HD 28454
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 27m 05.96464s |
| Declination | −46° 56′ 50.9697″ |
| Apparent magnitude (V) | 6.10 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F5.5 V |
| U−B color index | −0.07 |
| B−V color index | +0.48 |
| Astrometry | |
| Radial velocity (Rv) | 15±2.4 km/s |
| Proper motion (μ) | RA: +63.853 mas/yr Dec.: −270.620 mas/yr |
| Parallax (π) | 30.6049±0.0259 mas |
| Distance | 106.57 ± 0.09 ly (32.67 ± 0.03 pc) |
| Absolute magnitude (MV) | +3.5 |
| Details | |
| Mass | 1.24 M☉ |
| Radius | 1.42±0.06 R☉ |
| Luminosity | 3.26±0.01 L☉ |
| Surface gravity (log g) | 4.30 ± 0.14 cgs |
| Temperature | 6,468±80 K |
| Metallicity [Fe/H] | −0.25±0.10 dex |
| Rotation | 14.810 days |
| Rotational velocity (v sin i) | 8 km/s |
| Age | 1.61 Gyr |
| Other designations | |
| 3 G. Caeli[13], CD−47°1383, CPD−47°441, FK5 2329, GC 5428, HD 28454, HIP 20781, HR 1418, SAO 216809 | |
| Database references | |
| SIMBAD | data |
HD 28454, also known as HR 1418, is a solitary, yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.1, making it faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of about 107 light years based on parallax measurements of Gaia DR3 but is receding with a heliocentric radial velocity of 15 km/s.
This star was designated Chi Horologii by Johann Elert Bode in his 1801 Uranographia, but this is now no longer used.
HD 28454 is an ordinary F-type main sequence star with a stellar classification of F5.5 V. It has 1.21 times the mass of the Sun and 1.42 times its radius. It radiates 3.26 times the luminosity of the Sun from its photosphere at an effective temperature of 6,468 K. HD 28454 is estimated to be 1.61 billion years, and spins modestly with a projected rotational velocity of 8 km/s. The star is metal deficient, having an iron abundance 56% that of the Sun's.
A candidate extrasolar planet has been detected from Gaia DR3 astrometry. It has a minimum mass of 8 MJ and a minimum semi-major axis of 2.27 astronomical units.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (unconfirmed) | ≥8.0 MJ | ≥2.27 | — | — | — | — |