18457+3942 BU   51AB

 
 
18h 45m 39.77s +39 41' 59.6" P.A. 185 sep 73.9 mag 9.00,11.95 Sp M0
 
 
Coord 2000
18457+3942
Discov num
BU   51
Comp
AB
Coord arcsec 2000
18 45 39.77 +39 41 59.6
Date first
1870
Date last
2013
Obs
14
Pa first
190
Pa last
185
P.A. Now (θ)
185°
Sep first
90.0
Sep last
73.9
Sep. Now (ρ)
73.9"
Mag pri
9.00
Mag sec
11.95
delta mag (ΔM)
2.95
Spectral class
M0 (red)
Pri motion ra
-001
Sec motion ra
-003
Pri motion dec
-001
Sec motion dec
+004
Notes
rPM=1.077
This double is not physical.
 
 
18457+3942 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18457+3942 BU 51 AB 1870 2013 14 185 73.9 9.00 11.95 2.95 <===
Show 18457+3942 FYM 51 AD 2013 2013 1 344 34.4 9.00 15.70 6.70
Show 18457+3942 BU 51 BC 1870 2013 11 295 6.1 11.95 12.90 0.95
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
184.8
Precise sep
73.94
Cdsa2 id
BU 51 AB
Constellation
Lyra
Tycho2
3122-01170-1
Ra deg
18.76104722222222
De deg
39.699888888888886
last precise pa
184.8
last precise sep
73.94
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18457+3942 BU 51 AB 2002 12 185 74.1 9.00 11.95 M0 D 184539.77+394159.6
18457+3942 BU 51 AB 2013 14 185 73.9 9.00 11.95 M0 184539.77+394159.6

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