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 |
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Discov num |
HDS2309 |
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Comp |
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Coord arcsec 2000 |
16 20 35.00 +45 34 44.6 |
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Date first |
1991 |
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Date last |
2010 |
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Obs |
10 |
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Pa first |
259 |
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Pa last |
340 |
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P.A. Now (θ) |
340° |
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Sep first |
0.2 |
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Sep last |
0.137 |
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Sep. Now (ρ) |
0.137" |
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Mag pri |
7.74 |
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Mag sec |
10.68 |
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delta mag (ΔM) |
2.94 |
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Spectral class |
K0 (yellow-orange) |
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Pri motion ra |
-021 |
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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 |
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Constellation |
Hercules |
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SAO |
46037 |
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HIP |
80074 |
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Tycho2 |
3492-01816-1 |
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Gaia DR2 |
1385880809916192512 |
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HD |
147544 |
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GC |
22002 |
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BD |
BD+45 2394 |
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Distance |
85.03 |
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Distance ly |
277.37 |
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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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