18515+1019 BU 1464CD

 
 
18h 51m 31.79s +10 18' 49.8" P.A. 23 sep 22 mag 9.21,9.68
 
 
Coord 2000
18515+1019
Discov num
BU 1464
Comp
CD
Coord arcsec 2000
18 51 31.79 +10 18 49.8
Date first
1879
Date last
2015
Obs
17
Pa first
22
Pa last
23
P.A. Now (θ)
23°
Sep first
21.8
Sep last
22.0
Sep. Now (ρ)
22"
Mag pri
9.21
Mag sec
9.68
delta mag (ΔM)
0.47
Spectral class
Pri motion ra
+003
Sec motion ra
+002
Pri motion dec
-004
Sec motion dec
-001
Notes
rPM=0.632
Nature of this double is uncertain.
 
 
18515+1019 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18515+1019 HJ 870 AB 1827 2015 13 219 11.6 9.75 12.00 2.25
Show 18515+1019 HJ 870 AC 1909 2015 11 248 65.8 9.75 9.21 0.54
Show 18515+1019 BU 1464 CD 1879 2015 17 23 22.0 9.21 9.68 0.47 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
23.2
Precise sep
21.99
Constellation
Aquila
Tycho2
1030-03993-1
HD
174715
last precise pa
23.2
last precise sep
21.99
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18515+1019 BU 1464 CD 2004 15 24 21.7 9.21 9.68 D 185131.79+101849.8
18515+1019 BU 1464 CD 2015 17 23 22.0 9.21 9.68 185131.79+101849.8

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