17104-1544 BU 1118AD

 
 
17h 10m 22.66s -15 43' 30.5" P.A. 281 sep 101.2 mag 2.42,11.20 Sp A1IV dist. 27.09 pc (88.37 l.y.)
 
 
Coord 2000
17104-1544
Discov num
BU 1118
Comp
AD
Coord arcsec 2000
17 10 22.66 -15 43 30.5
Date first
1898
Date last
2012
Obs
8
Pa first
289
Pa last
281
P.A. Now (θ)
281°
Sep first
99.8
Sep last
101.2
Sep. Now (ρ)
101.2"
Mag pri
2.42
Mag sec
11.20
delta mag (ΔM)
8.78
Spectral class
A1IV (white)
Pri motion ra
+041
Sec motion ra
-016
Pri motion dec
+098
Sec motion dec
-004
Notes
N (See Notes)
rPM=1.1
This double is not physical.
 
 
17104-1544 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Eta Oph 160332 17104-1544 BU 1118 AB 1889 2016 225 230 0.6 3.05 3.27 0.22 Y
Show 160332 17104-1544 BU 1118 AB,C 1890 2012 6 148 99.8 2.42 12.34 9.92
Show 160332 17104-1544 BU 1118 AD 1898 2012 8 281 101.2 2.42 11.20 8.78 <===
Show 160332 17104-1544 DAL 52 AE 1998 2012 2 317 62.7 2.42 11.10 8.68
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
281
Precise sep
101.21
Constellation
Ophiuchus
SAO
160332
HIP
84012
HD
155125
HR
6378
GC
23158
GL
Gl 656.1A
BD
BD-15 4467
Bayer
Eta Ophiuchi
Bayer name
Eta Oph
Flamsteed
35 Ophiuchi
Flamsteed name
35 Oph
Distance
27.09
Distance ly
88.37
last precise pa
281
last precise sep
101.21
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17104-1544 BU 1118 AD 1998 6 282 101.2 3.05 11.20 A1IV N D 171022.66-154330.5
17104-1544 BU 1118 AD 2000 7 281 100.7 3.05 11.20 A1IV N D 171022.66-154330.5
17104-1544 BU 1118 AD 2012 8 281 101.2 2.42 11.20 A1IV N 171022.66-154330.5

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