Coord 2000 | 10279+3642 | Discov num | HU 879 | Comp | Coord arcsec 2000 | 10 27 53.09 +36 42 26.9 | |||||
Date first | 1904 | Date last | 2018 | Obs | 172 | ||||||
Pa first | 231 | Pa last | 226.3 | P.A. Now (θ) | 229.6° | ||||||
Sep first | 0.5 | Sep last | 0.51 | Sep. Now (ρ) | 0.428" | ||||||
Mag pri | 4.62 | Mag sec | 6.04 | delta mag (ΔM) | 1.42 | Spectral class | G8III (yellow) | ||||
Pri motion ra | -118 | Sec motion ra | |||||||||
Pri motion dec | -101 | Sec motion dec | |||||||||
Notes | N O (See Notes, Orbital solution) |
Name | Bet LMi | Constellation | Leo Minor | SAO | 62053 | HIP | 51233 | ||||
Tycho2 | 2517-01209-1 | Gaia DR2 | 754644862217331584 | HD | 90537 | HR | 4100 | ||||
GC | 14358 | ADS | 7780 | BD | BD+37 2080 | Bayer | Beta Leonis Minoris | ||||
Bayer name | Bet LMi | Flamsteed | 31 Leonis Minoris | Flamsteed name | 31 LMi | FK5 | 390 | ||||
Distance | 47.19 | Distance ly | 153.93 | Bayer greek | β LMi |
Period (P) | 13965d (38.23y) | ± 40 | Periastron (T) | 51411.1d (1999.635y) | ± 4.8 | Semi-major axis (a) | 0.3782a | ± 0.0007 |
Eccentricity (e) | 0.68 | ± 0.002 | Inclination (i) | 81.4° | ± 0.1 | Longitude of periastron (ω) | 35.7° | ± 0.12 |
Node (Ω) | 40.7° | ± 0.1 | Notes | n | Reference | WaX2020 | ||
Equinox | Last observation | Grade | 2 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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