18044-5953 RST5099

 
 
18H 04M 26.16S -59 52' 31.6" P.A. 322.8 SEP 0.18 MAG 9.19,9.01 SP G3/5V DIST. 72.41 PC (236.2 L.Y.)
 
 
Coord 2000
18044-5953
Discov num
RST5099
Comp
Coord arcsec 2000
18 04 26.16 -59 52 31.6
Date first
1942
Date last
2014
Obs
13
Pa first
75
Pa last
305
P.A. Now (θ)
322.8°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.18"
Mag pri
9.19
Mag sec
9.01
delta mag (ΔM)
0.18
Spectral class
G3/5V (yellow)
Pri motion ra
-020
Sec motion ra
Pri motion dec
-171
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pavo
SAO
245210
HIP
88510
Tycho2
8755-01924-1
HD
164328
CP
CP-59 7214
Distance
72.41
Distance ly
236.2
last precise pa
305.1
last precise sep
0.19
 
 
ORBITAL ELEMENTS
 
 
Period (P)45.64y± 2.1 Periastron (T)2009.1y± 0.1 Semi-major axis (a)0.259a± 0.004
Eccentricity (e)0.513± 0.01 Inclination (i)68.2°± 1 Longitude of periastron (ω)107.1°± 2.7
Node (Ω)114.4°± 1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.265 105.7
2001 0.257 108.1
2002 0.245 110.8
2003 0.228 113.8
2004 0.206 117.4
2005 0.177 121.9
2006 0.141 128.6
2007 0.098 140.7
2008 0.057 171.9
2009 0.055 238.8
2010 0.095 272.2
2011 0.133 285.3
2012 0.161 293.1
2013 0.179 298.9
2014 0.188 303.8
2015 0.192 308.5
2016 0.191 313.1
2017 0.186 317.8
2018 0.180 322.8
2019 0.173 328.3
2020 0.165 334.2
2021 0.157 340.7
2022 0.150 347.9
2023 0.144 355.7
2024 0.140 4.1
2025 0.138 12.8
2026 0.138 21.7
2027 0.141 30.3
2028 0.146 38.5
2029 0.153 46.1
2030 0.161 52.9

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