15500-0145 BAL 561

 
 
15h 49m 54.50s -01 44' 43.8" P.A. 354 sep 6.8 mag 10.23,11.80
 
 
Coord 2000
15500-0145
Discov num
BAL 561
Comp
Coord arcsec 2000
15 49 54.50 -01 44 43.8
Date first
1894
Date last
2012
Obs
7
Pa first
355
Pa last
354
P.A. Now (θ)
354°
Sep first
6.9
Sep last
6.8
Sep. Now (ρ)
6.8"
Mag pri
10.23
Mag sec
11.80
delta mag (ΔM)
1.57
Spectral class
Pri motion ra
-096
Sec motion ra
-121
Pri motion dec
+056
Sec motion dec
+311
Notes
rPM=0.768
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
354
Precise sep
6.81
Constellation
Serpens
Tycho2
5018-00303-1
last precise pa
354
last precise sep
6.81
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15500-0145 BAL 561 1999 4 354 6.9 10.23 11.80 D 154954.50-014443.8
15500-0145 BAL 561 2000 5 354 6.8 10.23 11.80 D 154954.50-014443.8
15500-0145 BAL 561 2012 6 354 6.8 10.23 11.80 D 154954.50-014443.8

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