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Doubles in session


Current system
13305+0729
A 1789
HD 117478


Nearby doubles
26' : 13292+0746
TDS8846AB

30' : 13322+0744
LDS3074

31' : 13319+0751
LDS3073

37' : 13304+0653
SLW 882

56' : 13276+0655
HJ 1232

60' : 13269+0705
SLW 873

61' : 13338+0654
LDS3077AB

64' : 13347+0718
LDS3079

68' : 13339+0644
LDS3078

69' : 13334+0636
SLW 891

69' : 13304+0620
CVR1517

78' : 13351+0653
LDS3080

83' : 13348+0636
SLW 895

84' : 13361+0739
CVR 703

87' : 13249+0708
TDS8816

92' : 13365+0707
BRT2604

94' : 13340+0847
A 1792

99' : 13370+0751
VBS 23

102' : 13368+0650
A 1611

102' : 13245+0816
CVR 694

105' : 13264+0854
WS 9002

107' : 13376+0715
LDS3084

109' : 13243+0633
SLW 865

110' : 13316+0541
LDS3072

110' : 13307+0919
STF1751

111' : 13293+0918
LDS4369AB



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.

13305+0729 A 1789 (HD 117478)

 
 
13h 30m 29.62s +07° 29' 10.1" P.A. 156.00 sep 0.2 mag 9.14,9.39 Sp A5 dist. 207.04 pc (675.36 l.y.)
 
 
Coord 2000 13305+0729 Discov num A  1789 Comp Coord arcsec 2000 13 30 29.62 +07 29 10.1
Date first 1908 Date last 2022 Obs 34
Pa first 123 Pa last 156.4 P.A. Now (θ) 150.1° (calc)
Sep first 0.3 Sep last 0.192 Sep. Now (ρ) 0.2" (calc)
Mag pri 9.14 Mag sec 9.39 delta mag (ΔM) 0.25 Spectral class A5 (white)
Pri motion ra +018 Sec motion ra
Pri motion dec -031 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 117478 Constellation Virgo SAO 119970 HIP 65897
Tycho2 0313-01267-1 Gaia DR2 3719424399683365248 HD 117478 ADS 8926
BD BD+08 2721 Distance 207.04 Distance ly 675.36
 
 
ORBITAL ELEMENTS
 
 
Period (P)143.44y± 1.2 Periastron (T)1962.712y± 5 Semi-major axis (a)0.191a± 0.002
Eccentricity (e)0.42± 0.024 Inclination (i)137.8°± 0.5 Longitude of periastron (ω)105.4°± 5
Node (Ω)67.9°± 10 Notes ReferenceGmJ2022
Equinox Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 194.3 0.182
2001 192.5 0.183
2002 190.6 0.183
2003 188.8 0.184
2004 187.0 0.185
2005 185.2 0.185
2006 183.4 0.186
2007 181.6 0.186
2008 179.8 0.187
2009 178.1 0.188
2010 176.3 0.188
2011 174.6 0.189
2012 172.9 0.189
2013 171.2 0.190
2014 169.5 0.191
2015 167.8 0.191
2016 166.1 0.192
2017 164.5 0.193
2018 162.8 0.194
2019 161.2 0.194
2020 159.6 0.195
2021 157.9 0.196
2022 156.3 0.197
2023 154.8 0.197
2024 153.2 0.198
2025 151.6 0.199
2026 150.1 0.200
2027 148.5 0.201
2028 147.0 0.201
2029 145.5 0.202
2030 144.0 0.203
2031 142.5 0.204
2032 141.0 0.205
2033 139.6 0.205
2034 138.1 0.206
2035 136.7 0.207
2036 135.3 0.208
2037 133.8 0.209
2038 132.4 0.209
2039 131.0 0.210
2040 129.6 0.211
2041 128.3 0.212
2042 126.9 0.212
2043 125.5 0.213
2044 124.2 0.214
2045 122.8 0.214
2046 121.5 0.215
2047 120.2 0.215
2048 118.9 0.216
2049 117.5 0.216
2050 116.2 0.217


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds13305%2B0729c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic