02157+2426 HDO  57

 
 
02h 16m 07.41s +24 25' 15.9" P.A. 95 sep 7.6 mag 11.80,12.00
 
 
Coord 2000
02157+2426
Discov num
HDO  57
Comp
Coord arcsec 2000
02 16 07.41 +24 25 15.9
Date first
1891
Date last
2013
Obs
18
Pa first
96
Pa last
95
P.A. Now (θ)
95°
Sep first
7.4
Sep last
7.6
Sep. Now (ρ)
7.6"
Mag pri
11.80
Mag sec
12.00
delta mag (ΔM)
0.2
Spectral class
Pri motion ra
-048
Sec motion ra
Pri motion dec
-018
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
95.4
Precise sep
7.6
Constellation
Aries
Tycho2
1769-00896-1
last precise pa
95.4
last precise sep
7.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02157+2426 HDO 57 1998 14 95 7.8 11.80 12.00 D 021607.41+242515.9
02157+2426 HDO 57 2007 15 94 7.8 11.80 12.00 D 021607.41+242515.9
02157+2426 HDO 57 2013 17 95 7.6 11.80 12.00 021607.41+242515.9

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