18007+5453 ES  640

 
 
18h 00m 42.85s +54 52' 38.1" P.A. 78 sep 8.4 mag 9.51,10.10 Sp F2
 
 
Coord 2000
18007+5453
Discov num
ES  640
Comp
Coord arcsec 2000
18 00 42.85 +54 52 38.1
Date first
1902
Date last
2017
Obs
13
Pa first
76
Pa last
78
P.A. Now (θ)
78°
Sep first
8.2
Sep last
8.4
Sep. Now (ρ)
8.4"
Mag pri
9.51
Mag sec
10.10
delta mag (ΔM)
0.59
Spectral class
F2 (yellow-white)
Pri motion ra
+001
Sec motion ra
+004
Pri motion dec
+011
Sec motion dec
+013
Notes
rPM=0.265 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
77.7
Precise sep
8.42
Constellation
Draco
SAO
30694
Tycho2
3907-01537-1
HD
234538
last precise pa
77.7
last precise sep
8.42
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18007+5453 ES 640 2000 8 78 8.3 9.51 10.10 F2 D 180042.85+545238.1
18007+5453 ES 640 2011 9 77 8.4 9.51 10.10 F2 D 180042.85+545238.1
18007+5453 ES 640 2017 13 78 8.4 9.51 10.10 F2 180042.85+545238.1

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