09036+4709 A 1585 (Alkaphrah)
09h 03m 37.56s +47° 09' 24.0" P.A. 278.00 sep 0.3 mag 4.16,4.54 Sp A1V dist. 109.89 pc (358.46 l.y.)
Coord 2000 |
09036+4709 |
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Discov num |
A 1585 |
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Comp |
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Coord arcsec 2000 |
09 03 37.56 +47 09 24.0 |
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Date first |
1907 |
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Date last |
2019 |
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Obs |
206 |
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Pa first |
283 |
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Pa last |
277.7 |
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P.A. Now (θ) |
275.6° |
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Sep first |
0.2 |
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Sep last |
0.27 |
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Sep. Now (ρ) |
0.213" |
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Mag pri |
4.16 |
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Mag sec |
4.54 |
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delta mag (ΔM) |
0.38 |
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Spectral class |
A1V (white) |
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Pri motion ra |
-033 |
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Sec motion ra |
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Pri motion dec |
-054 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Common name |
Alkaphrah |
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Var name |
NSV4357 UMa |
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Constellation |
Ursa Major |
|
SAO |
42661 |
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HIP |
44471 |
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Tycho2 |
3424-01626-1 |
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HD |
77327 |
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HR |
3594 |
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GC |
12503 |
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ADS |
7158 |
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BD |
BD+47 1633 |
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Bayer |
Kappa Ursae Majoris |
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Bayer name |
Kap UMa |
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Flamsteed |
12 Ursae Majoris |
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Flamsteed name |
12 UMa |
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FK5 |
341 |
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Distance |
109.89 |
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Distance ly |
358.46 |
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Bayer greek |
κ UMa |
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Other names |
Talitha australis, Alkafzah, El Koprah |
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Meaning |
leap (of the gazelle) |
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ORBITAL ELEMENTS
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.) |
label |
theta |
rho |
2000 |
18.4 |
0.043 |
2001 |
340.3 |
0.060 |
2002 |
322.3 |
0.087 |
2003 |
313.0 |
0.115 |
2004 |
307.4 |
0.141 |
2005 |
303.4 |
0.166 |
2006 |
300.5 |
0.188 |
2007 |
298.1 |
0.208 |
2008 |
296.2 |
0.225 |
2009 |
294.5 |
0.240 |
2010 |
293.0 |
0.253 |
2011 |
291.6 |
0.264 |
2012 |
290.3 |
0.272 |
2013 |
289.1 |
0.278 |
2014 |
287.9 |
0.281 |
2015 |
286.7 |
0.283 |
2016 |
285.6 |
0.282 |
2017 |
284.4 |
0.280 |
2018 |
283.2 |
0.274 |
2019 |
282.0 |
0.267 |
2020 |
280.6 |
0.257 |
2021 |
279.1 |
0.245 |
2022 |
277.5 |
0.230 |
2023 |
275.6 |
0.213 |
2024 |
273.4 |
0.192 |
2025 |
270.6 |
0.169 |
2026 |
266.8 |
0.144 |
2027 |
261.2 |
0.115 |
2028 |
251.8 |
0.085 |
2029 |
231.7 |
0.055 |
2030 |
184.3 |
0.039 |
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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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