18146+0011 STF 2294 (HD 167278)
18h 14m 33.68s +00° 10' 32.9" P.A. 93.00 sep 1.3 mag 8.22,8.55 Sp F2 dist. 114.42 pc (373.24 l.y.)
Coord 2000 |
18146+0011 |
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Discov num |
STF2294 |
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Comp |
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Coord arcsec 2000 |
18 14 33.68 +00 10 32.9 |
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Date first |
1831 |
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Date last |
2018 |
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Obs |
230 |
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Pa first |
92 |
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Pa last |
93.1 |
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P.A. Now (θ) |
93.1° |
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Sep first |
1.1 |
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Sep last |
1.347 |
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Sep. Now (ρ) |
1.347" |
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Mag pri |
8.22 |
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Mag sec |
8.55 |
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delta mag (ΔM) |
0.33 |
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Spectral class |
F2 (yellow-white) |
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Pri motion ra |
+020 |
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Sec motion ra |
+020 |
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Pri motion dec |
-035 |
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Sec motion dec |
-035 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 167278 |
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Constellation |
Ophiuchus |
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SAO |
123283 |
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HIP |
89393 |
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Tycho2 |
0431-00409-1 |
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Gaia DR2 |
4274869292908169088 |
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HD |
167278 |
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GC |
24885 |
|
ADS |
11186 |
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BD |
BD+00 3892 |
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Distance |
114.42 |
|
Distance ly |
373.24 |
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ORBITAL ELEMENTS
Period (P) | 344.837y | |
Periastron (T) | 1890.086y | |
Semi-major axis (a) | 0.732a | |
Eccentricity (e) | 0.935 | |
Inclination (i) | 101.6° | |
Longitude of periastron (ω) | 173.8° | |
Node (Ω) | 91.1° | |
Notes | | |
Reference | Sca2015b | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
93.7 |
1.264 |
2001 |
93.7 |
1.268 |
2002 |
93.7 |
1.273 |
2003 |
93.6 |
1.277 |
2004 |
93.6 |
1.281 |
2005 |
93.6 |
1.285 |
2006 |
93.6 |
1.289 |
2007 |
93.5 |
1.293 |
2008 |
93.5 |
1.297 |
2009 |
93.5 |
1.301 |
2010 |
93.5 |
1.305 |
2011 |
93.4 |
1.309 |
2012 |
93.4 |
1.312 |
2013 |
93.4 |
1.316 |
2014 |
93.4 |
1.319 |
2015 |
93.4 |
1.323 |
2016 |
93.3 |
1.326 |
2017 |
93.3 |
1.330 |
2018 |
93.3 |
1.333 |
2019 |
93.3 |
1.336 |
2020 |
93.2 |
1.339 |
2021 |
93.2 |
1.342 |
2022 |
93.2 |
1.345 |
2023 |
93.2 |
1.348 |
2024 |
93.1 |
1.351 |
2025 |
93.1 |
1.353 |
2026 |
93.1 |
1.356 |
2027 |
93.1 |
1.359 |
2028 |
93.1 |
1.361 |
2029 |
93.0 |
1.364 |
2030 |
93.0 |
1.366 |
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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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