18121+4015 LEO   1

 
 
18h 12m 07.00s +40 15' 00.6" P.A. 146 sep 1.5 mag 10.35,11.34 Sp F8
 
 
Coord 2000
18121+4015
Discov num
LEO   1
Comp
Coord arcsec 2000
18 12 07.00 +40 15 00.6
Date first
1916
Date last
2015
Obs
10
Pa first
153
Pa last
146
P.A. Now (θ)
146°
Sep first
1.4
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
10.35
Mag sec
11.34
delta mag (ΔM)
0.99
Spectral class
F8 (yellow-white)
Pri motion ra
-013
Sec motion ra
-013
Pri motion dec
-009
Sec motion dec
-009
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
145.8
Precise sep
1.47
Constellation
Hercules
Tycho2
3107-02439-1
last precise pa
145.8
last precise sep
1.47
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18121+4015 LEO 1 2003 8 149 1.4 10.35 11.34 F8 181207.00+401500.6
18121+4015 LEO 1 2010 9 147 1.5 10.35 11.34 F8 181207.00+401500.6
18121+4015 LEO 1 2015 10 146 1.5 10.35 11.34 F8 181207.00+401500.6

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