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Doubles in session


Current system
20311-1503
FIN 336
HD 195330


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AHD 16

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ARA 127

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OCC 402

77' : 20260-1526
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OCC 23

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ARA 126

85' : 20328-1343
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85' : 20253-1449
OCC 920

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UC 4194AB

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UC 4182AB

92' : 20374-1509
UC 4237

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TOK 678

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96' : 20325-1637
SEE 512

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OCC1089

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RST4061

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RST4672AB



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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20311-1503 FIN 336 (HD 195330)

 
 
20h 31m 04.33s -15° 03' 21.8" P.A. 337.00 sep 0.1 mag 6.80,7.00 Sp gG5 dist. 116.82 pc (381.07 l.y.)
 
 
Coord 2000 20311-1503 Discov num FIN 336 Comp Coord arcsec 2000 20 31 04.33 -15 03 21.8
Date first 1954 Date last 2022 Obs 45
Pa first 297 Pa last 336.9 P.A. Now (θ) 351°
Sep first 0.1 Sep last 0.113 Sep. Now (ρ) 0.112"
Mag pri 6.80 Mag sec 7.00 delta mag (ΔM) 0.2 Spectral class gG5
Pri motion ra -038 Sec motion ra
Pri motion dec -046 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 195330 Constellation Capricornus SAO 163645 HIP 101221
Tycho2 6329-02134-1 Gaia DR2 6875393890936208256 HD 195330 HR 7837
GC 28533 BD BD-15 5696 Distance 116.82 Distance ly 381.07
 
 
ORBITAL ELEMENTS
 
 
Period (P)51.72y± 0.46 Periastron (T)2000.26y± 0.71 Semi-major axis (a)0.189a± 0.011
Eccentricity (e)0.751± 0.025 Inclination (i)73.7°± 1.4 Longitude of periastron (ω)83°± 1.2
Node (Ω)105.4°± 1.3 Notes ReferenceTok2023e
Equinox2000 Last observation2022 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 135.3 0.024
2001 268.1 0.039
2002 282.6 0.078
2003 288.2 0.104
2004 291.8 0.121
2005 294.7 0.132
2006 297.2 0.140
2007 299.4 0.145
2008 301.5 0.149
2009 303.6 0.151
2010 305.6 0.151
2011 307.6 0.151
2012 309.7 0.150
2013 311.7 0.148
2014 313.9 0.146
2015 316.1 0.143
2016 318.4 0.139
2017 320.8 0.136
2018 323.4 0.132
2019 326.1 0.128
2020 329.0 0.124
2021 332.1 0.120
2022 335.4 0.116
2023 339.0 0.112
2024 342.8 0.108
2025 346.9 0.104
2026 351.2 0.101
2027 355.9 0.098
2028 0.8 0.095
2029 6.0 0.093
2030 11.4 0.092
2031 17.0 0.091
2032 22.6 0.090
2033 28.3 0.090
2034 33.9 0.091
2035 39.3 0.092
2036 44.6 0.094
2037 49.7 0.096
2038 54.5 0.099
2039 59.1 0.102
2040 63.4 0.105
2041 67.5 0.107
2042 71.4 0.110
2043 75.2 0.112
2044 78.7 0.114
2045 82.2 0.115
2046 85.7 0.115
2047 89.3 0.113
2048 93.0 0.108
2049 97.2 0.100
2050 102.6 0.084


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds20311-1503d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic