17104-1544 BU 1118 AB,C (Eta Oph)
17h 10m 22.66s -15° 43' 30.5" P.A. 148.00 sep 99.8 mag 2.42,12.34 Sp A1IV+A1IV dist. 27.09 pc (88.37 l.y.)
| Coord 2000 |
17104-1544 |
|
Discov num |
BU 1118 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
17 10 22.66 -15 43 30.5 |
|
| Date first |
1890 |
|
Date last |
2012 |
|
Obs |
6 |
|
| Pa first |
142 |
|
Pa last |
148 |
|
P.A. Now (θ) |
148° |
|
| Sep first |
94.6 |
|
Sep last |
99.75 |
|
Sep. Now (ρ) |
99.75" |
|
| Mag pri |
2.42 |
|
Mag sec |
12.34 |
|
delta mag (ΔM) |
9.92 |
|
Spectral class |
A1IV+A1IV (white/white) |
|
| Pri motion ra |
+041 |
|
Sec motion ra |
+002 |
|
| Pri motion dec |
+098 |
|
Sec motion dec |
-009 |
|
| Notes |
N
(See Notes) |
|
rPM=1.072
This double is not physical.
17104-1544 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Sabik |
160332 |
17 10 23 -15 43 30 |
BU 1118 AB |
2023 |
252 |
222 |
0.3 |
3.05 |
3.27 |
0.22 |
Y |
|
| Show |
Eta Oph |
160332 |
17 10 23 -15 43 30 |
BU 1118 AB,C |
2012 |
6 |
148 |
99.8 |
2.42 |
12.34 |
9.92 |
|
<=== |
| Show |
Sabik |
160332 |
17 10 23 -15 43 30 |
BU 1118 AD |
2012 |
8 |
281 |
101.2 |
2.42 |
11.20 |
8.78 |
|
|
| Show |
Sabik |
160332 |
17 10 23 -15 43 30 |
DAL 52 AE |
2012 |
2 |
317 |
62.7 |
2.42 |
11.10 |
8.68 |
|
|
0 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Eta Oph |
|
Constellation |
Ophiuchus |
|
SAO |
160332 |
|
HIP |
84012 |
|
| Tycho2 |
6812-00306-1 |
|
HD |
155125 |
|
HR |
6378 |
|
GC |
23158 |
|
| ADS |
10374 |
|
BD |
BD-15 4467 |
|
Bayer |
Eta Ophiuchi |
|
Bayer name |
Eta Oph |
|
| Distance |
27.09 |
|
Distance ly |
88.37 |
|
Bayer greek |
η Oph |
|
