21172-0414 BU  161DE

 
 
21h 17m 09.13s -04 13' 59.1" P.A. 9 sep 10.7 mag 13.70,13.70
 
 
Coord 2000
21172-0414
Discov num
BU  161
Comp
DE
Coord arcsec 2000
21 17 09.13 -04 13 59.1
Date first
1891
Date last
2000
Obs
4
Pa first
16
Pa last
9
P.A. Now (θ)
Sep first
11.7
Sep last
10.7
Sep. Now (ρ)
10.7"
Mag pri
13.70
Mag sec
13.70
delta mag (ΔM)
0
Spectral class
Pri motion ra
-091
Sec motion ra
-019
Pri motion dec
-051
Sec motion dec
+028
Notes
N (See Notes)
rPM=1.025
This double is not physical.
 
 
21172-0414 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21172-0414 BU 161 AB 1873 2003 14 351 100.7 8.18 10.29 2.11
Show 21172-0414 BU 161 AD 1891 2002 5 317 32.2 8.18 13.60 5.42
Show 21172-0414 BU 161 AE 1899 2002 4 329 39.6 8.18 13.10 4.92
Show 21172-0414 BU 161 BC 1873 2015 10 315 8.2 10.29 11.60 1.31
Show 21172-0414 BU 161 DE 1891 2000 4 9 10.7 13.70 13.70 0.00 <===
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
9.1
Precise sep
10.681
Cdsa2 id
BU 161 DE
Constellation
Aquarius
Ra deg
21.285869444444447
De deg
-4.233083333333333
last precise pa
9.1
last precise sep
10.681
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21172-0414 BU 161 DE 2000 4 9 10.7 13.70 13.70 N 211709.13-041359.1
21172-0414 BU 161 DE 2010 5 8 10.6 13.70 13.70 N 211709.13-041359.1

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