16206+4535 HDS 2309 (HD 147544)
16h 20m 35.00s +45° 34' 44.6" P.A. 340.00 sep 0.1 mag 7.74,10.68 Sp K0 dist. 85.03 pc (277.37 l.y.)
| Coord 2000 |
16206+4535 |
|
Discov num |
HDS2309 |
|
Comp |
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Coord arcsec 2000 |
16 20 35.00 +45 34 44.6 |
|
| Date first |
1991 |
|
Date last |
2010 |
|
Obs |
10 |
|
| Pa first |
259 |
|
Pa last |
340 |
|
P.A. Now (θ) |
340° |
|
| Sep first |
0.2 |
|
Sep last |
0.137 |
|
Sep. Now (ρ) |
0.137" |
|
| Mag pri |
7.74 |
|
Mag sec |
10.68 |
|
delta mag (ΔM) |
2.94 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-021 |
|
Sec motion ra |
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|
| Pri motion dec |
+057 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 147544 |
|
Constellation |
Hercules |
|
SAO |
46037 |
|
HIP |
80074 |
|
| Tycho2 |
3492-01816-1 |
|
Gaia DR2 |
1385880809916192512 |
|
HD |
147544 |
|
GC |
22002 |
|
| BD |
BD+45 2394 |
|
Distance |
85.03 |
|
Distance ly |
277.37 |
|
ORBITAL ELEMENTS
| Period (P) | 29.906y | ± 0.932 |
Periastron (T) | 2016.237y | ± 0.635 |
Semi-major axis (a) | 0.1469a | ± 0.0071 |
| Eccentricity (e) | 0.614 | ± 0.099 |
Inclination (i) | 36.8° | ± 5.7 |
Longitude of periastron (ω) | 41° | ± 13.7 |
| Node (Ω) | 77.5° | ± 11.1 |
Notes | | |
Reference | Cve2014 | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
288.0 |
0.221 |
| 2001 |
291.4 |
0.219 |
| 2002 |
294.8 |
0.216 |
| 2003 |
298.4 |
0.211 |
| 2004 |
302.2 |
0.205 |
| 2005 |
306.3 |
0.197 |
| 2006 |
310.7 |
0.189 |
| 2007 |
315.6 |
0.179 |
| 2008 |
321.1 |
0.167 |
| 2009 |
327.4 |
0.155 |
| 2010 |
334.9 |
0.142 |
| 2011 |
343.9 |
0.128 |
| 2012 |
355.3 |
0.113 |
| 2013 |
10.0 |
0.099 |
| 2014 |
29.8 |
0.085 |
| 2015 |
57.2 |
0.071 |
| 2016 |
98.8 |
0.055 |
| 2017 |
162.4 |
0.051 |
| 2018 |
207.8 |
0.074 |
| 2019 |
229.3 |
0.103 |
| 2020 |
241.6 |
0.128 |
| 2021 |
250.1 |
0.150 |
| 2022 |
256.6 |
0.168 |
| 2023 |
261.9 |
0.183 |
| 2024 |
266.5 |
0.195 |
| 2025 |
270.7 |
0.204 |
| 2026 |
274.5 |
0.211 |
| 2027 |
278.1 |
0.216 |
| 2028 |
281.5 |
0.219 |
| 2029 |
284.9 |
0.221 |
| 2030 |
288.3 |
0.220 |
|
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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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