11191+3811 CHR 133AB (55 UMa)

 
 
11h 19m 07.94s +38 11' 08.6" P.A. 102.9 sep 0.07 mag 4.78,5.30 Sp A2V dist. 58.82 pc (191.87 l.y.)
 
 
Coord 2000
11191+3811
Discov num
CHR 133
Comp
AB
Coord arcsec 2000
11 19 07.94 +38 11 08.6
Date first
1987
Date last
2007
Obs
16
Pa first
145
Pa last
127
P.A. Now (θ)
102.9°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.07"
Mag pri
4.78
Mag sec
5.30
delta mag (ΔM)
0.52
Spectral class
A2V (white)
Pri motion ra
-057
Sec motion ra
Pri motion dec
-068
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
11191+3811 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 55 UMa 62491 11191+3811 CHR 133 AB 1987 2007 16 103 0.1 4.78 5.30 0.52 Y <===
Show 62491 11191+3811 DRS 47 AC 2010 2010 1 145 0.9 4.50 10.10 5.60
Show 62491 11191+3811 DRS 47 AD 1991 2002 4 128 499.7 4.77 7.25 2.48
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
126.6
Precise sep
0.083
Name
55 UMa
Constellation
Ursa Major
SAO
62491
HIP
55266
HD
98353
HR
4380
GC
15558
BD
BD+38 2225
Flamsteed
55 Ursae Majoris
Flamsteed name
55 UMa
Distance
58.82
Distance ly
191.87
last precise pa
126.6
last precise sep
0.083
 
 
ORBITAL ELEMENTS
 
 
Period (P)1872.7d (5.13y)± 7.4 Periastron (T)48805d (1992.499y)± 18 Semi-major axis (a)0.0913a± 0.0009
Eccentricity (e)0.126± 0.008 Inclination (i)64.8°± 0.8 Longitude of periastron (ω)43.9°± 3.7
Node (Ω)130°± 0.8 Note Grade2(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000-01-01 0.089 325.7
2001-01-01 0.042 39.3
2002-01-01 0.081 120.4
2003-01-01 0.045 174.1
2004-01-01 0.079 293.9
2005-01-01 0.093 321.9
2006-01-01 0.044 22.1
2007-01-01 0.077 115.3
2008-01-01 0.054 161.1
2009-01-01 0.071 288.3
2010-01-01 0.097 318.5
2011-01-01 0.049 7.5
2012-01-01 0.071 109.6
2013-01-01 0.063 151.8
2014-01-01 0.062 281.2
2015-01-01 0.099 315.2
2016-01-01 0.056 356.0
2017-01-01 0.065 102.9
2018-01-01 0.070 144.7
2019-01-01 0.052 271.5
2020-01-01 0.099 312.0
2021-01-01 0.063 347.0
2022-01-01 0.058 94.6
2023-01-01 0.077 138.9
2024-01-01 0.043 257.6
2025-01-01 0.098 308.8
2026-01-01 0.070 339.9
2027-01-01 0.052 84.1
2028-01-01 0.081 133.8
2029-01-01 0.037 237.7
2030-01-01 0.096 305.4

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

grafico orbita





wds11191%2B3811a.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
11191+3811 CHR 133 AB 2007 16 127 0.1 4.78 5.30 A2V NOD 111907.94+381108.6

If you need more information about this double, apply for a data request form to the WDS.