18016-2740 TDT 641AB

 
 
18h 01m 36.35s -27 40' 04.9" P.A. 130 sep 1.9 mag 9.46,11.08 Sp A2
 
 
Coord 2000
18016-2740
Discov num
TDT 641
Comp
AB
Coord arcsec 2000
18 01 36.35 -27 40 04.9
Date first
1991
Date last
1991
Obs
1
Pa first
130
Pa last
130
P.A. Now (θ)
130°
Sep first
1.9
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
9.46
Mag sec
11.08
delta mag (ΔM)
1.62
Spectral class
A2 (white)
Pri motion ra
+007
Sec motion ra
+007
Pri motion dec
-002
Sec motion dec
-002
Notes
Nature of this double is uncertain.
 
 
18016-2740 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18016-2740 TDT 641 AB 1991 1991 1 130 1.9 9.46 11.08 1.62 <===
Show 18016-2740 STN 38 AC 1877 1999 8 87 6.3 9.46 11.50 2.04
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
129.8
Precise sep
1.91
Constellation
Sagittarius
Tycho2
6850-02699-1
HD
316945
last precise pa
129.8
last precise sep
1.91
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18016-2740 TDT 641 AB 1991 1 130 1.9 9.46 11.08 180136.35-274004.9

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