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 |
|
Discov num |
STF2294 |
|
Comp |
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|
Coord arcsec 2000 |
18 14 33.68 +00 10 32.9 |
|
| Date first |
1831 |
|
Date last |
2018 |
|
Obs |
230 |
|
| Pa first |
92 |
|
Pa last |
93.1 |
|
P.A. Now (θ) |
93.1° |
|
| Sep first |
1.1 |
|
Sep last |
1.347 |
|
Sep. Now (ρ) |
1.347" |
|
| Mag pri |
8.22 |
|
Mag sec |
8.55 |
|
delta mag (ΔM) |
0.33 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
+020 |
|
Sec motion ra |
+020 |
|
| Pri motion dec |
-035 |
|
Sec motion dec |
-035 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 167278 |
|
Constellation |
Ophiuchus |
|
SAO |
123283 |
|
HIP |
89393 |
|
| Tycho2 |
0431-00409-1 |
|
Gaia DR2 |
4274869292908169088 |
|
HD |
167278 |
|
GC |
24885 |
|
| ADS |
11186 |
|
BD |
BD+00 3892 |
|
Distance |
114.42 |
|
Distance ly |
373.24 |
|
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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