17191-4638 BSO 13 AB (HD 156274)
17h 19m 03.85s -46° 38' 10.1" P.A. 259.00 sep 10.6 mag 5.61,8.88 Sp G8V+M0V dist. 8.8 pc (28.71 l.y.)
| Coord 2000 |
17191-4638 |
|
Discov num |
BSO 13 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 19 03.85 -46 38 10.1 |
|
| Date first |
1880 |
|
Date last |
2019 |
|
Obs |
139 |
|
| Pa first |
0 |
|
Pa last |
258.7 |
|
P.A. Now (θ) |
258.7° |
|
| Sep first |
3.7 |
|
Sep last |
10.64 |
|
Sep. Now (ρ) |
10.64" |
|
| Mag pri |
5.61 |
|
Mag sec |
8.88 |
|
delta mag (ΔM) |
3.27 |
|
Spectral class |
G8V+M0V (yellow/red) |
|
| Pri motion ra |
+105 |
|
Sec motion ra |
+097 |
|
| Pri motion dec |
+014 |
|
Sec motion dec |
+014 |
|
| Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
|
rPM=0.076 (< 0.3, Physical double)
This double is physical.
17191-4638 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 156274 |
227816 |
17 19 04 -46 38 10 |
BSO 13 AB |
2019 |
139 |
259 |
10.6 |
5.61 |
8.88 |
3.27 |
Y |
<=== |
| Show |
|
227816 |
17 19 04 -46 38 10 |
BSO 13 AC |
1999 |
4 |
267 |
144.6 |
5.61 |
13.43 |
7.82 |
|
|
| Show |
|
227816 |
17 19 04 -46 38 10 |
BSO 13 AD |
1999 |
3 |
290 |
94.7 |
5.61 |
14.43 |
8.82 |
|
|
| Show |
|
|
17 19 03 -46 38 13 |
BSO 13 Ba,Bb |
2021 |
10 |
235 |
0.1 |
9.00 |
11.00 |
2.00 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 156274 |
|
Constellation |
Ara |
|
SAO |
227816 |
|
HIP |
84720 |
|
| Tycho2 |
8341-04366-1 |
|
HD |
156274 |
|
HR |
6416 |
|
GC |
23353 |
|
| GL |
Gl 666A |
|
CD |
CD-4611370 |
|
CP |
CP-46 8513 |
|
Distance |
8.8 |
|
| Distance ly |
28.71 |
|
ORBITAL ELEMENTS
| Period (P) | 846.560124y | |
Periastron (T) | 1907.619874y | |
Semi-major axis (a) | 11.93627a | |
| Eccentricity (e) | 0.80872 | |
Inclination (i) | 37.1739° | |
Longitude of periastron (ω) | 332.2559° | |
| Node (Ω) | 134.5845° | |
Notes | n | |
Reference | Kpp2020f | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
253.2 |
9.302 |
| 2001 |
253.5 |
9.374 |
| 2002 |
253.8 |
9.446 |
| 2003 |
254.1 |
9.518 |
| 2004 |
254.5 |
9.589 |
| 2005 |
254.8 |
9.660 |
| 2006 |
255.1 |
9.731 |
| 2007 |
255.4 |
9.801 |
| 2008 |
255.7 |
9.871 |
| 2009 |
255.9 |
9.941 |
| 2010 |
256.2 |
10.010 |
| 2011 |
256.5 |
10.079 |
| 2012 |
256.8 |
10.148 |
| 2013 |
257.1 |
10.217 |
| 2014 |
257.3 |
10.285 |
| 2015 |
257.6 |
10.353 |
| 2016 |
257.9 |
10.420 |
| 2017 |
258.1 |
10.488 |
| 2018 |
258.4 |
10.555 |
| 2019 |
258.6 |
10.621 |
| 2020 |
258.9 |
10.688 |
| 2021 |
259.1 |
10.754 |
| 2022 |
259.4 |
10.819 |
| 2023 |
259.6 |
10.885 |
| 2024 |
259.9 |
10.950 |
| 2025 |
260.1 |
11.015 |
| 2026 |
260.3 |
11.080 |
| 2027 |
260.5 |
11.144 |
| 2028 |
260.8 |
11.208 |
| 2029 |
261.0 |
11.272 |
| 2030 |
261.2 |
11.335 |
|
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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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