HR 3724
From Infogalactic: the planetary knowledge core
(Redirected from HD 81009)
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Hydra[1] |
| Right ascension | 09h 22m 50.856s[2] |
| Declination | −09° 50′ 19.66″[2] |
| Characteristics | |
| Astrometry | |
| Proper motion (μ) | RA: −27.94 ± 0.61[2] mas/yr Dec.: −13.01 ± 0.36[2] mas/yr |
| Parallax (π) | 6.92 ± 0.61[2] mas |
| Distance | 470 ± 40 ly (140 ± 10 pc) |
| Orbit[3] | |
| Companion | KU Hydrae B |
| Period (P) | 53.199 ± 0.193 yr |
| Semi-major axis (a) | 0.165 ± 0.011" |
| Eccentricity (e) | 0.038 ± 0.037 |
| Inclination (i) | 67.1 ± 4.1° |
| Longitude of the node (Ω) | 23.7 ± 3.6° |
| Periastron epoch (T) | 1957.346 ± 0.572 |
| Other designations | |
HR 3724 is a binary star in the constellation Hydra.
This star was discovered to be a visual binary star by Robert Grant Aitken in 1906 and was given the double star designation A 1342.[5] Additional measurements of the position angle and angular separation showed a rapid orbital motion.[6]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found. Vizier query form
- ↑ 2.0 2.1 2.2 2.3 2.4 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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