16309+3804 STF2059

 
 
16H 30M 55.71S +38 03' 52.6" P.A. 177.4 SEP 0.28 MAG 8.75,8.79 SP F5 DIST. 203.25 PC (663 L.Y.)
 
 
Coord 2000
16309+3804
Discov num
STF2059
Comp
Coord arcsec 2000
16 30 55.71 +38 03 52.6
Date first
1829
Date last
2009
Obs
72
Pa first
209
Pa last
182
P.A. Now (θ)
177.4°
Sep first
1.2
Sep last
0.4
Sep. Now (ρ)
0.28"
Mag pri
8.75
Mag sec
8.79
delta mag (ΔM)
0.04
Spectral class
F5 (yellow-white)
Pri motion ra
-010
Sec motion ra
-010
Pri motion dec
+042
Sec motion dec
+042
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
65355
HIP
80885
Tycho2
3063-01619-1
HD
149083
ADS
10093
BD
BD+38 2788
Distance
203.25
Distance ly
663
last precise pa
181.9
last precise sep
0.373
 
 
ORBITAL ELEMENTS
 
 
Period (P)955y Periastron (T)2059y Semi-major axis (a)1.114a
Eccentricity (e)0.52 Inclination (i)102.8° Longitude of periastron (ω)297.9°
Node (Ω)23.8° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.466 189.6
2001 0.456 189.2
2002 0.446 188.7
2003 0.436 188.3
2004 0.425 187.8
2005 0.415 187.3
2006 0.405 186.8
2007 0.395 186.2
2008 0.385 185.6
2009 0.374 185.0
2010 0.364 184.4
2011 0.353 183.7
2012 0.343 183.0
2013 0.333 182.2
2014 0.322 181.3
2015 0.312 180.5
2016 0.301 179.5
2017 0.291 178.5
2018 0.280 177.4
2019 0.270 176.3
2020 0.260 175.0
2021 0.249 173.6
2022 0.239 172.1
2023 0.229 170.5
2024 0.219 168.8
2025 0.209 166.8
2026 0.200 164.7
2027 0.190 162.4
2028 0.181 159.8
2029 0.173 157.0
2030 0.164 153.9

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