18173+4355 A   577

 
 
18h 17m 19.29s +43 55' 15.0" P.A. 301 sep 0.7 mag 10.45,10.57 Sp A5
 
 
Coord 2000
18173+4355
Discov num
A   577
Comp
Coord arcsec 2000
18 17 19.29 +43 55 15.0
Date first
1903
Date last
2008
Obs
12
Pa first
283
Pa last
301
P.A. Now (θ)
301°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
10.45
Mag sec
10.57
delta mag (ΔM)
0.12
Spectral class
A5 (white)
Pri motion ra
+001
Sec motion ra
+001
Pri motion dec
+008
Sec motion dec
+008
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
300.8
Precise sep
0.699
Constellation
Lyra
SAO
47363
Tycho2
3115-01404-1
last precise pa
300.8
last precise sep
0.699
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18173+4355 A 577 1991 11 296 0.4 10.45 10.57 A5 181719.29+435515.0
18173+4355 A 577 2008 12 301 0.7 10.45 10.57 A5 181719.29+435515.0

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