17324+2848 A   352

 
 
17H 32M 22.97S +28 48' 16.0" P.A. 194 SEP 0.13 MAG 8.55,9.39 SP F2 DIST. 126.26 PC (411.86 L.Y.)
 
 
Coord 2000
17324+2848
Discov num
A   352
Comp
Coord arcsec 2000
17 32 22.97 +28 48 16.0
Date first
1902
Date last
1996
Obs
53
Pa first
183
Pa last
353
P.A. Now (θ)
194°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
8.55
Mag sec
9.39
delta mag (ΔM)
0.84
Spectral class
F2 (yellow-white)
Pri motion ra
+027
Sec motion ra
Pri motion dec
+008
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
85189
HIP
85837
Tycho2
2087-01713-1
HD
159240
ADS
10621
BD
BD+28 2771
Distance
126.26
Distance ly
411.86
last precise pa
352.7
last precise sep
0.123
 
 
ORBITAL ELEMENTS
 
 
Period (P)64.05y± 1.5 Periastron (T)1982.58y± 0.4 Semi-major axis (a)0.177a± 0.002
Eccentricity (e)0.309± 0.005 Inclination (i)98.6°± 0.5 Longitude of periastron (ω)292.9°± 1.5
Node (Ω)1.3°± 1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1996
label rho theta
2000 0.096 345.3
2001 0.086 342.3
2002 0.075 338.4
2003 0.065 333.2
2004 0.054 326.0
2005 0.045 315.8
2006 0.038 300.9
2007 0.034 280.9
2008 0.034 258.9
2009 0.039 240.1
2010 0.047 226.7
2011 0.057 217.4
2012 0.068 210.9
2013 0.078 206.2
2014 0.089 202.6
2015 0.100 199.8
2016 0.110 197.5
2017 0.121 195.6
2018 0.130 194.0
2019 0.140 192.6
2020 0.148 191.4
2021 0.156 190.3
2022 0.164 189.4
2023 0.170 188.5
2024 0.176 187.6
2025 0.181 186.9
2026 0.185 186.1
2027 0.188 185.4
2028 0.190 184.7
2029 0.191 184.0
2030 0.191 183.3

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