18342+4039 ES 1654

 
 
18h 34m 11.59s +40 40' 17.4" P.A. 256 sep 3.3 mag 10.86,13.60
 
 
Coord 2000
18342+4039
Discov num
ES 1654
Comp
Coord arcsec 2000
18 34 11.59 +40 40 17.4
Date first
1917
Date last
2003
Obs
3
Pa first
253
Pa last
256
P.A. Now (θ)
256°
Sep first
3.1
Sep last
3.3
Sep. Now (ρ)
3.3"
Mag pri
10.86
Mag sec
13.60
delta mag (ΔM)
2.74
Spectral class
Pri motion ra
+003
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
256
Precise sep
3.333
Constellation
Lyra
Tycho2
3109-00259-1
last precise pa
256
last precise sep
3.333
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18342+4039 ES 1654 1998 2 252 3.5 10.86 13.60 D 183411.59+404017.4
18342+4039 ES 1654 2003 3 256 3.3 10.86 13.60 D 183411.59+404017.4

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