21161+1606 BU 1261

 
 
21h 16m 07.68s +16 06' 12.4" P.A. 151 sep 1.8 mag 9.00,10.20 Sp A2
 
 
Coord 2000
21161+1606
Discov num
BU 1261
Comp
Coord arcsec 2000
21 16 07.68 +16 06 12.4
Date first
1886
Date last
2016
Obs
28
Pa first
152
Pa last
151
P.A. Now (θ)
151°
Sep first
1.4
Sep last
1.8
Sep. Now (ρ)
1.8"
Mag pri
9.00
Mag sec
10.20
delta mag (ΔM)
1.2
Spectral class
A2 (white)
Pri motion ra
+017
Sec motion ra
Pri motion dec
+011
Sec motion dec
Notes
rPM=0.925
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
SAO
160373
Tycho2
6237-00599-1
last precise pa
150.5
last precise sep
1.791
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21161+1606 BU 1261 1999 27 148 1.7 9.00 10.20 A2 211607.68+160612.4
21161+1606 BU 1261 2016 28 151 1.8 9.00 10.20 A2 211607.68+160612.4

If you need more information about this double, apply for a data request form to the WDS.