17174+4221 SKF2735AC

 
 
17h 17m 26.46s +42 20' 54.7" P.A. 134 sep 2.4 mag 15.20,19.50 Sp K:+DB
 
 
Coord 2000
17174+4221
Discov num
SKF2735
Comp
AC
Coord arcsec 2000
17 17 26.46 +42 20 54.7
Date first
2005
Date last
2015
Obs
2
Pa first
139
Pa last
134
P.A. Now (θ)
134°
Sep first
2.7
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
15.20
Mag sec
19.50
delta mag (ΔM)
4.3
Spectral class
K:+DB (yellow-orange)
Pri motion ra
+015
Sec motion ra
Pri motion dec
-013
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
17174+4221 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17174+4221 SKF2735 AB 1954 2015 8 299 14.2 15.20 16.30 1.10
Show 17174+4221 SKF2735 AC 2005 2015 2 134 2.4 15.20 19.50 4.30 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
133.7
Precise sep
2.42
Constellation
Hercules
last precise pa
133.7
last precise sep
2.42
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17174+4221 SKF2735 AC 2005 1 139 2.7 15.20 19.50 K:+DB 171726.46+422054.7
17174+4221 SKF2735 AC 2015 2 134 2.4 15.20 19.50 K:+DB 171726.46+422054.7

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