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Current system
09252+4606
HDS 1353
HD 81105


Nearby doubles
21' : 09257+4626
LDS3889

24' : 09266+4547
CBL 278

31' : 09224+4616
A 1758

48' : 09287+4536
S 598AB
Intercrus

48' : 09229+4647
KPP3219

57' : 09307+4604
A 1764

58' : 09292+4526
TDS 536

74' : 09322+4557
TDS6633

75' : 09183+4622
LDS3870AB

76' : 09277+4456
A 1762

78' : 09177+4612
JNN 68

80' : 09270+4449
TDS6563

85' : 09275+4445
DAM1621

86' : 09237+4441
A 1759

87' : 09307+4502
FLA 1

92' : 09340+4604
TDS6653

94' : 09243+4739
TDS6538

98' : 09162+4540
COU2688

102' : 09252+4424
OSW 46

105' : 09309+4441
STF1358

106' : 09239+4420
HEI 351

108' : 09167+4709
LDS3867

109' : 09190+4438
ES 1148

111' : 09242+4756
ES 912

112' : 09344+4704
COU2500

112' : 09289+4751
CVR 533



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

09252+4606 HDS 1353 (HD 81105)

 
 
09h 25m 10.78s +46° 05' 53.6" P.A. 167.00 sep 0.4 mag 9.36,11.49 Sp K5V+M1.5V dist. 25.71 pc (83.87 l.y.)
 
 
Coord 2000 09252+4606 Discov num HDS1353 Comp Coord arcsec 2000 09 25 10.78 +46 05 53.6
Date first 1991 Date last 2019 Obs 31
Pa first 304 Pa last 166.6 P.A. Now (θ) 166.6°
Sep first 0.3 Sep last 0.41 Sep. Now (ρ) 0.41"
Mag pri 9.36 Mag sec 11.49 delta mag (ΔM) 2.13 Spectral class K5V+M1.5V (yellow-orange/red)
Pri motion ra -231 Sec motion ra
Pri motion dec +020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 81105 Constellation Ursa Major SAO 42846 HIP 46199
Tycho2 3425-01073-1 Gaia DR2 819208081921567232 HD 81105 BD BD+46 1500
Distance 25.71 Distance ly 83.87
 
 
ORBITAL ELEMENTS
 
 
Period (P)111.8y± 4.8 Periastron (T)1996.2y± 0.2 Semi-major axis (a)693.7m± 20.5
Eccentricity (e)0.891± 0.008 Inclination (i)77.8°± 0.4 Longitude of periastron (ω)264.8°± 0.5
Node (Ω)138.6°± 0.5 Notes ReferenceMit2020
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 146.5 0.271
2001 148.4 0.298
2002 149.9 0.320
2003 151.3 0.337
2004 152.5 0.351
2005 153.7 0.363
2006 154.8 0.373
2007 155.9 0.381
2008 156.9 0.388
2009 157.8 0.394
2010 158.8 0.399
2011 159.7 0.402
2012 160.6 0.405
2013 161.5 0.408
2014 162.4 0.410
2015 163.3 0.411
2016 164.2 0.411
2017 165.0 0.412
2018 165.9 0.411
2019 166.8 0.411
2020 167.7 0.410
2021 168.6 0.408
2022 169.5 0.407
2023 170.4 0.405
2024 171.3 0.403
2025 172.2 0.400
2026 173.1 0.398
2027 174.1 0.395
2028 175.0 0.392
2029 176.0 0.389
2030 177.0 0.386
2031 178.0 0.382
2032 179.0 0.379
2033 180.1 0.375
2034 181.2 0.372
2035 182.2 0.368
2036 183.4 0.364
2037 184.5 0.360
2038 185.6 0.356
2039 186.8 0.352
2040 188.0 0.348
2041 189.3 0.344
2042 190.6 0.340
2043 191.9 0.336
2044 193.2 0.332
2045 194.6 0.328
2046 196.0 0.324
2047 197.4 0.320
2048 198.9 0.316
2049 200.4 0.312
2050 201.9 0.308


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds09252%2B4606c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic