17326+3445 HU 1181

 
 
17h 32m 34.08s +34 44' 47.6" P.A. 19.3 sep 0.06 mag 8.62,9.11 Sp G0 dist. 61.96 pc (202.11 l.y.)
 
 
Coord 2000
17326+3445
Discov num
HU 1181
Comp
Coord arcsec 2000
17 32 34.08 +34 44 47.6
Date first
1904
Date last
2012
Obs
44
Pa first
331
Pa last
323
P.A. Now (θ)
19.3°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.06"
Mag pri
8.62
Mag sec
9.11
delta mag (ΔM)
0.49
Spectral class
G0 (yellow)
Pri motion ra
+037
Sec motion ra
Pri motion dec
+005
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
323
Precise sep
0.113
Constellation
Hercules
SAO
66127
HIP
85846
Tycho2
2613-00891-1
HD
159304
ADS
10624
BD
BD+34 2990
Distance
61.96
Distance ly
202.11
last precise pa
323
last precise sep
0.113
 
 
ORBITAL ELEMENTS
 
 
Period (P)23.3y Periastron (T)1992y Semi-major axis (a)0.16a
Eccentricity (e)0.26 Inclination (i)70° Longitude of periastron (ω)205°
Node (Ω)157° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.186 153.3
2001 0.195 156.8
2002 0.197 160.2
2003 0.192 163.7
2004 0.180 167.4
2005 0.163 171.8
2006 0.142 177.5
2007 0.116 185.4
2008 0.089 198.0
2009 0.066 220.6
2010 0.057 257.3
2011 0.070 291.6
2012 0.093 311.9
2013 0.112 324.3
2014 0.121 333.7
2015 0.114 342.9
2016 0.091 355.2
2017 0.060 19.3
2018 0.047 72.6
2019 0.071 115.6
2020 0.106 133.1
2021 0.138 142.0
2022 0.164 147.7
2023 0.182 152.1
2024 0.193 155.8
2025 0.197 159.2
2026 0.194 162.6
2027 0.184 166.3
2028 0.169 170.4
2029 0.149 175.6
2030 0.124 182.6

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

grafico orbita





wds17326%2B3445a.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
17326+3445 HU 1181 1996 43 316 0.1 8.62 9.11 G0 NOD 173234.08+344447.6
17326+3445 HU 1181 2012 44 323 0.1 8.62 9.11 G0 NOD 173234.08+344447.6

If you need more information about this double, apply for a data request form to the WDS.