18421-5554 UC 3646

 
 
18h 42m 06.95s -55 54' 25.6" P.A. 306 sep 21.9 mag 13.60,15.41 Sp M3.5V+M5
 
 
Coord 2000
18421-5554
Discov num
UC 3646
Comp
Coord arcsec 2000
18 42 06.95 -55 54 25.6
Date first
1998
Date last
2015
Obs
4
Pa first
306
Pa last
306
P.A. Now (θ)
306°
Sep first
21.9
Sep last
21.9
Sep. Now (ρ)
21.9"
Mag pri
13.60
Mag sec
15.41
delta mag (ΔM)
1.81
Spectral class
M3.5V+M5 (red/red)
Pri motion ra
+010
Sec motion ra
+013
Pri motion dec
-081
Sec motion dec
-074
Notes
V (Proper motion indicates physical)
rPM=0.093 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
305.8
Precise sep
21.92
Cdsa2 id
UC 3646
Constellation
Telescopium
Ra deg
18.701930555555556
De deg
-55.90711111111111
last precise pa
305.8
last precise sep
21.92
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18421-5554 UC 3646 1999 2 306 21.9 13.60 15.40 V 184206.95-555425.6
18421-5554 UC 3646 2000 2 306 21.9 13.60 15.40 V 184206.95-555425.6
18421-5554 UC 3646 2010 3 306 21.9 13.60 15.41 M3.5V+M5 V 184206.95-555425.6
18421-5554 UC 3646 2015 4 306 21.9 13.60 15.41 M3.5V+M5 V 184206.95-555425.6

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