21498+0023 UC 4576

 
 
21h 49m 50.88s +00 22' 33.2" P.A. 339.00 sep 13.2 mag 15.30,16.50
 
 
Coord 2000
21498+0023
Discov num
UC 4576
Comp
Coord arcsec 2000
21 49 50.88 +00 22 33.2
Date first
1998
Date last
2016
Obs
7
Pa first
339
Pa last
339
P.A. Now (θ)
339°
Sep first
13.2
Sep last
13.2
Sep. Now (ρ)
13.2"
Mag pri
15.30
Mag sec
16.50
delta mag (ΔM)
1.2
Spectral class
Pri motion ra
+047
Sec motion ra
+052
Pri motion dec
-030
Sec motion dec
-031
Notes
V (Proper motion indicates physical)
rPM=0.084 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
339.2
Precise sep
13.187
Constellation
Hydra
SAO
127093
Gaia DR2
2681215355519557760
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21498+0023 UC 4576 2000 2 339 13.2 15.30 16.50 V 214950.88+002233.2
21498+0023 UC 4576 2010 4 339 13.0 15.30 16.50 V 214950.88+002233.2
21498+0023 UC 4576 2015 5 339 13.2 15.30 16.50 V 214950.88+002233.2

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