12102+1858 A  2057

 
 
12h 10m 13.32s +18 58' 06.8" P.A. 298 sep 1.9 mag 9.85,15.40 Sp F8
 
 
Coord 2000
12102+1858
Discov num
A  2057
Comp
Coord arcsec 2000
12 10 13.32 +18 58 06.8
Date first
1909
Date last
2015
Obs
4
Pa first
291
Pa last
298
P.A. Now (θ)
298°
Sep first
1.7
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
9.85
Mag sec
15.40
delta mag (ΔM)
5.55
Spectral class
F8 (yellow-white)
Pri motion ra
-011
Sec motion ra
Pri motion dec
+012
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
297.5
Precise sep
1.921
Constellation
Coma Berenices
SAO
99970
Tycho2
1444-02371-1
Gaia DR2
58328608256
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12102+1858 A 2057 1931 3 293 2.0 9.85 15.40 F8 121013.32+185806.8
12102+1858 A 2057 2015 4 298 1.9 9.85 15.40 F8 121013.32+185806.8

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