11551+4629 A 1777 AB

 
 
11h 55m 05.74s +46° 28' 36.6" P.A. 358.00 sep 0.3 mag 6.50,9.00 Sp A3Vn dist. 211.86 pc (691.09 l.y.)
 
 
Coord 2000 11551+4629 Discov num A  1777 Comp AB Coord arcsec 2000 11 55 05.74 +46 28 36.6
Date first 1908 Date last 2019 Obs 39
Pa first 3 Pa last 358.1 P.A. Now (θ) 358.1°
Sep first 0.3 Sep last 0.25 Sep. Now (ρ) 0.25"
Mag pri 6.50 Mag sec 9.00 delta mag (ΔM) 2.5 Spectral class A3Vn (white)
Pri motion ra +003 Sec motion ra
Pri motion dec +000 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
11551+4629 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 43945 11 55 06 +46 28 37 A 1777 AB 2019 39 358 0.3 6.50 9.00 2.50 Y <===
Show 65 UMa 43945 11 55 06 +46 28 37 STF 1579 AB,C 2021 87 44 3.7 6.68 8.32 1.64
Show 43945 11 55 06 +46 28 37 STF 1579 AB,D 2021 73 114 62.9 6.68 6.97 0.29
Show 43946 11 55 06 +46 28 40 STF 1579 CD 2018 14 117 61.9 8.32 6.97 1.35
Show 43946 11 55 11 +46 28 11 BAG 46 Da,Db 2018 4 326 0.1 7.10 9.20 2.10
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DN UMa Constellation Ursa Major SAO 43945 HIP 58112
Tycho2 3452-02143-2 Gaia DR2 774274752546451840 HD 103483 HR 4560
GC 16296 ADS 8347 BD BD+47 1913 Flamsteed 65 Ursae Majoris
Flamsteed name 65 UMa Distance 211.86 Distance ly 691.09
 
 
ORBITAL ELEMENTS
 
 
Period (P)118.209y± 0.69 Periastron (T)47515.9d (1988.97y)± 126.8 Semi-major axis (a)0.2082a± 0.0097
Eccentricity (e)0.504± 0.006 Inclination (i)38.1°± 2.4 Longitude of periastron (ω)202.7°± 1.3
Node (Ω)2.1°± 4.2 Notesn ReferenceZas2012b
Equinox Last observation2007 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 297.9 0.125
2001 303.3 0.132
2002 308.2 0.140
2003 312.5 0.148
2004 316.4 0.156
2005 319.9 0.163
2006 323.2 0.171
2007 326.1 0.178
2008 328.8 0.186
2009 331.3 0.193
2010 333.6 0.200
2011 335.8 0.207
2012 337.8 0.213
2013 339.7 0.220
2014 341.6 0.226
2015 343.3 0.231
2016 344.9 0.237
2017 346.5 0.242
2018 348.0 0.247
2019 349.4 0.252
2020 350.8 0.257
2021 352.1 0.261
2022 353.4 0.266
2023 354.7 0.270
2024 355.9 0.273
2025 357.1 0.277
2026 358.2 0.280
2027 359.4 0.283
2028 0.5 0.286
2029 1.5 0.289
2030 2.6 0.291


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



 
 


wds11551%2B4629a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier11551+4629 A 1777 A
coord_arcsec_2000115505.74+462836.6
Period (P)641.5d± 16.7 Periastron (T)49615.4d (1994.718y)± 38.9 Semi-major axis (a)11m
Eccentricity (e)0.169± 0.048 Inclination (i)47° Longitude of periastron (ω)± 15.2
Node (Ω) Notesn ReferenceZas2012b
Equinox Last observation2007 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 2.6 0.009
2001-01-01 194.0 0.012
2002-01-01 61.8 0.007
2003-01-01 229.5 0.009
2004-01-01 130.6 0.009
2005-01-01 298.3 0.007
2006-01-01 166.0 0.012
2007-01-01 357.5 0.009
2008-01-01 191.2 0.012
2009-01-01 54.1 0.008
2010-01-01 224.5 0.009
2011-01-01 125.2 0.009
2012-01-01 290.3 0.007
2013-01-01 163.2 0.012
2014-01-01 352.4 0.009
2015-01-01 188.5 0.013
2016-01-01 46.8 0.008
2017-01-01 219.9 0.010
2018-01-01 119.3 0.008
2019-01-01 282.1 0.007
2020-01-01 160.2 0.012
2021-01-01 347.2 0.009
2022-01-01 185.9 0.013
2023-01-01 39.9 0.008
2024-01-01 215.7 0.010
2025-01-01 112.9 0.008
2026-01-01 273.9 0.007
2027-01-01 157.1 0.012
2028-01-01 341.8 0.009
2029-01-01 183.3 0.013
2030-01-01 33.3 0.008


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



 
 


wds11551%2B4629f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic