18509-0821 J  1638

 
 
18h 50m 55.60s -08 20' 57.1" P.A. 264 sep 7.9 mag 11.20,11.20
 
 
Coord 2000
18509-0821
Discov num
J  1638
Comp
Coord arcsec 2000
18 50 55.60 -08 20 57.1
Date first
1892
Date last
2016
Obs
8
Pa first
261
Pa last
264
P.A. Now (θ)
264°
Sep first
7.8
Sep last
7.9
Sep. Now (ρ)
7.9"
Mag pri
11.20
Mag sec
11.20
delta mag (ΔM)
0
Spectral class
Pri motion ra
-001
Sec motion ra
-002
Pri motion dec
-004
Sec motion dec
-001
Notes
rPM=0.767
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
263.8
Precise sep
7.92
Constellation
Scutum
Tycho2
5693-03351-1
Gaia DR2
4203923099046828160
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18509-0821 J 1638 1999 4 264 8.1 11.20 11.20 D 185055.60-082057.1
18509-0821 J 1638 2000 5 264 7.9 11.20 11.20 D 185055.60-082057.1
18509-0821 J 1638 2013 6 265 7.9 11.20 11.20 185055.60-082057.1
18509-0821 J 1638 2016 7 264 7.9 11.20 11.20 185055.60-082057.1

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