17080+3556 HU 1176AB (c Her)

 
 
17H 08M 02.08S +35 56' 06.8" P.A. 122.4 SEP 0.13 MAG 6.10,6.10 SP A5M DIST. 54.26 PC (177 L.Y.)
 
 
Coord 2000
17080+3556
Discov num
HU 1176
Comp
AB
Coord arcsec 2000
17 08 02.08 +35 56 06.8
Date first
1905
Date last
2011
Obs
176
Pa first
112
Pa last
98
P.A. Now (θ)
122.4°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
6.10
Mag sec
6.10
delta mag (ΔM)
0
Spectral class
A5m (white)
Pri motion ra
-017
Sec motion ra
Pri motion dec
-016
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
17080+3556 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show c Her 65812 17080+3556 HU 1176 AB 1905 2011 176 122 0.1 6.10 6.10 0.00 Y <===
Show 65812 17080+3556 HO 412 AB,C 1892 2002 13 132 20.2 5.48 12.10 6.62
Show 65812 17080+3556 WAL 77 AB,D 1933 2002 5 58 80.0 5.48 11.46 5.98
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Other name
c Her
Constellation
Hercules
SAO
65812
HIP
83838
Tycho2
2603-01829-1
HD
155103
HR
6377
GC
23132
ADS
10360
BD
BD+36 2827
Distance
54.26
Distance ly
177
last precise pa
97.9
last precise sep
0.124
 
 
ORBITAL ELEMENTS
 
 
Period (P)2971.54d (8.140000000000001y)± 0.84 Periastron (T)42567.9m (1975.424y)± 3.4 Semi-major axis (a)0.10863a± 0.0002
Eccentricity (e)0.5338± 0.0015 Inclination (i)121.221°± 0.077 Longitude of periastron (ω)53.81°± 0.16
Node (Ω)309.3°± 0.11 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000-01-01 0.028 234.4
2001-01-01 0.099 135.0
2002-01-01 0.133 118.7
2003-01-01 0.135 106.4
2004-01-01 0.118 92.4
2005-01-01 0.092 71.4
2006-01-01 0.069 34.2
2007-01-01 0.067 342.5
2008-01-01 0.034 268.0
2009-01-01 0.091 138.5
2010-01-01 0.131 120.5
2011-01-01 0.136 108.1
2012-01-01 0.121 94.5
2013-01-01 0.096 75.0
2014-01-01 0.071 40.5
2015-01-01 0.067 349.5
2016-01-01 0.044 288.5
2017-01-01 0.081 142.7
2018-01-01 0.128 122.4
2019-01-01 0.137 109.8
2020-01-01 0.124 96.6
2021-01-01 0.099 78.2
2022-01-01 0.074 46.5
2023-01-01 0.066 356.5
2024-01-01 0.054 301.5
2025-01-01 0.070 148.1
2026-01-01 0.124 124.3
2027-01-01 0.137 111.4
2028-01-01 0.127 98.6
2029-01-01 0.103 81.3
2030-01-01 0.077 52.0

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic