17091-1815 HJ 4923

 
 
17h 09m 07.52s -18 15' 22.8" P.A. 147 sep 16.3 mag 8.53,10.67 Sp A7III
 
 
Coord 2000
17091-1815
Discov num
HJ 4923
Comp
Coord arcsec 2000
17 09 07.52 -18 15 22.8
Date first
1879
Date last
2015
Obs
22
Pa first
168
Pa last
147
P.A. Now (θ)
147°
Sep first
7.5
Sep last
16.3
Sep. Now (ρ)
16.3"
Mag pri
8.53
Mag sec
10.67
delta mag (ΔM)
2.14
Spectral class
A7III (white)
Pri motion ra
-006
Sec motion ra
+043
Pri motion dec
-012
Sec motion dec
-064
Notes
L (Linear solution)
rPM=0.927
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
147.4
Precise sep
16.254
Constellation
Ophiuchus
SAO
160317
Tycho2
6236-00750-1
Gaia DR2
62761024640
HD
154922
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17091-1815 HJ 4923 2007 18 148 15.7 8.53 10.67 A7III LD 170907.52-181522.8
17091-1815 HJ 4923 2008 19 148 15.8 8.53 10.67 A7III LD 170907.52-181522.8
17091-1815 HJ 4923 2010 21 148 15.6 8.53 10.67 A7III L 170907.52-181522.8
17091-1815 HJ 4923 2015 22 147 16.3 8.53 10.67 A7III L 170907.52-181522.8

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