18456+6404 ES 1840

 
 
18h 45m 35.59s +64 04' 02.7" P.A. 216 sep 9.1 mag 9.69,11.26 Sp A2
 
 
Coord 2000
18456+6404
Discov num
ES 1840
Comp
Coord arcsec 2000
18 45 35.59 +64 04 02.7
Date first
1898
Date last
2010
Obs
9
Pa first
222
Pa last
216
P.A. Now (θ)
216°
Sep first
8.2
Sep last
9.1
Sep. Now (ρ)
9.1"
Mag pri
9.69
Mag sec
11.26
delta mag (ΔM)
1.57
Spectral class
A2 (white)
Pri motion ra
+004
Sec motion ra
+005
Pri motion dec
-001
Sec motion dec
-007
Notes
rPM=0.707
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
216
Precise sep
9.12
Constellation
Draco
SAO
18008
Tycho2
4223-01127-1
last precise pa
216
last precise sep
9.12
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18456+6404 ES 1840 1999 7 216 9.1 9.69 11.26 A2 D 184535.59+640402.7
18456+6404 ES 1840 2010 8 216 9.1 9.69 11.26 A2 D 184535.59+640402.7

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