18349+2717 COU 639

 
 
18h 34m 51.83s +27 16' 59.9" P.A. 268 sep 0.7 mag 10.96,11.16 Sp K0
 
 
Coord 2000
18349+2717
Discov num
COU 639
Comp
Coord arcsec 2000
18 34 51.83 +27 16 59.9
Date first
1971
Date last
2016
Obs
4
Pa first
281
Pa last
268
P.A. Now (θ)
268°
Sep first
0.6
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
10.96
Mag sec
11.16
delta mag (ΔM)
0.2
Spectral class
K0 (yellow-orange)
Pri motion ra
-039
Sec motion ra
-039
Pri motion dec
-052
Sec motion dec
-052
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
267.8
Precise sep
0.73
Constellation
Lyra
Tycho2
2115-01179-1
HD
336446
last precise pa
267.8
last precise sep
0.73
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18349+2717 COU 639 1991 2 261 0.5 10.96 11.16 K0 183451.83+271659.9
18349+2717 COU 639 2008 3 270 0.7 10.96 11.16 K0 183451.83+271659.9
18349+2717 COU 639 2016 4 268 0.7 10.96 11.16 K0 183451.83+271659.9

If you need more information about this double, apply for a data request form to the WDS.