18557-1646 J  1661

 
 
18h 55m 38.49s -16 47' 09.1" P.A. 99 sep 4.5 mag 11.22,13.20
 
 
Coord 2000
18557-1646
Discov num
J  1661
Comp
Coord arcsec 2000
18 55 38.49 -16 47 09.1
Date first
1941
Date last
2000
Obs
5
Pa first
100
Pa last
99
P.A. Now (θ)
99°
Sep first
3.0
Sep last
4.5
Sep. Now (ρ)
4.5"
Mag pri
11.22
Mag sec
13.20
delta mag (ΔM)
1.98
Spectral class
Pri motion ra
-016
Sec motion ra
+119
Pri motion dec
-001
Sec motion dec
-024
Notes
rPM=1.128
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
98.6
Precise sep
4.505
Cdsa2 id
J 1661
Constellation
Sagittarius
Ra deg
18.927358333333334
De deg
-16.785861111111114
last precise pa
98.6
last precise sep
4.505
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18557-1646 J 1661 1998 3 99 4.4 11.22 13.20 D 185538.49-164709.1
18557-1646 J 1661 2000 5 99 4.5 11.22 13.20 D 185538.49-164709.1

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