02166-5026 TOK 185

 
 
02h 16m 36.08s -50 25' 42.8" P.A. 118.30 sep 0.1 mag 9.90,9.90 Sp G5V dist. 59.35 pc (193.6 l.y.)
 
 
Coord 2000
02166-5026
Discov num
TOK 185
Comp
Coord arcsec 2000
02 16 36.08 -50 25 42.8
Date first
2011
Date last
2019
Obs
16
Pa first
201
Pa last
127
P.A. Now (θ)
118.3°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.09"
Mag pri
9.90
Mag sec
9.90
delta mag (ΔM)
0
Spectral class
G5V (yellow)
Pri motion ra
-073
Sec motion ra
Pri motion dec
-138
Sec motion dec
Notes
O (Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
126.6
Precise sep
0.077
Constellation
Eridanus
SAO
232697
HIP
10611
Tycho2
8055-00034-1
Gaia DR2
97305873792
HD
14239
CD
CD-51 558
CP
CP-51 298
Distance
59.35
Distance ly
193.6
last precise pa
126.6
last precise sep
0.077
 
 
ORBITAL ELEMENTS
 
 
Period (P)11.29y± 0.46 Periastron (T)2014.17y± 0.36 Semi-major axis (a)0.0908a± 0.002
Eccentricity (e)0.066± 0.031 Inclination (i)45.3°± 1.9 Longitude of periastron (ω)31.8°± 10.7
Node (Ω)270.4°± 4.8 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2018
label rho theta
2000 0.069 210.8
2001 0.080 244.2
2002 0.086 270.3
2003 0.077 297.6
2004 0.063 335.9
2005 0.065 23.4
2006 0.081 58.6
2007 0.094 82.3
2008 0.094 102.6
2009 0.083 125.6
2010 0.070 157.7
2011 0.067 199.2
2012 0.077 235.6
2013 0.085 263.0
2014 0.081 289.0
2015 0.067 323.2
2016 0.062 10.1
2017 0.076 50.0
2018 0.091 76.1
2019 0.096 96.7
2020 0.087 118.3
2021 0.073 147.1
2022 0.066 186.9
2023 0.074 226.2
2024 0.084 255.6
2025 0.084 281.1
2026 0.071 311.8
2027 0.061 356.0
2028 0.071 40.2
2029 0.088 69.4
2030 0.096 90.9

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






wds02166-5026f.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
02166-5026 TOK 185 2011 2 17 0.1 9.90 9.90 G5V 021636.08-502542.8
02166-5026 TOK 185 2013 5 284 0.1 9.90 9.90 G5V 021636.08-502542.8
02166-5026 TOK 185 2015 7 324 0.1 9.90 9.90 G5V O 021636.08-502542.8
02166-5026 TOK 185 2017 12 70 0.1 9.90 9.90 G5V O 021636.08-502542.8
02166-5026 TOK 185 2018 14 93 0.1 9.90 9.90 G5V O 021636.08-502542.8
02166-5026 TOK 185 2019 16 127 0.1 9.90 9.90 G5V O 021636.08-502542.8

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