21089+0013 BU  837

 
 
21h 08m 52.87s +00 12' 53.5" P.A. 181 sep 3.5 mag 9.03,10.97 Sp G5
 
 
Coord 2000
21089+0013
Discov num
BU  837
Comp
Coord arcsec 2000
21 08 52.87 +00 12 53.5
Date first
1881
Date last
2014
Obs
18
Pa first
190
Pa last
181
P.A. Now (θ)
181°
Sep first
3.7
Sep last
3.5
Sep. Now (ρ)
3.5"
Mag pri
9.03
Mag sec
10.97
delta mag (ΔM)
1.94
Spectral class
G5 (yellow)
Pri motion ra
+107
Sec motion ra
+108
Pri motion dec
-038
Sec motion dec
-051
Notes
rPM=0.109 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
181.4
Precise sep
3.51
Cdsa2 id
BU 837
Constellation
Aquarius
Tycho2
0527-01360-1
Ra deg
21.148019444444444
De deg
0.2148611111111111
last precise pa
181.4
last precise sep
3.51
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21089+0013 BU 837 2001 16 184 3.2 9.03 10.97 G5 D 210852.87+001253.5
21089+0013 BU 837 2014 18 181 3.5 9.03 10.97 G5 210852.87+001253.5

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