18156+4417 ES 1420AB

 
 
18h 15m 33.41s +44 16' 59.6" P.A. 66 sep 8.4 mag 10.22,11.40 Sp A0
 
 
Coord 2000
18156+4417
Discov num
ES 1420
Comp
AB
Coord arcsec 2000
18 15 33.41 +44 16 59.6
Date first
1893
Date last
2010
Obs
8
Pa first
66
Pa last
66
P.A. Now (θ)
66°
Sep first
8.5
Sep last
8.4
Sep. Now (ρ)
8.4"
Mag pri
10.22
Mag sec
11.40
delta mag (ΔM)
1.18
Spectral class
A0 (white)
Pri motion ra
-003
Sec motion ra
-005
Pri motion dec
+013
Sec motion dec
+012
Notes
rPM=0.168 (< 0.3, Physical double)
This double is physical.
 
 
18156+4417 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 47341 18156+4417 ES 1420 AB 1893 2010 8 66 8.4 10.22 11.40 1.18 <===
Show 47341 18156+4417 ES 1420 AC 1915 2010 5 9 14.8 10.22 14.50 4.28
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
65.5
Precise sep
8.38
Constellation
Lyra
SAO
47341
Tycho2
3115-01661-1
last precise pa
65.5
last precise sep
8.38
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18156+4417 ES 1420 AB 2006 6 67 9.3 10.22 11.40 A0 D 181533.41+441659.6
18156+4417 ES 1420 AB 2010 8 66 8.4 10.22 11.40 A0 181533.41+441659.6

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