12313+5507 BAG  50 (NO UMa)

 
 
12h 31m 18.92s +55 07' 07.6" P.A. 14.3 sep 0.12 mag 8.21, Sp K2V 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
2013
Obs
12
Pa first
320
Pa last
172
P.A. Now (θ)
14.3°
Sep first
0.7
Sep last
0.1
Sep. Now (ρ)
0.12"
Mag pri
8.21
Mag sec
delta mag (ΔM)
Spectral class
K2V (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
 
 
Precise pa
171.8
Precise sep
0.086
Var name
NO UMa
Cdsa2 id
BAG 50
Constellation
Ursa Major
SAO
28414
HIP
61100
Tycho2
3844-00102-1
HD
109011
GL
GJ 1160
BD
BD+55 1536
Ra deg
12.521922222222223
De deg
55.11877777777778
Distance
25.1
Distance ly
81.88
last precise pa
171.8
last precise sep
0.086
 
 
ORBITAL ELEMENTS
 
 
Period (P)1285.31d (3.52y)± 0.27 Periastron (T)56492.13d (2013.546y)± 0.35 Semi-major axis (a)102.19m
Eccentricity (e)0.5113± 0.00093 Inclination (i)58.63°± 0.46 Longitude of periastron (ω)244.5°± 0.16
Node (Ω)355.83°± 0.24 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000-01-01 0.096 355.5
2001-01-01 0.108 33.1
2002-01-01 0.070 99.8
2003-01-01 0.030 228.9
2004-01-01 0.118 14.4
2005-01-01 0.087 57.4
2006-01-01 0.073 145.7
2007-01-01 0.092 353.4
2008-01-01 0.110 31.5
2009-01-01 0.071 96.2
2010-01-01 0.036 212.1
2011-01-01 0.118 13.0
2012-01-01 0.088 55.1
2013-01-01 0.072 142.3
2014-01-01 0.088 351.2
2015-01-01 0.111 30.0
2016-01-01 0.071 92.6
2017-01-01 0.043 200.2
2018-01-01 0.118 11.7
2019-01-01 0.090 52.8
2020-01-01 0.072 138.8
2021-01-01 0.083 348.7
2022-01-01 0.112 28.6
2023-01-01 0.072 89.0
2024-01-01 0.049 191.4
2025-01-01 0.117 10.4
2026-01-01 0.092 50.6
2027-01-01 0.072 135.2
2028-01-01 0.077 345.8
2029-01-01 0.113 27.2
2030-01-01 0.073 85.6

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds12313%2B5507c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12313+5507 BAG 50 2006 8 5 0.1 8.21   K2V N 123118.92+550707.6
12313+5507 BAG 50 2013 12 172 0.1 8.21   K2V NO 123118.92+550707.6

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