17340-7808 HJ 4937AB,C

 
 
17H 33M 59.78S -78 08' 08.1" P.A. 223 SEP 34.7 MAG 9.35,12.84 SP A4V
 
 
Coord 2000
17340-7808
Discov num
HJ 4937
Comp
AB,C
Coord arcsec 2000
17 33 59.78 -78 08 08.1
Date first
1835
Date last
2000
Obs
4
Pa first
229
Pa last
223
P.A. Now (θ)
223°
Sep first
30.0
Sep last
34.7
Sep. Now (ρ)
34.7"
Mag pri
9.35
Mag sec
12.84
delta mag (ΔM)
3.49
Spectral class
A4V (white)
Pri motion ra
-004
Sec motion ra
-001
Pri motion dec
-012
Sec motion dec
-028
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
222.9
last precise sep
34.67