17153-2636 SHJ 243 AB (Guniibuu)
17h 15m 20.78s -26° 36' 06.1" P.A. 138.00 sep 5.1 mag 5.12,5.12 Sp K5Ve+K1V dist. 5.93 pc (19.34 l.y.)
| Coord 2000 |
17153-2636 |
|
Discov num |
SHJ 243 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 15 20.78 -26 36 06.1 |
|
| Date first |
1777 |
|
Date last |
2021 |
|
Obs |
283 |
|
| Pa first |
0 |
|
Pa last |
137.9 |
|
P.A. Now (θ) |
137.9° |
|
| Sep first |
13.0 |
|
Sep last |
5.085 |
|
Sep. Now (ρ) |
5.085" |
|
| Mag pri |
5.12 |
|
Mag sec |
5.12 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
K5Ve+K1V (yellow-orange/yellow-orange) |
|
| Pri motion ra |
-051 |
|
Sec motion ra |
-047 |
|
| Pri motion dec |
-115 |
|
Sec motion dec |
-114 |
|
| Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
|
rPM=0.033 (< 0.3, Physical double)
This double is physical.
17153-2636 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Guniibuu |
185198 |
17 15 21 -26 36 06 |
SHJ 243 AB |
2021 |
283 |
138 |
5.1 |
5.12 |
5.12 |
0.00 |
Y |
<=== |
| Show |
|
185198 |
17 15 21 -26 36 06 |
SHJ 243 AC |
2021 |
8 |
74 |
732.5 |
5.12 |
6.46 |
1.34 |
|
|
| Show |
|
185198 |
17 15 21 -26 36 06 |
SHJ 243 AD |
2021 |
13 |
342 |
295.5 |
5.12 |
7.80 |
2.68 |
|
|
| Show |
|
185198 |
17 15 21 -26 36 06 |
SHJ 243 AE |
2000 |
5 |
313 |
38.2 |
5.12 |
12.30 |
7.18 |
|
|
| Show |
|
185195 |
17 15 21 -26 36 10 |
SHJ 243 BD |
1991 |
6 |
337 |
272.3 |
5.12 |
7.80 |
2.68 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Guniibuu |
|
Var name |
A Oph |
|
Constellation |
Ophiuchus |
|
SAO |
185198 |
|
| HIP |
84405 |
|
Tycho2 |
6820-00326-2 |
|
HD |
155886 |
|
HR |
6402 |
|
| GC |
23274 |
|
ADS |
10417 |
|
GL |
Gl 663A |
|
CD |
CD-2612026 |
|
| CP |
CP-26 5858 |
|
Flamsteed |
36 Ophiuchi |
|
Flamsteed name |
36 Oph |
|
Distance |
5.93 |
|
| Distance ly |
19.34 |
|
ORBITAL ELEMENTS
| Period (P) | 470.9y | |
Periastron (T) | 1677.86y | |
Semi-major axis (a) | 13a | |
| Eccentricity (e) | 0.916 | |
Inclination (i) | 99.794° | |
Longitude of periastron (ω) | 89.8° | |
| Node (Ω) | 94.155° | |
Notes | n | |
Reference | Irw1996 | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
146.4 |
4.837 |
| 2001 |
146.0 |
4.850 |
| 2002 |
145.6 |
4.862 |
| 2003 |
145.3 |
4.874 |
| 2004 |
144.9 |
4.886 |
| 2005 |
144.5 |
4.899 |
| 2006 |
144.2 |
4.911 |
| 2007 |
143.8 |
4.924 |
| 2008 |
143.4 |
4.936 |
| 2009 |
143.1 |
4.949 |
| 2010 |
142.7 |
4.961 |
| 2011 |
142.4 |
4.974 |
| 2012 |
142.0 |
4.986 |
| 2013 |
141.6 |
4.999 |
| 2014 |
141.3 |
5.011 |
| 2015 |
140.9 |
5.024 |
| 2016 |
140.6 |
5.036 |
| 2017 |
140.2 |
5.049 |
| 2018 |
139.9 |
5.061 |
| 2019 |
139.6 |
5.074 |
| 2020 |
139.2 |
5.086 |
| 2021 |
138.9 |
5.099 |
| 2022 |
138.5 |
5.111 |
| 2023 |
138.2 |
5.124 |
| 2024 |
137.9 |
5.136 |
| 2025 |
137.5 |
5.148 |
| 2026 |
137.2 |
5.161 |
| 2027 |
136.9 |
5.173 |
| 2028 |
136.5 |
5.185 |
| 2029 |
136.2 |
5.197 |
| 2030 |
135.9 |
5.209 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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