973, HR 1828, SAO 25241[8] | |
| Database references | |
| SIMBAD | data |
18 Camelopardalis is a yellow-white-hued star in the northern circumpolar constellation of Camelopardalis. It has an apparent visual magnitude is 6.44,[2] which makes it a challenge to view with the naked eye. Using the measured annual parallax shift of 23.02 mas, its distance can be estimated at 142 light-years. The star is moving away from the Sun with a radial velocity of +33 km/s[2] and has an annual proper motion of 0.251 arcseconds.[9]
The spectrum of this star matches a stellar classification of F8 V,[2] indicating this is an ordinary F-type main-sequence star. It is around 5.3 billion years old and is spinning with a projected rotational velocity of 5 km/s.[7] The star has 1.2 times the mass of the Sun,[6] 1.93 times the Sun's radius,[1] and has near solar abundances of elements.[6] The star is radiating 4.24[1] times the Sun's luminosity from its photosphere at an effective temperature of 5,908 K.[6]
References
[edit | edit source]- ^ a b c d e f g h i Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR2 record for this source at VizieR.
- ^ a b c d e f g Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
