18311-2738 J  1632

 
 
18h 31m 05.21s -27 38' 09.9" P.A. 166 sep 5.3 mag 12.42,12.75
 
 
Coord 2000
18311-2738
Discov num
J  1632
Comp
Coord arcsec 2000
18 31 05.21 -27 38 09.9
Date first
1913
Date last
2010
Obs
7
Pa first
169
Pa last
166
P.A. Now (θ)
166°
Sep first
4.5
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
12.42
Mag sec
12.75
delta mag (ΔM)
0.33
Spectral class
Pri motion ra
-009
Sec motion ra
+013
Pri motion dec
+047
Sec motion dec
-066
Notes
B (Blue magnitudes)
rPM=1.711
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
165.6
Precise sep
5.25
Constellation
Sagittarius
last precise pa
165.6
last precise sep
5.25
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18311-2738 J 1632 1998 3 165 5.3 12.42 12.75 DB 183105.21-273809.9
18311-2738 J 1632 1999 4 165 5.3 12.42 12.75 DB 183105.21-273809.9
18311-2738 J 1632 2010 7 166 5.3 12.42 12.75 B 183105.21-273809.9

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