18444+2015 ALD   4AB

 
 
18H 44M 35.48S +20 23' 00.7" P.A. 338 SEP 4.1 MAG 11.70,12.20 SP F2
 
 
Coord 2000
18444+2015
Discov num
ALD   4
Comp
AB
Coord arcsec 2000
18 44 35.48 +20 23 00.7
Date first
1916
Date last
2014
Obs
4
Pa first
339
Pa last
338
P.A. Now (θ)
338°
Sep first
3.9
Sep last
4.1
Sep. Now (ρ)
4.1"
Mag pri
11.70
Mag sec
12.20
delta mag (ΔM)
0.5
Spectral class
F2 (yellow-white)
Pri motion ra
+000
Sec motion ra
-023
Pri motion dec
-012
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
18444+2015 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18444+2015 ALD 4 AB 1916 2014 4 338 4.1 11.70 12.20 0.50 <===
Show 18444+2015 DAM 640 AC 1997 2014 3 169 11.0 11.70 13.40 1.70
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
Tycho2
1591-00493-1
HD
349263
last precise pa
338.3
last precise sep
4.14