15558+2912 DOO  61

 
 
15h 55m 48.61s +29 11' 38.9" P.A. 250 sep 50 mag 10.90,11.43 Sp K4:+K4/5 dist. 69.93 pc (228.11 l.y.)
 
 
Coord 2000
15558+2912
Discov num
DOO  61
Comp
Coord arcsec 2000
15 55 48.61 +29 11 38.9
Date first
1896
Date last
2013
Obs
11
Pa first
251
Pa last
250
P.A. Now (θ)
250°
Sep first
49.7
Sep last
50.0
Sep. Now (ρ)
50"
Mag pri
10.90
Mag sec
11.43
delta mag (ΔM)
0.53
Spectral class
K4:+K4/5 (yellow-orange/yellow-orange)
Pri motion ra
+011
Sec motion ra
+011
Pri motion dec
-037
Sec motion dec
-038
Notes
rPM=0.025 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
250.3
Precise sep
50.01
Constellation
Corona Borealis
HIP
78015
Tycho2
2040-00526-1
BD
BD+29 2740
Distance
69.93
Distance ly
228.11
last precise pa
250.4
last precise sep
50.068
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15558+2912 DOO 61 1999 7 251 50.2 10.90 11.59 K4:+K4/5 D 155548.61+291138.9
15558+2912 DOO 61 2002 9 251 50.1 10.90 11.59 K4: K4/5 D 155548.61+291138.9
15558+2912 DOO 61 2013 10 250 50.0 10.90 11.43 K4: K4/5 155548.61+291138.9

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