20073-5127 RST1059

 
 
20h 07m 19.23s -51 27' 01.3" P.A. 247.00 sep 0.1 mag 8.89,9.03 Sp F2IV dist. 274.73 pc (896.17 l.y.)
 
 
Coord 2000
20073-5127
Discov num
RST1059
Comp
Coord arcsec 2000
20 07 19.23 -51 27 01.3
Date first
1930
Date last
2019
Obs
13
Pa first
32
Pa last
236
P.A. Now (θ)
247°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.12"
Mag pri
8.89
Mag sec
9.03
delta mag (ΔM)
0.14
Spectral class
F2IV (yellow-white)
Pri motion ra
+015
Sec motion ra
Pri motion dec
-019
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
236.1
Precise sep
0.124
Constellation
Telescopium
SAO
246442
HIP
99114
Tycho2
8404-00697-1
Gaia DR2
35371587456
HD
190444
CD
CD-5112382
CP
CP-5111420
Distance
274.73
Distance ly
896.17
last precise pa
236.1
last precise sep
0.124
 
 
ORBITAL ELEMENTS
 
 
Period (P)155y± 24 Periastron (T)2016.8y± 6.5 Semi-major axis (a)0.175a± 0.011
Eccentricity (e)0.294± 0.048 Inclination (i)32.6°± 6.5 Longitude of periastron (ω)154°± 59
Node (Ω)77°± 27 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.121 163.1
2001 0.119 167.1
2002 0.118 171.1
2003 0.116 175.3
2004 0.115 179.6
2005 0.115 183.9
2006 0.114 188.3
2007 0.114 192.7
2008 0.114 197.2
2009 0.114 201.6
2010 0.114 206.0
2011 0.115 210.4
2012 0.115 214.7
2013 0.116 219.0
2014 0.117 223.2
2015 0.118 227.4
2016 0.119 231.5
2017 0.120 235.5
2018 0.121 239.4
2019 0.123 243.2
2020 0.124 247.0
2021 0.125 250.7
2022 0.126 254.4
2023 0.127 258.0
2024 0.128 261.5
2025 0.128 265.0
2026 0.129 268.4
2027 0.130 271.9
2028 0.131 275.2
2029 0.131 278.6
2030 0.132 281.9

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






wds20073-5127e.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
20073-5127 RST1059 1991 8 132 0.1 8.89 9.03 F2IV 200719.23-512701.3
20073-5127 RST1059 2008 9 191 0.1 8.89 9.03 F2IV 200719.23-512701.3
20073-5127 RST1059 2015 10 220 0.1 8.89 9.03 F2IV 200719.23-512701.3
20073-5127 RST1059 2017 11 227 0.1 8.89 9.03 F2IV 200719.23-512701.3
20073-5127 RST1059 2018 12 233 0.1 8.89 9.03 F2IV 200719.23-512701.3
20073-5127 RST1059 2019 13 236 0.1 8.89 9.03 F2IV 200719.23-512701.3

If you need more information about this double, apply for a data request form to the WDS.