18027+5552 ES   79AB

 
 
18h 02m 39.77s +55 52' 04.6" P.A. 56 sep 6.3 mag 10.72,12.90 Sp F5
 
 
Coord 2000
18027+5552
Discov num
ES   79
Comp
AB
Coord arcsec 2000
18 02 39.77 +55 52 04.6
Date first
1901
Date last
2015
Obs
11
Pa first
81
Pa last
56
P.A. Now (θ)
56°
Sep first
5.6
Sep last
6.3
Sep. Now (ρ)
6.3"
Mag pri
10.72
Mag sec
12.90
delta mag (ΔM)
2.18
Spectral class
F5 (yellow-white)
Pri motion ra
-006
Sec motion ra
-020
Pri motion dec
-005
Sec motion dec
+020
Notes
Nature of this double is uncertain.
 
 
18027+5552 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18027+5552 ES 79 AB 1901 2015 11 56 6.3 10.72 12.90 2.18 <===
Show 18027+5552 ES 79 AC 1901 2015 18 93 24.7 10.72 10.86 0.14
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Draco
Tycho2
3907-00123-1
HD
238800
last precise pa
55.8
last precise sep
6.28
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18027+5552 ES 79 AB 2000 8 59 6.2 10.72 12.90 F5 D 180239.77+555204.6
18027+5552 ES 79 AB 2011 9 57 6.2 10.72 12.90 F5 D 180239.77+555204.6
18027+5552 ES 79 AB 2015 11 56 6.3 10.72 12.90 F5 180239.77+555204.6

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