18420-4050 UC 3643

 
 
18h 41m 57.57s -40 50' 25.1" P.A. 275 sep 23 mag 15.90,16.40
 
 
Coord 2000
18420-4050
Discov num
UC 3643
Comp
Coord arcsec 2000
18 41 57.57 -40 50 25.1
Date first
1998
Date last
2015
Obs
4
Pa first
276
Pa last
275
P.A. Now (θ)
275°
Sep first
22.6
Sep last
23.0
Sep. Now (ρ)
23"
Mag pri
15.90
Mag sec
16.40
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
-041
Sec motion ra
-049
Pri motion dec
-034
Sec motion dec
-013
Notes
V (Proper motion indicates physical)
rPM=0.422
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
275
Precise sep
23.003
Constellation
Corona Austrina
Gaia DR2
39096260608
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18420-4050 UC 3643 1998 2 275 22.9 15.90 16.40 V 184157.57-405025.1
18420-4050 UC 3643 2000 2 275 22.6 15.90 16.40 V 184157.57-405025.1
18420-4050 UC 3643 2010 3 274 23.3 15.90 16.40 V 184157.57-405025.1
18420-4050 UC 3643 2015 4 275 23.0 15.90 16.40 V 184157.57-405025.1

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