17465+2743 TRN 2 Aa,Ab
17h 46m 27.51s +27° 43' 14.3" P.A. 255.00 sep 1.8 mag 3.49,12.70 Sp G5IV+M4V dist. 8.31 pc (27.11 l.y.)
| Coord 2000 |
17465+2743 |
|
Discov num |
TRN 2 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
17 46 27.51 +27 43 14.3 |
|
| Date first |
1998 |
|
Date last |
2015 |
|
Obs |
24 |
|
| Pa first |
167 |
|
Pa last |
254.8 |
|
P.A. Now (θ) |
254.8° |
|
| Sep first |
1.4 |
|
Sep last |
1.78 |
|
Sep. Now (ρ) |
1.78" |
|
| Mag pri |
3.49 |
|
Mag sec |
12.70 |
|
delta mag (ΔM) |
9.21 |
|
Spectral class |
G5IV+M4V (yellow/red) |
|
| Pri motion ra |
-292 |
|
Sec motion ra |
|
|
| Pri motion dec |
-750 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
17465+2743 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
85397 |
17 46 28 +27 43 14 |
TRN 2 Aa,Ab |
2015 |
24 |
255 |
1.8 |
3.49 |
12.70 |
9.21 |
Y |
<=== |
| Show |
Mu Her |
85397 |
17 46 28 +27 43 14 |
STF 2220 A,BC |
2016 |
121 |
249 |
35.4 |
3.49 |
9.78 |
6.29 |
|
|
| Show |
|
85397 |
17 46 28 +27 43 14 |
ABT 14 AD |
2002 |
3 |
5 |
321.1 |
3.49 |
12.33 |
8.84 |
|
|
| Show |
|
|
17 46 25 +27 43 01 |
AC 7 BC |
2021 |
371 |
27 |
1.0 |
10.20 |
10.70 |
0.50 |
Y |
|
| Show |
|
|
17 46 25 +27 43 01 |
ABT 14 BC,D |
2000 |
2 |
10 |
335.0 |
9.78 |
12.33 |
2.55 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
SAO |
85397 |
|
HIP |
86974 |
|
Tycho2 |
2085-03062-1 |
|
| HD |
161797 |
|
HR |
6623 |
|
GC |
24138 |
|
ADS |
10786 |
|
| GL |
Gl 695A |
|
BD |
BD+27 2888 |
|
Bayer |
Mu Herculis |
|
Bayer name |
Mu Her |
|
| Flamsteed |
86 Herculis |
|
Flamsteed name |
86 Her |
|
FK5 |
667 |
|
Distance |
8.31 |
|
| Distance ly |
27.11 |
|
Bayer greek |
μ Her |
|
ORBITAL ELEMENTS
| Period (P) | 98.9y | ± 22.7 |
Periastron (T) | 1921.1y | ± 23.8 |
Semi-major axis (a) | 2.9a | ± 0.3 |
| Eccentricity (e) | 0.44 | ± 0.06 |
Inclination (i) | 62.82° | ± 4.66 |
Longitude of periastron (ω) | 214° | ± 16 |
| Node (Ω) | 80.4° | ± 1.7 |
Notes | n | |
Reference | Rbr2016a | |
| Equinox | 2000 | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
172.8 |
1.405 |
| 2001 |
179.3 |
1.382 |
| 2002 |
185.9 |
1.372 |
| 2003 |
192.6 |
1.375 |
| 2004 |
199.2 |
1.391 |
| 2005 |
205.6 |
1.418 |
| 2006 |
211.7 |
1.454 |
| 2007 |
217.4 |
1.498 |
| 2008 |
222.9 |
1.546 |
| 2009 |
228.0 |
1.596 |
| 2010 |
232.7 |
1.646 |
| 2011 |
237.2 |
1.691 |
| 2012 |
241.5 |
1.729 |
| 2013 |
245.7 |
1.756 |
| 2014 |
249.7 |
1.769 |
| 2015 |
253.7 |
1.765 |
| 2016 |
257.8 |
1.740 |
| 2017 |
262.1 |
1.692 |
| 2018 |
266.6 |
1.621 |
| 2019 |
271.7 |
1.525 |
| 2020 |
277.5 |
1.409 |
| 2021 |
284.5 |
1.278 |
| 2022 |
293.1 |
1.141 |
| 2023 |
304.0 |
1.012 |
| 2024 |
317.7 |
0.910 |
| 2025 |
334.1 |
0.854 |
| 2026 |
351.4 |
0.859 |
| 2027 |
7.3 |
0.927 |
| 2028 |
20.4 |
1.042 |
| 2029 |
30.6 |
1.188 |
| 2030 |
38.4 |
1.351 |
|
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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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