20530+1806 UC 4316

 
 
20h 52m 57.71s +18 06' 26.9" P.A. 217 sep 49.4 mag 15.50,15.19
 
 
Coord 2000
20530+1806
Discov num
UC 4316
Comp
Coord arcsec 2000
20 52 57.71 +18 06 26.9
Date first
2000
Date last
2010
Obs
3
Pa first
216
Pa last
217
P.A. Now (θ)
217°
Sep first
49.0
Sep last
49.4
Sep. Now (ρ)
49.4"
Mag pri
15.50
Mag sec
15.19
delta mag (ΔM)
0.31
Spectral class
Pri motion ra
-023
Sec motion ra
-025
Pri motion dec
-055
Sec motion dec
-045
Notes
V (Proper motion indicates physical)
rPM=0.171 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
216.5
Precise sep
49.42
Cdsa2 id
UC 4316
Constellation
Delphinus
Ra deg
20.882697222222223
De deg
18.107472222222224
last precise pa
216.5
last precise sep
49.42
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20530+1806 UC 4316 2000 2 216 49.0 15.50 15.20 V 205257.71+180626.9
20530+1806 UC 4316 2001 2 216 48.9 15.50 15.20 V 205257.71+180626.9
20530+1806 UC 4316 2010 3 217 49.0 15.50 15.19 V 205257.71+180626.9

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