18462+6412 HU 937
18h 46m 13.38s +64° 11' 44.4" P.A. 333.00 sep 1.0 mag 8.85,9.90 Sp F8 dist. 97.75 pc (318.86 l.y.)
| Coord 2000 |
18462+6412 |
|
Discov num |
HU 937 |
|
Comp |
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Coord arcsec 2000 |
18 46 13.38 +64 11 44.4 |
|
| Date first |
1904 |
|
Date last |
2016 |
|
Obs |
54 |
|
| Pa first |
114 |
|
Pa last |
332.7 |
|
P.A. Now (θ) |
332.7° |
|
| Sep first |
0.3 |
|
Sep last |
1.045 |
|
Sep. Now (ρ) |
1.045" |
|
| Mag pri |
8.85 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
1.05 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
+022 |
|
| Pri motion dec |
-070 |
|
Sec motion dec |
-070 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
HIP |
92100 |
|
Tycho2 |
4223-01516-1 |
|
Gaia DR2 |
2253430011472599936 |
|
| ADS |
11692 |
|
BD |
BD+64 1290 |
|
Distance |
97.75 |
|
Distance ly |
318.86 |
|
ORBITAL ELEMENTS
| Period (P) | 225.53y | |
Periastron (T) | 1678.6y | |
Semi-major axis (a) | 0.997a | |
| Eccentricity (e) | 0.8 | |
Inclination (i) | 80.1° | |
Longitude of periastron (ω) | 304.4° | |
| Node (Ω) | 166.8° | |
Notes | | |
Reference | USN2006b | |
| Equinox | 2000 | |
Last observation | 2003 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
329.8 |
0.906 |
| 2001 |
330.0 |
0.915 |
| 2002 |
330.2 |
0.924 |
| 2003 |
330.4 |
0.933 |
| 2004 |
330.6 |
0.942 |
| 2005 |
330.8 |
0.951 |
| 2006 |
330.9 |
0.959 |
| 2007 |
331.1 |
0.968 |
| 2008 |
331.3 |
0.976 |
| 2009 |
331.5 |
0.985 |
| 2010 |
331.6 |
0.993 |
| 2011 |
331.8 |
1.001 |
| 2012 |
331.9 |
1.009 |
| 2013 |
332.1 |
1.016 |
| 2014 |
332.3 |
1.024 |
| 2015 |
332.4 |
1.032 |
| 2016 |
332.6 |
1.039 |
| 2017 |
332.7 |
1.046 |
| 2018 |
332.9 |
1.053 |
| 2019 |
333.0 |
1.060 |
| 2020 |
333.2 |
1.067 |
| 2021 |
333.3 |
1.074 |
| 2022 |
333.4 |
1.080 |
| 2023 |
333.6 |
1.087 |
| 2024 |
333.7 |
1.093 |
| 2025 |
333.9 |
1.099 |
| 2026 |
334.0 |
1.105 |
| 2027 |
334.1 |
1.111 |
| 2028 |
334.3 |
1.117 |
| 2029 |
334.4 |
1.122 |
| 2030 |
334.5 |
1.128 |
| 2031 |
334.6 |
1.133 |
| 2032 |
334.8 |
1.138 |
| 2033 |
334.9 |
1.143 |
| 2034 |
335.0 |
1.148 |
| 2035 |
335.1 |
1.153 |
| 2036 |
335.3 |
1.157 |
| 2037 |
335.4 |
1.162 |
| 2038 |
335.5 |
1.166 |
| 2039 |
335.6 |
1.170 |
| 2040 |
335.8 |
1.174 |
| 2041 |
335.9 |
1.177 |
| 2042 |
336.0 |
1.181 |
| 2043 |
336.1 |
1.184 |
| 2044 |
336.2 |
1.188 |
| 2045 |
336.3 |
1.191 |
| 2046 |
336.5 |
1.193 |
| 2047 |
336.6 |
1.196 |
| 2048 |
336.7 |
1.199 |
| 2049 |
336.8 |
1.201 |
| 2050 |
336.9 |
1.203 |
|
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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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