18013-6921 TDT 638AB

 
 
18h 01m 19.97s -69 21' 09.7" P.A. 84 sep 0.6 mag 11.81,12.26
 
 
Coord 2000
18013-6921
Discov num
TDT 638
Comp
AB
Coord arcsec 2000
18 01 19.97 -69 21 09.7
Date first
1991
Date last
1991
Obs
1
Pa first
84
Pa last
84
P.A. Now (θ)
84°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.6"
Mag pri
11.81
Mag sec
12.26
delta mag (ΔM)
0.45
Spectral class
Pri motion ra
-007
Sec motion ra
-007
Pri motion dec
-027
Sec motion dec
-027
Notes
Nature of this double is uncertain.
 
 
18013-6921 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18013-6921 TDT 638 AB 1991 1991 1 84 0.6 11.81 12.26 0.45 <===
Show 18013-6921 CVR 7 AB,C 1998 2000 2 234 8.6 11.40 15.20 3.80
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
84
Precise sep
0.59
Constellation
Apus
Tycho2
9290-00459-1
last precise pa
84
last precise sep
0.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18013-6921 TDT 638 AB 1991 1 84 0.6 11.81 12.26 180119.97-692109.7

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