12307+7518 DOO  55

 
 
12h 30m 31.92s +75 19' 09.6" P.A. 56 sep 4.5 mag 10.80,11.90 Sp F8
 
 
Coord 2000
12307+7518
Discov num
DOO  55
Comp
Coord arcsec 2000
12 30 31.92 +75 19 09.6
Date first
1897
Date last
2017
Obs
11
Pa first
54
Pa last
56
P.A. Now (θ)
56°
Sep first
4.6
Sep last
4.5
Sep. Now (ρ)
4.5"
Mag pri
10.80
Mag sec
11.90
delta mag (ΔM)
1.1
Spectral class
F8 (yellow-white)
Pri motion ra
-002
Sec motion ra
+017
Pri motion dec
-011
Sec motion dec
-003
Notes
rPM=1.194
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
56
Precise sep
4.476
Constellation
Draco
Tycho2
4551-00818-1
HD
109027
last precise pa
56
last precise sep
4.476
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12307+7518 DOO 55 2003 8 55 4.4 10.80 11.90 F8 D 123031.92+751909.6
12307+7518 DOO 55 2004 9 55 4.4 10.80 11.90 F8 D 123031.92+751909.6
12307+7518 DOO 55 2016 10 54 4.3 10.80 11.90 F8 123031.92+751909.6
12307+7518 DOO 55 2017 11 56 4.5 10.80 11.90 F8 123031.92+751909.6

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