HD 32820
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Caelum[1] |
| Right ascension | 05h 03m 53.95236s[2] |
| Declination | −41° 44′ 41.8259″[2] |
| Apparent magnitude (V) | 6.30±0.01[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F8 V[4][5] |
| U−B color index | +0.04[6] |
| B−V color index | +0.53[6] |
| Astrometry | |
| Radial velocity (Rv) | 29.8±0.9[7] km/s |
| Proper motion (μ) | RA: +22.005 mas/yr[2] Dec.: +158.650 mas/yr[2] |
| Parallax (π) | 31.6204±0.0176 mas[2] |
| Distance | 103.15 ± 0.06 ly (31.63 ± 0.02 pc) |
| Absolute magnitude (MV) | +3.79[1] |
| Details | |
| Mass | 1.25[8] M☉ |
| Radius | 1.33±0.03[9] R☉ |
| Luminosity | 2.44±0.01[2] L☉ |
| Surface gravity (log g) | 4.25[10] cgs |
| Temperature | 6,227±68[9] K |
| Metallicity [Fe/H] | −0.04[11] dex |
| Rotational velocity (v sin i) | 8[12] km/s |
| Age | 3.46[11] Gyr |
| Other designations | |
| 27 G. Caeli[13], CD−41°1690, CPD−41°621, GC 6204, HD 32820, HIP 23555, HR 1651, SAO 217153[14] | |
| Database references | |
| SIMBAD | data |
HD 32820, also known as HR 1651, is a yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.3,[3] placing it near the limit of naked eye visibility. The object is located relatively close at a distance of 103 light years based on parallax measurements from Gaia DR3,[2] but is receding with a heliocentric radial velocity of 29.8 km/s.[7]
HD 32820 has a stellar classification of F8 V,[4][5] indicating that it is an ordinary F-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 125% the mass of the Sun[8] and 133% of its radius.[9] It radiates double the luminosity of the Sun[2] from its photosphere at an effective temperature of 6,227 K.[9] HD 32820 is said to be 3.46 billion years old,[11] slightly younger than the Sun, and has a near solar iron abundance.[11] The star spins modestly with a projected rotational velocity of 8 km/s[12] and is chromospherically inactive[15]
