18317+2310 HU  321AB

 
 
18h 31m 41.82s +23 09' 40.2" P.A. 21 sep 20.6 mag 9.60,11.10 Sp G5
 
 
Coord 2000
18317+2310
Discov num
HU  321
Comp
AB
Coord arcsec 2000
18 31 41.82 +23 09 40.2
Date first
1901
Date last
2015
Obs
24
Pa first
342
Pa last
21
P.A. Now (θ)
21°
Sep first
4.3
Sep last
20.6
Sep. Now (ρ)
20.6"
Mag pri
9.60
Mag sec
11.10
delta mag (ΔM)
1.5
Spectral class
G5 (yellow)
Pri motion ra
-069
Sec motion ra
+006
Pri motion dec
-122
Sec motion dec
+010
Notes
N L (See Notes, Linear solution)
rPM=1.083
This double is not physical.
 
 
18317+2310 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18317+2310 HU 321 AB 1901 2015 24 21 20.6 9.60 11.10 1.50 <===
Show 18317+2310 HU 321 AC 1894 2015 11 342 74.4 9.60 12.10 2.50
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21
Precise sep
20.55
Constellation
Hercules
Tycho2
2106-00298-1
HD
342464
last precise pa
21
last precise sep
20.55
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18317+2310 HU 321 AB 2000 16 20 18.3 9.60 11.10 G5 N D 183141.82+230940.2
18317+2310 HU 321 AB 2011 16 21 20.0 9.60 11.10 G5 NLD 183141.82+230940.2
18317+2310 HU 321 AB 2013 22 21 20.3 9.60 11.10 G5 NL 183141.82+230940.2
18317+2310 HU 321 AB 2015 24 21 20.6 9.60 11.10 G5 NL 183141.82+230940.2

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