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 |
|
|
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 |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|