10281+4847 KUI 50
10h 28m 03.88s +48° 47' 05.6" P.A. 23.00 sep 3.9 mag 6.40,12.60 Sp F9V dist. 22.91 pc (74.73 l.y.)
| Coord 2000 |
10281+4847 |
|
Discov num |
KUI 50 |
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Comp |
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Coord arcsec 2000 |
10 28 03.88 +48 47 05.6 |
|
| Date first |
1939 |
|
Date last |
2018 |
|
Obs |
22 |
|
| Pa first |
15 |
|
Pa last |
22.7 |
|
P.A. Now (θ) |
22.7° |
|
| Sep first |
4.5 |
|
Sep last |
3.882 |
|
Sep. Now (ρ) |
3.882" |
|
| Mag pri |
6.40 |
|
Mag sec |
12.60 |
|
delta mag (ΔM) |
6.2 |
|
Spectral class |
F9V (yellow-white) |
|
| Pri motion ra |
+083 |
|
Sec motion ra |
+083 |
|
| Pri motion dec |
-882 |
|
Sec motion dec |
-882 |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ursa Major |
|
SAO |
43351 |
|
HIP |
51248 |
|
Tycho2 |
3438-00194-1 |
|
| HD |
90508 |
|
HR |
4098 |
|
GC |
14357 |
|
GL |
Gl 392A |
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| BD |
BD+49 1961 |
|
Distance |
22.91 |
|
Distance ly |
74.73 |
|
ORBITAL ELEMENTS
| Period (P) | 80.5919y | ± 3.4409 |
Periastron (T) | 1981.1102y | ± 5.1743 |
Semi-major axis (a) | 8.4573a | ± 3.32265 |
| Eccentricity (e) | 0.99 | ± 0.02207 |
Inclination (i) | 95.283° | ± 2.425 |
Longitude of periastron (ω) | 284.665° | ± 7.248 |
| Node (Ω) | 178.811° | ± 7.955 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2012 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
24.7 |
2.840 |
| 2001 |
24.2 |
2.954 |
| 2002 |
23.7 |
3.064 |
| 2003 |
23.3 |
3.171 |
| 2004 |
22.9 |
3.273 |
| 2005 |
22.5 |
3.373 |
| 2006 |
22.1 |
3.468 |
| 2007 |
21.8 |
3.560 |
| 2008 |
21.5 |
3.649 |
| 2009 |
21.2 |
3.735 |
| 2010 |
20.9 |
3.817 |
| 2011 |
20.6 |
3.895 |
| 2012 |
20.3 |
3.971 |
| 2013 |
20.1 |
4.043 |
| 2014 |
19.8 |
4.111 |
| 2015 |
19.6 |
4.177 |
| 2016 |
19.4 |
4.239 |
| 2017 |
19.1 |
4.298 |
| 2018 |
18.9 |
4.353 |
| 2019 |
18.7 |
4.405 |
| 2020 |
18.5 |
4.454 |
| 2021 |
18.3 |
4.499 |
| 2022 |
18.1 |
4.541 |
| 2023 |
17.9 |
4.580 |
| 2024 |
17.7 |
4.615 |
| 2025 |
17.5 |
4.646 |
| 2026 |
17.3 |
4.674 |
| 2027 |
17.1 |
4.699 |
| 2028 |
16.9 |
4.719 |
| 2029 |
16.7 |
4.736 |
| 2030 |
16.5 |
4.749 |
|
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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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