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Doubles in session


Current system
13482+2248
COU 401
HD 120280


Nearby doubles
38' : 13457+2231
YSC 49

42' : 13509+2306
LDS5796

46' : 13497+2328
POU3152

49' : 13484+2337
LDS4410

59' : 13472+2345
KPP3905

63' : 13436+2243
POU3149

64' : 13502+2152
SLW 938

71' : 13510+2346
HJ 2688

71' : 13440+2331
CVR1536

72' : 13446+2340
STF1779

77' : 13444+2344
POU3150

80' : 13425+2304
SLW 916

81' : 13538+2303
AZC 82

81' : 13477+2128
HDS1939AB

82' : 13435+2338
POU3148

84' : 13422+2307
HJ 2672

87' : 13455+2131
KPP1706

92' : 13494+2418
TDS8982

97' : 13504+2117
S 656

102' : 13554+2313
LDS4419

104' : 13441+2121
SKF1746

105' : 13427+2136
CVR 143

111' : 13550+2349
LDS4418

113' : 13527+2116
COU 183

118' : 13408+2150
SLW 908

119' : 13425+2121
SLW 915



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

13482+2248 COU 401 (HD 120280)

 
 
13h 48m 09.21s +22° 48' 06.0" P.A. 7.00 sep 0.3 mag 9.50,10.60 Sp G0+G8 dist. 167.5 pc (546.38 l.y.)
 
 
Coord 2000 13482+2248 Discov num COU 401 Comp Coord arcsec 2000 13 48 09.21 +22 48 06.0
Date first 1969 Date last 2017 Obs 13
Pa first 45 Pa last 6.7 P.A. Now (θ) 6.7°
Sep first 0.2 Sep last 0.331 Sep. Now (ρ) 0.331"
Mag pri 9.50 Mag sec 10.60 delta mag (ΔM) 1.1 Spectral class G0+G8 (yellow/yellow)
Pri motion ra -014 Sec motion ra
Pri motion dec +014 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 120280 Constellation Bootes SAO 82998 HIP 67342
Tycho2 1999-00276-1 Gaia DR2 1251360613138794880 HD 120280 BD BD+23 2615
Distance 167.5 Distance ly 546.38
 
 
ORBITAL ELEMENTS
 
 
Period (P)98.7y± 1 Periastron (T)2007.42y± 0.02 Semi-major axis (a)0.401a± 0.005
Eccentricity (e)0.7± 0.01 Inclination (i)76.8°± 2 Longitude of periastron (ω)70.9°± 5
Node (Ω)165.4°± 3 Notesn ReferenceDoc2010h
Equinox2000 Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 154.6 0.213
2001 156.7 0.209
2002 159.0 0.202
2003 161.5 0.191
2004 164.3 0.174
2005 168.0 0.148
2006 173.6 0.113
2007 186.1 0.067
2008 244.5 0.028
2009 317.4 0.060
2010 331.8 0.109
2011 337.5 0.154
2012 340.7 0.192
2013 342.9 0.224
2014 344.6 0.252
2015 346.0 0.276
2016 347.2 0.296
2017 348.2 0.314
2018 349.1 0.329
2019 350.0 0.342
2020 350.8 0.354
2021 351.5 0.364
2022 352.2 0.372
2023 352.9 0.379
2024 353.5 0.385
2025 354.2 0.390
2026 354.8 0.394
2027 355.4 0.397
2028 356.0 0.399
2029 356.6 0.400
2030 357.2 0.401
2031 357.8 0.401
2032 358.4 0.400
2033 359.0 0.399
2034 359.6 0.398
2035 0.2 0.395
2036 0.8 0.393
2037 1.4 0.390
2038 2.1 0.386
2039 2.7 0.382
2040 3.4 0.378
2041 4.1 0.373
2042 4.8 0.368
2043 5.5 0.363
2044 6.2 0.358
2045 7.0 0.352
2046 7.8 0.346
2047 8.6 0.339
2048 9.4 0.333
2049 10.3 0.326
2050 11.2 0.319


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds13482%2B2248b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic