12313+5507 BAG 50 (NO UMa)
12h 31m 18.92s +55° 07' 07.6" P.A. 255.00 sep 0.1 mag 8.20,10.60 Sp K2V+K6.5V dist. 25.1 pc (81.88 l.y.)
| Coord 2000 |
12313+5507 |
|
Discov num |
BAG 50 |
|
Comp |
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Coord arcsec 2000 |
12 31 18.92 +55 07 07.6 |
|
| Date first |
2002 |
|
Date last |
2019 |
|
Obs |
29 |
|
| Pa first |
320 |
|
Pa last |
255 |
|
P.A. Now (θ) |
255° |
|
| Sep first |
0.7 |
|
Sep last |
0.079 |
|
Sep. Now (ρ) |
0.079" |
|
| Mag pri |
8.20 |
|
Mag sec |
10.60 |
|
delta mag (ΔM) |
2.4 |
|
Spectral class |
K2V+K6.5V (yellow-orange/yellow-orange) |
|
| Pri motion ra |
+107 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
|
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
| Var name |
NO UMa |
|
Constellation |
Ursa Major |
|
SAO |
28414 |
|
HIP |
61100 |
|
| Tycho2 |
3844-00102-1 |
|
Gaia DR2 |
1571145907856592768 |
|
HD |
109011 |
|
GL |
GJ 1160 |
|
| BD |
BD+55 1536 |
|
Distance |
25.1 |
|
Distance ly |
81.88 |
|
ORBITAL ELEMENTS
| Period (P) | 3.514y | ± 0.002 |
Periastron (T) | 2013.55y | ± 0.003 |
Semi-major axis (a) | 102.3m | ± 0.5 |
| Eccentricity (e) | 0.507 | ± 0.003 |
Inclination (i) | 58.6° | ± 0.3 |
Longitude of periastron (ω) | 244.5° | ± 0.4 |
| Node (Ω) | 177.6° | ± 0.4 |
Notes | n | |
Reference | Mit2020 | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
175.7 |
0.094 |
| 2001 |
213.9 |
0.109 |
| 2002 |
280.1 |
0.071 |
| 2003 |
41.5 |
0.033 |
| 2004 |
195.3 |
0.118 |
| 2005 |
238.3 |
0.087 |
| 2006 |
326.6 |
0.073 |
| 2007 |
174.1 |
0.090 |
| 2008 |
212.8 |
0.110 |
| 2009 |
277.4 |
0.071 |
| 2010 |
30.8 |
0.038 |
| 2011 |
194.4 |
0.118 |
| 2012 |
236.6 |
0.089 |
| 2013 |
324.1 |
0.073 |
| 2014 |
172.4 |
0.087 |
| 2015 |
211.7 |
0.111 |
| 2016 |
274.8 |
0.071 |
| 2017 |
22.5 |
0.043 |
| 2018 |
193.4 |
0.118 |
| 2019 |
234.9 |
0.090 |
| 2020 |
321.5 |
0.072 |
| 2021 |
170.6 |
0.083 |
| 2022 |
210.6 |
0.112 |
| 2023 |
272.2 |
0.072 |
| 2024 |
15.8 |
0.047 |
| 2025 |
192.4 |
0.117 |
| 2026 |
233.2 |
0.091 |
| 2027 |
318.9 |
0.072 |
| 2028 |
168.5 |
0.080 |
| 2029 |
209.5 |
0.113 |
| 2030 |
269.6 |
0.073 |
|
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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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