Coord 2000 | 09036+4709 | Discov num | A 1585 | Comp | Coord arcsec 2000 | 09 03 37.56 +47 09 24.0 | |||||
Date first | 1907 | Date last | 2019 | Obs | 206 | ||||||
Pa first | 283 | Pa last | 277.7 | P.A. Now (θ) | 275.6° | ||||||
Sep first | 0.2 | Sep last | 0.27 | Sep. Now (ρ) | 0.213" | ||||||
Mag pri | 4.16 | Mag sec | 4.54 | delta mag (ΔM) | 0.38 | Spectral class | A1V (white) | ||||
Pri motion ra | -033 | Sec motion ra | |||||||||
Pri motion dec | -054 | Sec motion dec | |||||||||
Notes | N O (See Notes, Orbital solution) |
Common name | Alkaphrah | Var name | NSV4357 UMa | Constellation | Ursa Major | SAO | 42661 | ||||
HIP | 44471 | Tycho2 | 3424-01626-1 | HD | 77327 | HR | 3594 | ||||
GC | 12503 | ADS | 7158 | BD | BD+47 1633 | Bayer | Kappa Ursae Majoris | ||||
Bayer name | Kap UMa | Flamsteed | 12 Ursae Majoris | Flamsteed name | 12 UMa | FK5 | 341 | ||||
Distance | 109.89 | Distance ly | 358.46 | Bayer greek | κ UMa |
Other names | Talitha australis, Alkafzah, El Koprah |
Meaning | leap (of the gazelle) |
Period (P) | 13007.2d (35.61y) | ± 9.7 | Periastron (T) | 50404m (1996.879y) | ± 12 | Semi-major axis (a) | 0.18194a | ± 0.00025 |
Eccentricity (e) | 0.5584 | ± 0.0015 | Inclination (i) | 109.41° | ± 0.066 | Longitude of periastron (ω) | 355.63° | ± 0.36 |
Node (Ω) | 105.641° | ± 0.08 | Notes | n | Reference | Mut2010b | ||
Equinox | 2000 | Last observation | 2008 | 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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