18066-1712 HJ 2818

 
 
18h 06m 33.61s -17 12' 00.3" P.A. 139 sep 17.8 mag 9.36,10.86 Sp B0III
 
 
Coord 2000
18066-1712
Discov num
HJ 2818
Comp
Coord arcsec 2000
18 06 33.61 -17 12 00.3
Date first
1830
Date last
2008
Obs
10
Pa first
144
Pa last
139
P.A. Now (θ)
139°
Sep first
12.0
Sep last
17.8
Sep. Now (ρ)
17.8"
Mag pri
9.36
Mag sec
10.86
delta mag (ΔM)
1.5
Spectral class
B0III (blue-white)
Pri motion ra
-001
Sec motion ra
+007
Pri motion dec
+002
Sec motion dec
-004
Notes
rPM=1.24
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
139.1
Precise sep
17.82
Constellation
Sagittarius
SAO
161073
Tycho2
6255-02254-1
HD
312603
last precise pa
139.1
last precise sep
17.82
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18066-1712 HJ 2818 1998 8 140 17.6 9.36 10.86 B0III D 180633.61-171200.3
18066-1712 HJ 2818 2008 9 139 17.8 9.36 10.86 B0III D 180633.61-171200.3

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