15197-2416 HJ 4756 (HD 136121)
15h 19m 40.37s -24° 16' 11.9" P.A. 247.00 sep 0.6 mag 7.90,8.27 Sp F4V dist. 69.64 pc (227.17 l.y.)
Coord 2000 |
15197-2416 |
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Discov num |
HJ 4756 |
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Comp |
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Coord arcsec 2000 |
15 19 40.37 -24 16 11.9 |
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Date first |
1835 |
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Date last |
2016 |
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Obs |
39 |
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Pa first |
0 |
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Pa last |
246.7 |
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P.A. Now (θ) |
246.7° |
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Sep first |
0.7 |
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Sep last |
0.58 |
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Sep. Now (ρ) |
0.58" |
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Mag pri |
7.90 |
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Mag sec |
8.27 |
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delta mag (ΔM) |
0.37 |
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Spectral class |
F4V (yellow-white) |
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Pri motion ra |
-046 |
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Sec motion ra |
-046 |
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Pri motion dec |
-023 |
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Sec motion dec |
-023 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 136121 |
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Constellation |
Libra |
|
SAO |
183377 |
|
HIP |
75012 |
|
Tycho2 |
6762-01032-1 |
|
Gaia DR2 |
6227062221054093824 |
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HD |
136121 |
|
GC |
20589 |
|
ADS |
9586 |
|
CD |
CD-2312208 |
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CP |
CP-23 6146 |
|
Distance |
69.64 |
|
Distance ly |
227.17 |
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ORBITAL ELEMENTS
Period (P) | 541.6y | |
Periastron (T) | 1825.04y | |
Semi-major axis (a) | 1.196a | |
Eccentricity (e) | 0.221 | |
Inclination (i) | 117.1° | |
Longitude of periastron (ω) | 127.2° | |
Node (Ω) | 150.9° | |
Notes | | |
Reference | Zir2008 | |
Equinox | 2000 | |
Last observation | 1992 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
255.3 |
0.632 |
2001 |
254.3 |
0.631 |
2002 |
253.2 |
0.630 |
2003 |
252.1 |
0.629 |
2004 |
251.1 |
0.628 |
2005 |
250.0 |
0.627 |
2006 |
248.9 |
0.627 |
2007 |
247.8 |
0.627 |
2008 |
246.8 |
0.627 |
2009 |
245.7 |
0.627 |
2010 |
244.6 |
0.627 |
2011 |
243.5 |
0.627 |
2012 |
242.5 |
0.628 |
2013 |
241.4 |
0.629 |
2014 |
240.3 |
0.629 |
2015 |
239.3 |
0.630 |
2016 |
238.2 |
0.632 |
2017 |
237.1 |
0.633 |
2018 |
236.1 |
0.635 |
2019 |
235.0 |
0.636 |
2020 |
234.0 |
0.638 |
2021 |
233.0 |
0.640 |
2022 |
231.9 |
0.642 |
2023 |
230.9 |
0.644 |
2024 |
229.9 |
0.647 |
2025 |
228.9 |
0.649 |
2026 |
227.9 |
0.652 |
2027 |
226.9 |
0.655 |
2028 |
225.9 |
0.658 |
2029 |
225.0 |
0.661 |
2030 |
224.0 |
0.665 |
2031 |
223.1 |
0.668 |
2032 |
222.1 |
0.671 |
2033 |
221.2 |
0.675 |
2034 |
220.3 |
0.679 |
2035 |
219.3 |
0.683 |
2036 |
218.4 |
0.687 |
2037 |
217.6 |
0.691 |
2038 |
216.7 |
0.695 |
2039 |
215.8 |
0.700 |
2040 |
215.0 |
0.704 |
2041 |
214.1 |
0.709 |
2042 |
213.3 |
0.713 |
2043 |
212.4 |
0.718 |
2044 |
211.6 |
0.723 |
2045 |
210.8 |
0.728 |
2046 |
210.0 |
0.733 |
2047 |
209.3 |
0.738 |
2048 |
208.5 |
0.743 |
2049 |
207.7 |
0.748 |
2050 |
207.0 |
0.753 |
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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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