02171+5645 ES 1874

 
 
02h 17m 04.31s +56 45' 11.2" P.A. 146 sep 3.2 mag 11.30,14.00 Sp B2IIIe
 
 
Coord 2000
02171+5645
Discov num
ES 1874
Comp
Coord arcsec 2000
02 17 04.31 +56 45 11.2
Date first
1921
Date last
2015
Obs
3
Pa first
144
Pa last
146
P.A. Now (θ)
146°
Sep first
3.5
Sep last
3.2
Sep. Now (ρ)
3.2"
Mag pri
11.30
Mag sec
14.00
delta mag (ΔM)
2.7
Spectral class
B2IIIe (blue-white)
Pri motion ra
-006
Sec motion ra
Pri motion dec
+011
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
146.1
Precise sep
3.17
Constellation
Perseus
last precise pa
146.1
last precise sep
3.17
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02171+5645 ES 1874 1933 2 147 2.8 8.48 11.20 021708.22+564611.0
02171+5645 ES 1874 2015 3 146 3.2 11.30 14.00 B2IIIe 021704.31+564511.2

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