20002-5522 B   459BC

 
 
20h 00m 14.72s -55 22' 25.0" P.A. 201.9 sep 0.29 mag 10.98,11.07 Sp K1+K1 dist. 68.78 pc (224.36 l.y.)
 
 
Coord 2000
20002-5522
Discov num
B   459
Comp
BC
Coord arcsec 2000
20 00 14.72 -55 22 25.0
Date first
1926
Date last
2015
Obs
14
Pa first
129
Pa last
197
P.A. Now (θ)
201.9°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.29"
Mag pri
10.98
Mag sec
11.07
delta mag (ΔM)
0.09
Spectral class
K1+K1 (yellow-orange/yellow-orange)
Pri motion ra
-014
Sec motion ra
-014
Pri motion dec
+002
Sec motion dec
+002
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
20002-5522 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 246378 20002-5522 I 1041 A,BC 1910 2015 18 40 1.4 9.69 10.20 0.51
Show 246378 20002-5522 B 459 BC 1926 2015 14 202 0.3 10.98 11.07 0.09 Y <===
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
197.3
Precise sep
0.282
Constellation
Telescopium
SAO
246378
HIP
98457
Tycho2
8780-00272-1
HD
188908
CP
CP-55 9275
Distance
68.78
Distance ly
224.36
last precise pa
197.3
last precise sep
0.282
 
 
ORBITAL ELEMENTS
 
 
Period (P)72.78y± 1.2 Periastron (T)2044.56y± 0.5 Semi-major axis (a)0.292a± 0.002
Eccentricity (e)0.229± 0.005 Inclination (i)44.9°± 2 Longitude of periastron (ω)278.7°± 3
Node (Ω)64.6°± 1 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.258 130.1
2001 0.256 134.5
2002 0.254 139.0
2003 0.253 143.5
2004 0.253 148.0
2005 0.253 152.6
2006 0.254 157.1
2007 0.255 161.6
2008 0.257 166.0
2009 0.259 170.4
2010 0.262 174.7
2011 0.265 178.9
2012 0.268 183.0
2013 0.272 187.0
2014 0.275 190.9
2015 0.279 194.7
2016 0.283 198.3
2017 0.287 201.9
2018 0.290 205.4
2019 0.294 208.8
2020 0.296 212.2
2021 0.299 215.5
2022 0.301 218.7
2023 0.302 221.9
2024 0.303 225.1
2025 0.302 228.2
2026 0.301 231.4
2027 0.299 234.7
2028 0.296 238.0
2029 0.292 241.3
2030 0.286 244.8

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

grafico orbita





wds20002-5522b.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
20002-5522 B 459 BC 1991 13 95 0.3 10.98 11.07 O 200014.72-552225.0
20002-5522 B 459 BC 2015 14 197 0.3 10.98 11.07 K1IV NO 200014.72-552225.0

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