18409-7204 I   636

 
 
18h 40m 55.38s -72 04' 20.1" P.A. 230 sep 1.1 mag 8.89,10.11 Sp A3V
 
 
Coord 2000
18409-7204
Discov num
I   636
Comp
Coord arcsec 2000
18 40 55.38 -72 04 20.1
Date first
1909
Date last
1991
Obs
6
Pa first
240
Pa last
230
P.A. Now (θ)
230°
Sep first
1.2
Sep last
1.1
Sep. Now (ρ)
1.1"
Mag pri
8.89
Mag sec
10.11
delta mag (ΔM)
1.22
Spectral class
A3V (white)
Pri motion ra
+008
Sec motion ra
+008
Pri motion dec
-012
Sec motion dec
-012
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
230.3
Precise sep
1.128
Constellation
Pavo
Tycho2
9299-00907-1
HD
171310
last precise pa
230.3
last precise sep
1.128
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18409-7204 I 636 1991 6 230 1.1 8.89 10.11 A3V 184055.38-720420.1

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