18127+5557 ES  643

 
 
18h 12m 45.93s +55 55' 56.3" P.A. 49 sep 4 mag 10.71,12.90
 
 
Coord 2000
18127+5557
Discov num
ES  643
Comp
Coord arcsec 2000
18 12 45.93 +55 55 56.3
Date first
1908
Date last
2003
Obs
5
Pa first
50
Pa last
49
P.A. Now (θ)
49°
Sep first
3.4
Sep last
4.0
Sep. Now (ρ)
4"
Mag pri
10.71
Mag sec
12.90
delta mag (ΔM)
2.19
Spectral class
Pri motion ra
-047
Sec motion ra
-008
Pri motion dec
+002
Sec motion dec
-022
Notes
rPM=0.973
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
49
Precise sep
3.967
Constellation
Draco
Tycho2
3907-01801-1
last precise pa
49
last precise sep
3.967
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18127+5557 ES 643 1993 3 47 4.1 10.71 12.90 181245.93+555556.3
18127+5557 ES 643 2000 4 50 3.9 10.71 12.90 D 181245.93+555556.3
18127+5557 ES 643 2003 5 49 4.0 10.71 12.90 D 181245.93+555556.3

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