18073+0934 STT 342Aa,Ab

 
 
18h 07m 21.02s +09 33' 49.2" P.A. 156 sep 1.6 mag 3.74,7.50 Sp A4III dist. 26.63 pc (86.87 l.y.)
 
 
Coord 2000
18073+0934
Discov num
STT 342
Comp
Aa,Ab
Coord arcsec 2000
18 07 21.02 +09 33 49.2
Date first
1842
Date last
1876
Obs
8
Pa first
157
Pa last
156
P.A. Now (θ)
156°
Sep first
1.3
Sep last
1.6
Sep. Now (ρ)
1.6"
Mag pri
3.74
Mag sec
7.50
delta mag (ΔM)
3.76
Spectral class
A4III (white)
Pri motion ra
-062
Sec motion ra
Pri motion dec
+080
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18073+0934 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 123142 18073+0934 STT 342 Aa,Ab 1842 1876 8 156 1.6 3.74 7.50 3.76 <===
Show 72 Oph 123142 18073+0934 STT 342 AB 1890 2015 9 298 25.1 3.74 13.90 10.16
Show 123142 18073+0934 STT 342 AC 1827 2015 11 163 64.3 3.74 11.45 7.71
Show 123142 18073+0934 DAL 36 AD 2007 2010 2 48 24.2 3.74 14.80 11.06
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
156
Precise sep
1.6
Constellation
Ophiuchus
SAO
123142
HIP
88771
HD
165777
HR
6771
GC
24695
GL
Wo 9615A
BD
BD+09 3564
Flamsteed
72 Ophiuchi
Flamsteed name
72 Oph
Distance
26.63
Distance ly
86.87
last precise pa
156
last precise sep
1.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18073+0934 STT 342 Aa,Ab 1876 8 156 1.6 3.74 7.50 A4III N 180721.02+093349.2

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