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Doubles in session


Current system
17155+1052
HDS 2440
HD 156146


Nearby doubles
10' : 17148+1051
GRV 948

20' : 17167+1100
BPM 678

34' : 17138+1114
A 2785

36' : 17174+1113
HU 172

41' : 17176+1025
HDS2445

48' : 17125+1035
B 2826

53' : 17148+1000
STF2143

54' : 17119+1044
TDS 856

72' : 17116+1008
DAM 974

80' : 17173+0937
UC 3318

82' : 17122+0946
HU 170

91' : 17183+0931
STT 326

91' : 17199+1155
UC 227

95' : 17096+1013
CVR 857

105' : 17140+1234
TDT 275

107' : 17150+1238
HDS2439

119' : 17086+0951
HU 167

121' : 17217+1209
GWP2704

122' : 17134+1249
DAM 990AB

128' : 17099+1229
GWP2692

130' : 17173+0845
KPP4031

130' : 17113+1246
JNN 152

135' : 17164+1303
LDS 990

137' : 17219+1230
HDS2451

139' : 17233+0936
HEI 797

140' : 17092+0907
DAM 910



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.

17155+1052 HDS 2440 (HD 156146)

 
 
17h 15m 28.89s +10° 51' 36.0" P.A. 67.00 sep 0.1 mag 9.24,10.04 Sp G5 dist. 71.48 pc (233.17 l.y.)
 
 
Coord 2000 17155+1052 Discov num HDS2440 Comp Coord arcsec 2000 17 15 28.89 +10 51 36.0
Date first 1991 Date last 2023 Obs 16
Pa first 293 Pa last 67.4 P.A. Now (θ) 35.1° (calc)
Sep first 0.1 Sep last 0.139 Sep. Now (ρ) 0.084" (calc)
Mag pri 9.24 Mag sec 10.04 delta mag (ΔM) 0.8 Spectral class G5 (yellow)
Pri motion ra -065 Sec motion ra
Pri motion dec -225 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 156146 Constellation Ophiuchus SAO 102690 HIP 84417
Tycho2 0982-02190-1 Gaia DR2 4539864892406879872 HD 156146 GC 23270
BD BD+11 3146 CD CD-3811686 CP CP-38 6755 Distance 71.48
Distance ly 233.17
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.73y± 0.26 Periastron (T)2002.46y± 0.12 Semi-major axis (a)153.7m± 1.3
Eccentricity (e)0.252± 0.012 Inclination (i)120.5°± 1 Longitude of periastron (ω)109.3°± 1.5
Node (Ω)75.25°± 0.6 Notes ReferenceMdz2021
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 40.8 0.091
2001 13.4 0.066
2002 329.4 0.060
2003 294.0 0.079
2004 274.4 0.104
2005 262.1 0.124
2006 252.5 0.135
2007 243.9 0.138
2008 235.2 0.134
2009 225.5 0.126
2010 214.3 0.115
2011 200.8 0.105
2012 184.9 0.098
2013 167.3 0.096
2014 150.1 0.100
2015 135.0 0.108
2016 122.5 0.120
2017 112.3 0.133
2018 103.9 0.145
2019 96.7 0.155
2020 90.3 0.162
2021 84.2 0.164
2022 78.0 0.160
2023 71.4 0.151
2024 63.4 0.134
2025 52.6 0.111
2026 35.1 0.084
2027 2.6 0.062
2028 317.9 0.064
2029 287.6 0.086
2030 270.6 0.111
2031 259.3 0.128
2032 250.2 0.137
2033 241.6 0.137
2034 232.7 0.132
2035 222.7 0.123
2036 210.9 0.112
2037 196.7 0.103
2038 180.2 0.097
2039 162.6 0.096
2040 145.8 0.102
2041 131.4 0.111
2042 119.5 0.124
2043 109.9 0.136
2044 101.9 0.148
2045 95.0 0.157
2046 88.6 0.163
2047 82.6 0.163
2048 76.3 0.158
2049 69.4 0.147
2050 60.9 0.128


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17155%2B1052c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic