18109+5139 ES  642

 
 
18h 10m 51.66s +51 39' 45.4" P.A. 273 sep 7.1 mag 10.60,14.60 Sp K0
 
 
Coord 2000
18109+5139
Discov num
ES  642
Comp
Coord arcsec 2000
18 10 51.66 +51 39 45.4
Date first
1908
Date last
2003
Obs
3
Pa first
274
Pa last
273
P.A. Now (θ)
273°
Sep first
6.8
Sep last
7.1
Sep. Now (ρ)
7.1"
Mag pri
10.60
Mag sec
14.60
delta mag (ΔM)
4
Spectral class
K0 (yellow-orange)
Pri motion ra
+005
Sec motion ra
-032
Pri motion dec
+002
Sec motion dec
+000
Notes
rPM=1.158
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
273.2
Precise sep
7.133
Constellation
Draco
SAO
30789
Tycho2
3536-01759-1
last precise pa
273.2
last precise sep
7.133
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18109+5139 ES 642 1998 2 273 6.9 10.60 14.60 K0 D 181051.66+513945.4
18109+5139 ES 642 2003 3 273 7.1 10.60 14.60 K0 D 181051.66+513945.4

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