18537+3658 H 6   3 (Del1 Lyr)

 
 
18h 53m 43.56s +36 58' 18.2" P.A. 20 sep 175.3 mag 5.55,9.93 Sp B2.5V dist. 303.95 pc (991.48 l.y.)
 
 
Coord 2000
18537+3658
Discov num
H 6   3
Comp
Coord arcsec 2000
18 53 43.56 +36 58 18.2
Date first
1905
Date last
2012
Obs
16
Pa first
20
Pa last
20
P.A. Now (θ)
20°
Sep first
174.6
Sep last
175.3
Sep. Now (ρ)
175.3"
Mag pri
5.55
Mag sec
9.93
delta mag (ΔM)
4.38
Spectral class
B2.5V (blue-white)
Pri motion ra
+001
Sec motion ra
+005
Pri motion dec
-003
Sec motion dec
+012
Notes
N (See Notes)
rPM=1.194
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
20
Precise sep
175.3
Name
Del1 Lyr
Constellation
Lyra
SAO
67537
HIP
92728
Tycho2
2650-02146-1
HD
175426
HR
7131
GC
25934
BD
BD+36 3307
Bayer
Delta 1 Lyrae
Bayer name
Del1 Lyr
Flamsteed
11 Lyrae
Flamsteed name
11 Lyr
Distance
303.95
Distance ly
991.48
last precise pa
20
last precise sep
175.3
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18537+3658 H 6 3 2002 11 20 175.8 5.55 9.93 B2.5V N D 185343.56+365818.2
18537+3658 H 6 3 2009 12 20 175.2 5.55 9.93 B2.5V N D 185343.56+365818.2
18537+3658 H 6 3 2012 14 20 175.8 5.55 9.93 B2.5V N D 185343.56+365818.2

If you need more information about this double, apply for a data request form to the WDS.