18423+3616 A  1381

 
 
18h 42m 17.31s +36 16' 16.3" P.A. 93 sep 0.4 mag 10.43,10.37 Sp F8
 
 
Coord 2000
18423+3616
Discov num
A  1381
Comp
Coord arcsec 2000
18 42 17.31 +36 16 16.3
Date first
1906
Date last
2016
Obs
15
Pa first
122
Pa last
93
P.A. Now (θ)
93°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
10.43
Mag sec
10.37
delta mag (ΔM)
0.06
Spectral class
F8 (yellow-white)
Pri motion ra
-007
Sec motion ra
-007
Pri motion dec
-042
Sec motion dec
-042
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
92.9
Precise sep
0.38
Constellation
Lyra
Tycho2
2649-01057-1
last precise pa
92.9
last precise sep
0.38
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18423+3616 A 1381 1994 13 107 0.5 10.43 10.37 F8 184217.31+361616.3
18423+3616 A 1381 2008 14 97 0.4 10.43 10.37 F8 184217.31+361616.3
18423+3616 A 1381 2016 15 93 0.4 10.43 10.37 F8 184217.31+361616.3

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