17490+3704 COU1145

 
 
17h 48m 58.27s +37 03' 43.0" P.A. 98.8 sep 0.14 mag 7.82,8.32 Sp G0 dist. 51.63 pc (168.42 l.y.)
 
 
Coord 2000
17490+3704
Discov num
COU1145
Comp
Coord arcsec 2000
17 48 58.27 +37 03 43.0
Date first
1974
Date last
2012
Obs
94
Pa first
101
Pa last
302
P.A. Now (θ)
98.8°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.14"
Mag pri
7.82
Mag sec
8.32
delta mag (ΔM)
0.5
Spectral class
G0 (yellow)
Pri motion ra
+063
Sec motion ra
Pri motion dec
-084
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
302.4
Precise sep
0.16
Constellation
Hercules
SAO
66352
HIP
87204
Tycho2
2619-00395-1
HD
162338
BD
BD+37 2949
Distance
51.63
Distance ly
168.42
last precise pa
302.4
last precise sep
0.16
 
 
ORBITAL ELEMENTS
 
 
Period (P)20.7y± 0.17 Periastron (T)1988.724y± 0.026 Semi-major axis (a)0.1788a± 0.0014
Eccentricity (e)0.6081± 0.0054 Inclination (i)110.28°± 0.27 Longitude of periastron (ω)261.11°± 0.42
Node (Ω)136.34°± 0.47 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.101 57.5
2001 0.097 41.8
2002 0.099 25.9
2003 0.106 11.2
2004 0.115 358.6
2005 0.124 347.9
2006 0.131 338.6
2007 0.129 329.6
2008 0.111 319.4
2009 0.057 297.3
2010 0.054 159.9
2011 0.118 137.8
2012 0.150 129.4
2013 0.164 123.3
2014 0.166 117.7
2015 0.161 112.0
2016 0.153 105.8
2017 0.141 98.8
2018 0.129 90.3
2019 0.116 80.1
2020 0.106 67.6
2021 0.099 52.9
2022 0.097 37.0
2023 0.101 21.3
2024 0.108 7.2
2025 0.118 355.2
2026 0.127 345.0
2027 0.131 335.9
2028 0.126 326.8
2029 0.100 315.2
2030 0.033 272.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds17490%2B3704a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17490+3704 COU1145 2006 84 335 0.1 7.82 8.32 G0 NOD 174858.27+370343.0
17490+3704 COU1145 2007 88 326 0.1 7.82 8.32 G0 NOD 174858.27+370343.0
17490+3704 COU1145 2008 93 313 0.1 7.82 8.32 G0 NOD 174858.27+370343.0
17490+3704 COU1145 2012 94 122 0.2 7.82 8.32 G0 NOD 174858.27+370343.0

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