17506+0714 STT 337 (HD 162405)
17h 50m 34.90s +07° 13' 58.0" P.A. 163.00 sep 0.6 mag 8.18,8.98 Sp F6.1V+F6V dist. 106.61 pc (347.76 l.y.)
Coord 2000 |
17506+0714 |
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Discov num |
STT 337 |
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Comp |
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Coord arcsec 2000 |
17 50 34.90 +07 13 58.0 |
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Date first |
1843 |
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Date last |
2021 |
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Obs |
129 |
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Pa first |
128 |
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Pa last |
163.3 |
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P.A. Now (θ) |
163.3° |
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Sep first |
0.5 |
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Sep last |
0.608 |
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Sep. Now (ρ) |
0.608" |
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Mag pri |
8.18 |
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Mag sec |
8.98 |
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delta mag (ΔM) |
0.8 |
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Spectral class |
F6.1V+F6V (yellow-white/yellow-white) |
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Pri motion ra |
+012 |
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Sec motion ra |
+012 |
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Pri motion dec |
+019 |
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Sec motion dec |
+019 |
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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 162405 |
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Constellation |
Ophiuchus |
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SAO |
122818 |
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HIP |
87325 |
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Tycho2 |
0428-00083-1 |
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Gaia DR2 |
4475819061644942720 |
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HD |
162405 |
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GC |
24230 |
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ADS |
10828 |
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BD |
BD+07 3481 |
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Distance |
106.61 |
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Distance ly |
347.76 |
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ORBITAL ELEMENTS
Period (P) | 1000y | |
Periastron (T) | 1787y | |
Semi-major axis (a) | 1.389a | |
Eccentricity (e) | 0.613 | |
Inclination (i) | 100.1° | |
Longitude of periastron (ω) | 141.7° | |
Node (Ω) | 134.1° | |
Notes | n | |
Reference | Doc2015f | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
169.9 |
0.488 |
2001 |
169.5 |
0.494 |
2002 |
169.1 |
0.500 |
2003 |
168.7 |
0.505 |
2004 |
168.4 |
0.511 |
2005 |
168.0 |
0.516 |
2006 |
167.6 |
0.522 |
2007 |
167.3 |
0.528 |
2008 |
166.9 |
0.533 |
2009 |
166.6 |
0.539 |
2010 |
166.3 |
0.545 |
2011 |
166.0 |
0.550 |
2012 |
165.6 |
0.556 |
2013 |
165.3 |
0.562 |
2014 |
165.0 |
0.567 |
2015 |
164.7 |
0.573 |
2016 |
164.4 |
0.579 |
2017 |
164.2 |
0.585 |
2018 |
163.9 |
0.590 |
2019 |
163.6 |
0.596 |
2020 |
163.3 |
0.602 |
2021 |
163.1 |
0.607 |
2022 |
162.8 |
0.613 |
2023 |
162.6 |
0.619 |
2024 |
162.3 |
0.625 |
2025 |
162.1 |
0.630 |
2026 |
161.8 |
0.636 |
2027 |
161.6 |
0.642 |
2028 |
161.4 |
0.647 |
2029 |
161.1 |
0.653 |
2030 |
160.9 |
0.659 |
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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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