17533+2459 A   235

 
 
17H 53M 18.60S +24 59' 29.0" P.A. 69.7 SEP 0.32 MAG 8.36,9.28 SP G8V DIST. 49.04 PC (159.97 L.Y.)
 
 
Coord 2000
17533+2459
Discov num
A   235
Comp
Coord arcsec 2000
17 53 18.60 +24 59 29.0
Date first
1901
Date last
2009
Obs
112
Pa first
65
Pa last
139
P.A. Now (θ)
69.7°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.32"
Mag pri
8.36
Mag sec
9.28
delta mag (ΔM)
0.92
Spectral class
G8V (yellow)
Pri motion ra
-070
Sec motion ra
-070
Pri motion dec
-050
Sec motion dec
-050
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
85508
HIP
87565
Tycho2
2094-01508-1
HD
163077
ADS
10871
BD
BD+25 3368
Distance
49.04
Distance ly
159.97
last precise pa
139.4
last precise sep
0.088
 
 
ORBITAL ELEMENTS
 
 
Period (P)38.09y Periastron (T)2082.1y Semi-major axis (a)0.273a
Eccentricity (e)0.483 Inclination (i)67.3° Longitude of periastron (ω)355°
Node (Ω)263.8° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.150 119.8
2001 0.112 134.1
2002 0.083 160.4
2003 0.078 199.8
2004 0.100 231.3
2005 0.127 249.9
2006 0.141 262.8
2007 0.135 275.1
2008 0.113 290.5
2009 0.090 314.0
2010 0.083 347.2
2011 0.099 17.4
2012 0.129 36.2
2013 0.164 47.5
2014 0.198 54.9
2015 0.232 60.0
2016 0.262 64.0
2017 0.290 67.1
2018 0.315 69.7
2019 0.337 71.9
2020 0.356 73.9
2021 0.371 75.7
2022 0.384 77.4
2023 0.394 78.9
2024 0.400 80.4
2025 0.404 81.9
2026 0.404 83.4
2027 0.401 84.8
2028 0.395 86.3
2029 0.386 87.9
2030 0.373 89.6

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