00219-2300 RST5493BC

 
 
00h 21m 52.67s -23 00' 23.2" P.A. 91.70 sep 0.1 mag 9.90,9.90 dist. 59.49 pc (194.06 l.y.)
 
 
Coord 2000
00219-2300
Discov num
RST5493
Comp
BC
Coord arcsec 2000
00 21 52.67 -23 00 23.2
Date first
1949
Date last
2020
Obs
13
Pa first
91
Pa last
93
P.A. Now (θ)
91.7°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
9.90
Mag sec
9.90
delta mag (ΔM)
0
Spectral class
Pri motion ra
+133
Sec motion ra
+133
Pri motion dec
-115
Sec motion dec
-115
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
00219-2300 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 166213 00 21 52 -23 00 28 HJ 1957 A,BC 2016 44 27 6.1 7.67 9.15 1.48
Show 166213 00 21 53 -23 00 23 RST 5493 BC 2020 13 92 0.1 9.90 9.90 0.00 Y <===
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
92.7
Precise sep
0.094
Spectr
G1V
Constellation
Cetus
SAO
166213
HIP
1732
Tycho2
6413-00769-1
Gaia DR2
2360329587101891072
HD
1766
ADS
302
CD
CD-23 111
Distance
59.49
Distance ly
194.06
last precise pa
92.7
last precise sep
0.094
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.44y± 0.56 Periastron (T)2019.53y± 0.45 Semi-major axis (a)0.134a± 0.02
Eccentricity (e)0.831± 0.034 Inclination (i)92.1°± 1.7 Longitude of periastron (ω)213.6°± 16
Node (Ω)91.3°± 1.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2021
label rho theta
2000 0.008 67.0
2001 0.024 271.3
2002 0.069 92.2
2003 0.124 91.4
2004 0.158 91.1
2005 0.182 90.8
2006 0.198 90.6
2007 0.207 90.4
2008 0.211 90.3
2009 0.211 90.1
2010 0.207 90.0
2011 0.198 89.8
2012 0.186 89.6
2013 0.170 89.4
2014 0.150 89.1
2015 0.126 88.7
2016 0.098 88.1
2017 0.065 87.0
2018 0.026 82.9
2019 0.017 277.2
2020 0.033 93.6
2021 0.103 91.7
2022 0.145 91.2
2023 0.173 90.9
2024 0.192 90.7
2025 0.204 90.5
2026 0.210 90.4
2027 0.212 90.2
2028 0.209 90.0
2029 0.202 89.9
2030 0.192 89.7


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



 
 


wds00219-2300a.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
00219-2300 RST5493 BC 1978 6 90 0.1 9.90 9.90 002106.67-230000.0
00219-2300 RST5493 BC 2008 7 90 0.2 9.90 9.90 002152.67-230023.2
00219-2300 RST5493 BC 2011 9 90 0.2 9.90 9.90 N 002152.67-230023.2
00219-2300 RST5493 BC 2015 10 88 0.1 9.90 9.90 N 002152.67-230023.2
00219-2300 RST5493 BC 2017 12 85 0.0 9.90 9.90 N 002152.67-230023.2

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