20170+1716 OSO 123AC

 
 
20h 17m 01.33s +17 15' 45.9" P.A. 349.00 sep 17.9 mag 10.61,14.20 Sp K5
 
 
Coord 2000
20170+1716
Discov num
OSO 123
Comp
AC
Coord arcsec 2000
20 17 01.33 +17 15 45.9
Date first
1994
Date last
2015
Obs
11
Pa first
333
Pa last
349
P.A. Now (θ)
349°
Sep first
15.0
Sep last
17.9
Sep. Now (ρ)
17.9"
Mag pri
10.61
Mag sec
14.20
delta mag (ΔM)
3.59
Spectral class
K5 (yellow-orange)
Pri motion ra
-169
Sec motion ra
Pri motion dec
-208
Sec motion dec
Notes
N (See Notes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
20170+1716 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20170+1716 OSO 123 AB 1994 1994 2 264 10.0 10.61 18.30 7.69
Show 20170+1716 OSO 123 AC 1994 2015 11 349 17.9 10.61 14.20 3.59 <===
Show 20170+1716 OSO 123 AD 1994 2015 11 99 21.1 10.61 13.30 2.69
Show 20170+1716 OSO 123 AE 1994 2014 8 44 26.2 10.61 18.30 7.69
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
348.7
Precise sep
17.911
Constellation
Sagitta
Tycho2
1635-00284-1
Gaia DR2
10169472256
HD
351944
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20170+1716 OSO 123 AC 1998 3 336 15.5 10.61 14.20 N D 201701.33+171545.9
20170+1716 OSO 123 AC 2001 4 339 15.8 10.61 14.20 N D 201701.33+171545.9
20170+1716 OSO 123 AC 2015 11 349 17.9 10.61 14.20 K5 N 201701.33+171545.9

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