HD 145377
HD 145377 is a G type star that is a little hotter and a little larger than the Sun. It is located in the southern constellation Scorpius. It is an 8th-magnitude star at a distance of about 180 light years from Earth.[1][2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 11m 36.445s[1] |
| Declination | −27° 04′ 41.43″[1] |
| Apparent magnitude (V) | 8.13 |
| Characteristics | |
| Spectral type | G3V[2] |
| Apparent magnitude (B) | ~8.71[2] |
| Apparent magnitude (J) | 7.014 ±0.018[2] |
| Apparent magnitude (H) | 6.797 ±0.040[2] |
| Apparent magnitude (K) | 6.706 ±0.018[2] |
| Astrometry | |
| Radial velocity (Rv) | 11.1 ± 0.2 km/s |
| Proper motion (μ) | RA: 20.23 ± 1.14[1] mas/yr Dec.: 13.61 ± 0.66[1] mas/yr |
| Parallax (π) | 18.17 ± 0.94[1] mas |
| Distance | 180 ± 9 ly (55 ± 3 pc) |
| Details | |
| Mass | 1.12 ± 0.03 M☉ |
| Radius | 1.14 R☉ |
| Temperature | 6046 ± 15 K |
| Metallicity [Fe/H] | 0.12 ± 0.01 dex |
| Age | 1.3 ± 1 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
Planetary system
In October 2008 an extrasolar planet, HD 145377 b, was reported to be orbiting this star. This object was detected using the radial velocity method by search programs conducted using the HARPS spectrograph.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥5.76 ± 0.1 MJ | 0.45 ± 0.004 | 103.95 ± 0.13 | 0.307 ± 0.017 | — | — |
gollark: That happened to me too. I wonder what Discord *did*.
gollark: Well, not sci-fi level, but definitely nanotechnology and pretty advanced.
gollark: Lots of modern and not-that-modern technology is very impressive if you consider how complex it is. Like how CPUs are basically insanely advanced nanotechnology which they manufacture at the scale of, well, not individual atoms, but smallish groups of atoms, mass-produced and sold very cheaply.
gollark: So low-level architecture then.
gollark: Wait, do you mean architecture or process?
See also
- List of extrasolar planets
References
- van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- "SIMBAD query result: HIP 79346 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
- Moutou, C.; et al. (2009). "The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950". Astronomy and Astrophysics. 496 (2): 513–519. arXiv:0810.4662. Bibcode:2009A&A...496..513M. doi:10.1051/0004-6361:200810941.
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