HD 80606 and HD 80607
HD 80606 and HD 80607 are two stars comprising a binary star system. They are approximately 217 light-years away in the constellation of Ursa Major. Both stars orbit each other at an average distance of 1,200 astronomical units. The binary system is listed as Struve 1341 in the Struve Catalogue of Double Stars; however, this designation is not in wide use and the system is usually referred to by the HD designations of its constituent stars. An extrasolar planet has been confirmed to orbit HD 80606 in a highly elliptical orbit.
The HD 80606/7 binary star system on GALEX sky survey | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ursa Major |
| HD 80606 | |
| Right ascension | 09h 22m 37.5769s |
| Declination | +50° 36′ 13.430″ |
| Apparent magnitude (V) | +9.00 |
| HD 80607 | |
| Right ascension | 09h 22m 39.7369s |
| Declination | +50° 36′ 13.945″ |
| Apparent magnitude (V) | +9.090 |
| Characteristics | |
| HD 80606 | |
| Spectral type | G5 |
| B−V color index | +0.765 |
| HD 80607 | |
| Spectral type | G5 |
| B−V color index | +0.828 |
| Astrometry | |
| HD 80606 | |
| Radial velocity (Rv) | 3.6 km/s |
| Proper motion (μ) | RA: 55.933 mas/yr Dec.: 10.340 mas/yr |
| Parallax (π) | 15.0153 ± 0.0361 mas |
| Distance | 217.2 ± 0.5 ly (66.6 ± 0.2 pc) |
| HD 80607 | |
| Radial velocity (Rv) | 3.3 km/s |
| Proper motion (μ) | RA: 52.624 mas/yr Dec.: 9.945 mas/yr |
| Parallax (π) | 15.0474 ± 0.0341 mas |
| Distance | 216.8 ± 0.5 ly (66.5 ± 0.2 pc) |
| Details | |
| HD 80606 | |
| Surface gravity (log g) | 4.50 ± 0.20 cgs |
| Temperature | 5,645 ± 45 K |
| Metallicity [Fe/H] | 0.43 ± 0.06 dex |
| Rotational velocity (v sin i) | 0.9 ± 0.6 km/s |
| HD 80607 | |
| Surface gravity (log g) | 4.52 ± 0.15 cgs |
| Temperature | 5,555 ± 45 K |
| Metallicity [Fe/H] | 0.38 ± 0.06 dex |
| Rotational velocity (v sin i) | 1.4 ± 0.4 km/s |
| Other designations | |
| HD 80606: HIP 45982, SAO 27230 | |
| HD 80607: HIP 45983 | |
| Database references | |
| SIMBAD | HD 80606 |
| HD 80607 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.