21218-3014 UC 4457

 
 
21h 21m 45.09s -30 13' 42.8" P.A. 240 sep 34.6 mag 11.54,14.52
 
 
Coord 2000
21218-3014
Discov num
UC 4457
Comp
Coord arcsec 2000
21 21 45.09 -30 13 42.8
Date first
1999
Date last
2015
Obs
4
Pa first
240
Pa last
240
P.A. Now (θ)
240°
Sep first
34.7
Sep last
34.6
Sep. Now (ρ)
34.6"
Mag pri
11.54
Mag sec
14.52
delta mag (ΔM)
2.98
Spectral class
Pri motion ra
+079
Sec motion ra
+081
Pri motion dec
+017
Sec motion dec
+018
Notes
V (Proper motion indicates physical)
rPM=0.027 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
239.5
Precise sep
34.645
Constellation
Microscopium
last precise pa
239.5
last precise sep
34.645
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21218-3014 UC 4457 1999 2 240 34.7 11.50 14.50 V 212145.09-301342.8
21218-3014 UC 4457 2000 2 240 34.7 11.50 14.50 V 212145.09-301342.8
21218-3014 UC 4457 2010 3 240 34.7 11.54 14.52 V 212145.09-301342.8
21218-3014 UC 4457 2015 4 240 34.6 11.54 14.52 V 212145.09-301342.8

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