16422+4112 STF 2091 (HD 150903)
16h 42m 09.74s +41° 11' 42.9" P.A. 328.00 sep 0.4 mag 8.44,9.29 Sp F0 dist. 155.04 pc (505.74 l.y.)
Coord 2000 |
16422+4112 |
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Discov num |
STF2091 |
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Comp |
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Coord arcsec 2000 |
16 42 09.74 +41 11 42.9 |
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Date first |
1830 |
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Date last |
2012 |
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Obs |
110 |
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Pa first |
302 |
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Pa last |
328.2 |
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P.A. Now (θ) |
328.2° |
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Sep first |
1.3 |
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Sep last |
0.379 |
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Sep. Now (ρ) |
0.379" |
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Mag pri |
8.44 |
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Mag sec |
9.29 |
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delta mag (ΔM) |
0.85 |
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Spectral class |
F0 (yellow-white) |
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Pri motion ra |
-009 |
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Sec motion ra |
-009 |
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Pri motion dec |
-003 |
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Sec motion dec |
-003 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 150903 |
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Constellation |
Hercules |
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SAO |
46234 |
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HIP |
81774 |
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Tycho2 |
3074-00752-1 |
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HD |
150903 |
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GC |
22486 |
|
ADS |
10169 |
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BD |
BD+41 2742 |
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Distance |
155.04 |
|
Distance ly |
505.74 |
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ORBITAL ELEMENTS
Period (P) | 888y | |
Periastron (T) | 2059y | |
Semi-major axis (a) | 0.877a | |
Eccentricity (e) | 0.72 | |
Inclination (i) | 64.7° | |
Longitude of periastron (ω) | 321.9° | |
Node (Ω) | 126.5° | |
Notes | | |
Reference | Zir2014a | |
Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
321.7 |
0.486 |
2001 |
322.1 |
0.478 |
2002 |
322.5 |
0.470 |
2003 |
322.9 |
0.462 |
2004 |
323.4 |
0.453 |
2005 |
323.8 |
0.445 |
2006 |
324.3 |
0.436 |
2007 |
324.8 |
0.427 |
2008 |
325.3 |
0.419 |
2009 |
325.8 |
0.410 |
2010 |
326.4 |
0.401 |
2011 |
327.0 |
0.392 |
2012 |
327.6 |
0.383 |
2013 |
328.3 |
0.374 |
2014 |
328.9 |
0.365 |
2015 |
329.6 |
0.355 |
2016 |
330.4 |
0.346 |
2017 |
331.2 |
0.337 |
2018 |
332.0 |
0.327 |
2019 |
332.9 |
0.318 |
2020 |
333.9 |
0.308 |
2021 |
334.9 |
0.299 |
2022 |
335.9 |
0.289 |
2023 |
337.1 |
0.280 |
2024 |
338.3 |
0.270 |
2025 |
339.6 |
0.260 |
2026 |
341.0 |
0.251 |
2027 |
342.6 |
0.241 |
2028 |
344.2 |
0.232 |
2029 |
346.0 |
0.222 |
2030 |
348.0 |
0.213 |
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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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