20178-4011 DUN 230

 
 
20h 17m 49.68s -40 11' 05.1" P.A. 118 sep 9.6 mag 7.42,7.72 Sp F8IV+F7V dist. 80.06 pc (261.16 l.y.)
 
 
Coord 2000
20178-4011
Discov num
DUN 230
Comp
Coord arcsec 2000
20 17 49.68 -40 11 05.1
Date first
1836
Date last
2017
Obs
43
Pa first
119
Pa last
118
P.A. Now (θ)
118°
Sep first
15.0
Sep last
9.6
Sep. Now (ρ)
9.6"
Mag pri
7.42
Mag sec
7.72
delta mag (ΔM)
0.3
Spectral class
F8IV+F7V (yellow-white/yellow-white)
Pri motion ra
+042
Sec motion ra
+042
Pri motion dec
+012
Sec motion dec
+012
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
117.6
Precise sep
9.641
Constellation
Sagittarius
SAO
230134
HIP
100045
Tycho2
7952-02340-1
Gaia DR2
44253828480
HD
192724
CD
CD-4013785
CP
CP-40 9268
Distance
80.06
Distance ly
261.16
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20178-4011 DUN 230 2000 34 117 9.7 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2008 35 118 9.7 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2010 36 112 9.9 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2015 40 117 9.7 7.42 7.72 F8IV+F7V 201749.68-401105.1

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