18281-2228 ARA1888

18h 28m 10.55s -22 28' 02.2" P.A. 250 sep 13.7 mag 12.60,13.40

Coord 2000
18281-2228
Discov num
ARA1888
Comp
Coord arcsec 2000
18 28 10.55 -22 28 02.2
Date first
1928
Date last
1999
Obs
4
Pa first
252
Pa last
250
P.A. Now (θ)
250°
Sep first
14.2
Sep last
13.7
Sep. Now (ρ)
13.7"
Mag pri
12.60
Mag sec
13.40
delta mag (ΔM)
0.8
Spectral class
Pri motion ra
+005
Sec motion ra
-012
Pri motion dec
+000
Sec motion dec
+004
Notes


rPM=1.381

This double is not physical.



OTHER CATALOGS AND DESIGNATIONS

Precise pa
250.1
Precise sep
13.661
Constellation
Sagittarius
last precise pa
250.1
last precise sep
13.661




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18281-2228 ARA1888 1998 2 250 13.6 12.60 13.40 D 182810.55-222802.2
18281-2228 ARA1888 1999 3 250 13.7 12.60 13.40 D 182810.55-222802.2
18281-2228 ARA1888 2010 5 247 13.5 12.60 13.40 182810.55-222802.2

If you need more information about this double, apply for a data request form to the WDS.