17340-7808 DAW 217AB,D

 
 
17H 33M 59.78S -78 08' 08.1" P.A. 185 SEP 31.8 MAG 8.47,14.80 SP A4V
 
 
Coord 2000
17340-7808
Discov num
DAW 217
Comp
AB,D
Coord arcsec 2000
17 33 59.78 -78 08 08.1
Date first
1918
Date last
2000
Obs
3
Pa first
189
Pa last
185
P.A. Now (θ)
185°
Sep first
32.1
Sep last
31.8
Sep. Now (ρ)
31.8"
Mag pri
8.47
Mag sec
14.80
delta mag (ΔM)
6.33
Spectral class
A4V (white)
Pri motion ra
-004
Sec motion ra
+006
Pri motion dec
-012
Sec motion dec
-022
Notes
Nature of this double is uncertain.
 
 
17340-7808 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 257508 17340-7808 RST3093 AB 1933 1991 3 246 0.4 8.85 9.52 0.67
Show 257508 17340-7808 HJ 4937 AB,C 1835 2000 4 223 34.7 9.35 12.84 3.49
Show 257508 17340-7808 DAW 217 AB,D 1918 2000 3 185 31.8 8.47 14.80 6.33 <===
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Apus
SAO
257508
Tycho2
9448-01415-1
HD
157512
last precise pa
184.9
last precise sep
31.76