18081+0213 BU  636AB

 
 
18h 08m 07.24s +02 13' 07.2" P.A. 126 sep 1.9 mag 6.64,11.80 Sp A4V dist. 134.77 pc (439.62 l.y.)
 
 
Coord 2000
18081+0213
Discov num
BU  636
Comp
AB
Coord arcsec 2000
18 08 07.24 +02 13 07.2
Date first
1878
Date last
1975
Obs
11
Pa first
127
Pa last
126
P.A. Now (θ)
126°
Sep first
4.9
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
6.64
Mag sec
11.80
delta mag (ΔM)
5.16
Spectral class
A4V (white)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-008
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18081+0213 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18081+0213 BU 636 AB 1878 1975 11 126 1.9 6.64 11.80 5.16 <===
Show 18081+0213 BU 636 AC 1898 2002 5 92 12.5 6.64 13.60 6.96
Show 18081+0213 BU 636 AD 1923 2002 5 348 40.8 6.64 11.12 4.48
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
126.3
Precise sep
1.86
Constellation
Ophiuchus
HIP
88841
Tycho2
0435-04738-1
HD
165887
BD
BD+02 3498
Distance
134.77
Distance ly
439.62
last precise pa
126.3
last precise sep
1.86
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18081+0213 BU 636 AB 1975 11 126 1.9 6.64 11.80 A4V 180807.24+021307.2

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