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Star in the constellation Camelopardalis From Wikipedia, the free encyclopedia
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]
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 | |
Database references | |
SIMBAD | data |
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]
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