21167+0731 HDS3030

 
 
21h 16m 40.05s +07 30' 53.2" P.A. 285 sep 0.2 mag 7.82,8.99 Sp F2 dist. 117.1 pc (381.98 l.y.)
 
 
Coord 2000
21167+0731
Discov num
HDS3030
Comp
Coord arcsec 2000
21 16 40.05 +07 30 53.2
Date first
1991
Date last
2017
Obs
7
Pa first
285
Pa last
285
P.A. Now (θ)
285°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
7.82
Mag sec
8.99
delta mag (ΔM)
1.17
Spectral class
F2 (yellow-white)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-042
Sec motion dec
Notes
X (Dubious double)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
285.2
Precise sep
0.187
Cdsa2 id
HDS 3030
Constellation
Equuleus
HIP
105049
HD
202586
Ra deg
21.277791666666666
De deg
7.514777777777778
Distance
117.1
Distance ly
381.98
last precise pa
285.2
last precise sep
0.187
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21167+0731 HDS3030 1991 1 285 0.1 7.82 8.99 F2 X 211640.05+073053.2
21167+0731 HDS3030 2008 5 291 0.1 7.82 8.99 F2 XD 211640.05+073053.2
21167+0731 HDS3030 2015 6 286 0.2 7.82 8.99 F2 X 211640.05+073053.2
21167+0731 HDS3030 2017 7 285 0.2 7.82 8.99 F2 X 211640.05+073053.2

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