HD 58425
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Camelopardalis[1] |
| Right ascension | 07h 30m 52.66467s[2] |
| Declination | +68° 27′ 56.3270″[2] |
| Apparent magnitude (V) | 5.64±0.01[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[2] |
| Spectral type | K2 III[4] |
| B−V color index | +1.11[5] |
| Astrometry | |
| Radial velocity (Rv) | 58.6±0.2[6] km/s |
| Proper motion (μ) | RA: −2.031 mas/yr[2] Dec.: −42.687 mas/yr[2] |
| Parallax (π) | 6.9858±0.2644 mas[2] |
| Distance | 470 ± 20 ly (143 ± 5 pc) |
| Absolute magnitude (MV) | −0.05[1] |
| Details | |
| Mass | 1.74±0.52[7] M☉ |
| Radius | 24.7[8] R☉ |
| Luminosity | 199+24 −22[9] L☉ |
| Surface gravity (log g) | 2.4±0.1[10] cgs |
| Temperature | 4,479±62[8] K |
| Metallicity [Fe/H] | −0.42±0.04[10] dex |
| Age | 3.55+0.52 −0.46[7] Gyr |
| Other designations | |
| AG+68°343, BD+68°480, FK5 284, GC 9985, HD 58425, HIP 36528, HR 2830, SAO 14211[11] | |
| Database references | |
| SIMBAD | data |
HD 58425, also known as HR 2830, is an astrometric binary[12] (100% chance[13]) located in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye as an orang point of light at an apparent magnitude of 5.64.[3] Based on parallax measurements from Gaia DR3, the system is estimated to be 470 light years away from Earth.[2] It appears to be rapidly receding from the Sun, having a heliocentric radial velocity of 58.6 km/s.[6]
The visible component is an evolved, RGB star with a stellar classification of K2 III.[4] It has 1.74 times the mass of the Sun and is said to be 3.55 billion years old.[7] At this age, the object has expanded to 24.7 times the radius of the Sun[8] and now radiates nearly 200 times the luminosity of the Sun[9] from its enlarged photosphere at an effective temperature of 4,479 K.[8] HD 58425 A has an iron abundance only 38% that of the Sun's,[10] making it metal deficient.
