21041+0359 TOK 371

 
 
21h 04m 05.69s +03 58' 50.4" P.A. 238.9 sep 0.13 mag 8.42,9.00 Sp G5 dist. 65.75 pc (214.48 l.y.)
 
 
Coord 2000
21041+0359
Discov num
TOK 371
Comp
Coord arcsec 2000
21 04 05.69 +03 58 50.4
Date first
2012
Date last
2017
Obs
7
Pa first
110
Pa last
215
P.A. Now (θ)
238.9°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
8.42
Mag sec
9.00
delta mag (ΔM)
0.58
Spectral class
G5 (yellow)
Pri motion ra
-071
Sec motion ra
Pri motion dec
-156
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
214.6
Precise sep
0.13
Constellation
Equuleus
HIP
103983
Tycho2
0534-00970-1
HD
200565
BD
BD+03 4493
Distance
65.75
Distance ly
214.48
last precise pa
214.6
last precise sep
0.13
 
 
ORBITAL ELEMENTS
 
 
Period (P)13.3y Periastron (T)2011.21y Semi-major axis (a)0.104a
Eccentricity (e)0.29 Inclination (i)20.4° Longitude of periastron (ω)319.8°
Node (Ω)79.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.092 127.0
2001 0.103 154.9
2002 0.114 177.4
2003 0.123 196.1
2004 0.129 212.7
2005 0.131 228.1
2006 0.129 243.5
2007 0.122 260.0
2008 0.110 279.4
2009 0.093 304.8
2010 0.077 341.5
2011 0.071 30.7
2012 0.078 78.9
2013 0.088 117.2
2014 0.099 147.2
2015 0.110 171.1
2016 0.120 190.8
2017 0.127 207.9
2018 0.131 223.6
2019 0.130 238.9
2020 0.125 254.9
2021 0.114 273.2
2022 0.099 296.3
2023 0.082 329.0
2024 0.072 15.2
2025 0.075 65.3
2026 0.085 106.7
2027 0.096 138.9
2028 0.107 164.4
2029 0.117 185.2
2030 0.126 203.0

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

grafico orbita





wds21041%2B0359a.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
21041+0359 TOK 371 2012 2 112 0.1 8.42 9.00 G5 N 210405.69+035850.4
21041+0359 TOK 371 2014 4 170 0.1 8.42 9.00 G5 N 210405.69+035850.4
21041+0359 TOK 371 2015 5 182 0.1 8.42 9.00 G5 N 210405.69+035850.4
21041+0359 TOK 371 2017 7 215 0.1 8.42 9.00 G5 N 210405.69+035850.4

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