18164-4028 I  1020

 
 
18h 16m 23.15s -40 28' 19.7" P.A. 273 sep 0.5 mag 8.20,7.97 Sp B7V dist. 515.46 pc (1681.43 l.y.)
 
 
Coord 2000
18164-4028
Discov num
I  1020
Comp
Coord arcsec 2000
18 16 23.15 -40 28 19.7
Date first
1910
Date last
2016
Obs
15
Pa first
310
Pa last
273
P.A. Now (θ)
273°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
8.20
Mag sec
7.97
delta mag (ΔM)
0.23
Spectral class
B7V (blue-white)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-006
Sec motion dec
-006
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
273
Precise sep
0.48
Constellation
Corona Austrina
SAO
228864
HIP
89552
Tycho2
7904-01875-1
HD
167297
CD
CD-4012327
CP
CP-40 8515
Distance
515.46
Distance ly
1681.43
last precise pa
273
last precise sep
0.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18164-4028 I 1020 1991 12 282 0.4 8.20 7.97 B7V D 181623.15-402819.7
18164-4028 I 1020 2008 13 95 0.4 8.20 7.97 B7V D 181623.15-402819.7
18164-4028 I 1020 2016 15 273 0.5 8.20 7.97 B7V 181623.15-402819.7

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