20104-1923 HDS2873

 
 
20h 10m 25.46s -19 22' 59.4" P.A. 233.1 sep 0.07 mag 7.49,10.22 Sp G0V dist. 61.09 pc (199.28 l.y.)
 
 
Coord 2000
20104-1923
Discov num
HDS2873
Comp
Coord arcsec 2000
20 10 25.46 -19 22 59.4
Date first
1991
Date last
2014
Obs
9
Pa first
204
Pa last
194
P.A. Now (θ)
233.1°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.07"
Mag pri
7.49
Mag sec
10.22
delta mag (ΔM)
2.73
Spectral class
G0V (yellow)
Pri motion ra
-004
Sec motion ra
Pri motion dec
-127
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
193.7
Precise sep
0.064
Constellation
Capricornus
SAO
163313
HIP
99391
Tycho2
6323-02047-1
Gaia DR2
78736575616
HD
191434
BD
BD-19 5731
Distance
61.09
Distance ly
199.28
last precise pa
193.7
last precise sep
0.064
 
 
ORBITAL ELEMENTS
 
 
Period (P)90y Periastron (T)2007.46y± 0.67 Semi-major axis (a)0.3843a± 0.0087
Eccentricity (e)0.484± 0.006 Inclination (i)94°± 0.4 Longitude of periastron (ω)-0.3°± 4.3
Node (Ω)35.2°± 0.9 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.055 54.8
2001 0.083 46.9
2002 0.111 43.0
2003 0.136 40.6
2004 0.159 38.9
2005 0.177 37.7
2006 0.191 36.6
2007 0.197 35.6
2008 0.197 34.7
2009 0.191 33.8
2010 0.177 32.7
2011 0.159 31.4
2012 0.136 29.8
2013 0.111 27.4
2014 0.083 23.5
2015 0.055 15.6
2016 0.029 352.7
2017 0.023 282.0
2018 0.045 244.1
2019 0.073 233.1
2020 0.102 228.2
2021 0.130 225.5
2022 0.158 223.7
2023 0.185 222.5
2024 0.211 221.6
2025 0.237 220.9
2026 0.261 220.3
2027 0.284 219.8
2028 0.307 219.4
2029 0.328 219.0
2030 0.349 218.7

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






wds20104-1923a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20104-1923 HDS2873 2006 3 35 0.2 7.49 10.22 G0V D 201025.46-192259.4
20104-1923 HDS2873 2007 4 36 0.2 7.49 10.22 G0V D 201025.46-192259.4
20104-1923 HDS2873 2013 8 206 0.1 7.49 10.22 G0V 201025.46-192259.4
20104-1923 HDS2873 2014 9 194 0.1 7.49 10.22 G0V 201025.46-192259.4

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