HD 145377
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 11m 36.44650s |
| Declination | −27° 04′ 41.4338″ |
| Apparent magnitude (V) | 8.10 |
| Characteristics | |
| Spectral type | G3V |
| Apparent magnitude (B) | 8.73 |
| Apparent magnitude (J) | 7.014±0.018 |
| Apparent magnitude (H) | 6.797±0.040 |
| Apparent magnitude (K) | 6.706±0.018 |
| B−V color index | 0.63 |
| Astrometry | |
| Radial velocity (Rv) | +11.610±0.0011 km/s |
| Proper motion (μ) | RA: +21.786 mas/yr Dec.: +13.039 mas/yr |
| Parallax (π) | 18.6669±0.0498 mas |
| Distance | 174.7 ± 0.5 ly (53.6 ± 0.1 pc) |
| Absolute magnitude (MV) | 4.31 |
| Details | |
| Mass | 1.129±0.022 M☉ |
| Radius | 1.05±0.02 R☉ 1.12±0.03 R☉ |
| Luminosity | 1.56±0.17 L☉ 1.43±0.04 L☉ |
| Surface gravity (log g) | 4.38±0.03 cgs |
| Temperature | 6,046±15 K |
| Metallicity [Fe/H] | 0.12±0.01 dex |
| Rotation | 12 days |
| Rotational velocity (v sin i) | 3.85 km/s |
| Age | 0.857±0.732 Gyr 2.90±1.20 Gyr |
| Other designations | |
| CD−26°11249, HD 145377, HIP 79346, SAO 184208, PPM 265238, GSC 06801-00585, 2MASS J16113644-2704414 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 145377 is a star in the southern constellation Scorpius. It has an apparent visual magnitude of 8.10 and can be viewed with a small telescope. The star is located at a distance of 175 light years from the Sun based on parallax, and it is drifting further away with a radial velocity of +11.6. The absolute magnitude of this star is 4.31, indicating it would be visible to the naked eye if it were at a distance of 10 parsecs.
This is an ordinary G-type main-sequence star with a stellar classification of G3V, which indicates it is undergoing core hydrogen fusion. It is 5–12% larger and 13% more massive than the Sun. It may be younger than the Sun, with age estimates in the range of 1–3 billion years. The star is spinning with a projected rotational velocity of 3.85 km/s, giving it a rotation period of ~12 days. The abundance of elements more massive than helium – what astronomers term the star's metallicity – is ~31% higher than in the Sun. The star is radiating around 43% to 56% of the luminosity of the Sun from its photosphere at an effective temperature of 6,046 K.