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Doubles in session


Current system
01559+0151
STF 186
NSV667


Nearby doubles
8' : 01556+0146
BU 1367

22' : 01571+0141
A 2409

25' : 01548+0208
CVR1088

27' : 01544+0136
CVR1087

58' : 01528+0117
GWP 233

64' : 01560+0046
RST5186

67' : 01554+0257
A 2407

68' : 01571+0046
WSP 71

70' : 01583+0250
GWP 245

74' : 02001+0115
BAL 954

74' : 01517+0113
A 2406AB

78' : 01570+0035
GRV 106

79' : 01546+0035
BAL 953

80' : 01553+0032
CVR1089

85' : 02013+0218
CLZ 19

86' : 01537-0032
SKF 844

87' : 01594+0258
A 2410

89' : 01506+0231
HDO 54AB

90' : 01598-0043
A 1922

90' : 01518-0046
CVR1084

92' : 02020+0154
LDS3337

93' : 01581-0025
DEA 28AB

93' : 02003-0046
CVR1091

95' : 02017-0645
CAB 19

96' : 02011+0055
KPP3473AB

97' : 01533+0022
SKF 843



Selections
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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.

01559+0151 STF 186 (NSV667)

 
 
01h 55m 53.80s +01° 50' 59.6" P.A. 81.00 sep 0.5 mag 6.79,6.84 Sp G0V+F7V dist. 39.89 pc (130.12 l.y.)
 
 
Coord 2000 01559+0151 Discov num STF 186 Comp Coord arcsec 2000 01 55 53.80 +01 50 59.6
Date first 1825 Date last 2024 Obs 475
Pa first 240 Pa last 80.7 P.A. Now (θ) 262.8° (calc)
Sep first 1.4 Sep last 0.541 Sep. Now (ρ) 0.508" (calc)
Mag pri 6.79 Mag sec 6.84 delta mag (ΔM) 0.05 Spectral class G0V+F7V (yellow/yellow-white)
Pri motion ra +164 Sec motion ra +164
Pri motion dec +189 Sec motion dec +189
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV667 Constellation Cetus SAO 110235 HIP 8998
Tycho2 0030-01344-1 Gaia DR2 2511415438379352192 HD 11803 HR 560
GC 2326 ADS 1538 BD BD+01 347 Distance 39.89
Distance ly 130.12
 
 
ORBITAL ELEMENTS
 
 
Period (P)167.7y± 3.1 Periastron (T)1893.8y± 3.1 Semi-major axis (a)1.048a± 0.035
Eccentricity (e)0.717± 0.057 Inclination (i)74.6°± 2.4 Longitude of periastron (ω)224.3°± 3.5
Node (Ω)220.07°± 0.65 Notesn ReferenceMsn2023
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 241.6 1.026
2001 242.0 1.009
2002 242.4 0.992
2003 242.9 0.974
2004 243.4 0.956
2005 243.9 0.938
2006 244.4 0.919
2007 244.9 0.901
2008 245.4 0.882
2009 246.0 0.862
2010 246.6 0.843
2011 247.2 0.823
2012 247.9 0.804
2013 248.6 0.783
2014 249.3 0.763
2015 250.1 0.743
2016 250.9 0.722
2017 251.8 0.701
2018 252.7 0.680
2019 253.7 0.659
2020 254.7 0.637
2021 255.8 0.616
2022 257.0 0.595
2023 258.3 0.573
2024 259.7 0.551
2025 261.2 0.530
2026 262.8 0.508
2027 264.5 0.487
2028 266.5 0.466
2029 268.6 0.445
2030 270.9 0.424
2031 273.4 0.404
2032 276.2 0.384
2033 279.4 0.365
2034 282.8 0.347
2035 286.6 0.330
2036 290.8 0.314
2037 295.5 0.300
2038 300.5 0.287
2039 306.0 0.277
2040 311.9 0.269
2041 318.1 0.263
2042 324.5 0.260
2043 330.9 0.260
2044 337.3 0.263
2045 343.5 0.268
2046 349.5 0.276
2047 355.0 0.285
2048 0.2 0.296
2049 5.0 0.309
2050 9.4 0.321


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds01559%2B0151d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic