23319+7317 A 897
23h 31m 51.93s +73° 16' 48.4" P.A. 331.00 sep 0.2 mag 9.61,10.69 Sp F8 dist. 225.73 pc (736.33 l.y.)
| Coord 2000 |
23319+7317 |
|
Discov num |
A 897 |
|
Comp |
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Coord arcsec 2000 |
23 31 51.93 +73 16 48.4 |
|
| Date first |
1904 |
|
Date last |
2007 |
|
Obs |
13 |
|
| Pa first |
115 |
|
Pa last |
331.4 |
|
P.A. Now (θ) |
331.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.178 |
|
Sep. Now (ρ) |
0.178" |
|
| Mag pri |
9.61 |
|
Mag sec |
10.69 |
|
delta mag (ΔM) |
1.08 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+046 |
|
Sec motion ra |
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|
| Pri motion dec |
+010 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
HIP |
116133 |
|
Tycho2 |
4490-00364-1 |
|
Gaia DR2 |
2228815553901076992 |
|
| ADS |
16820 |
|
BD |
BD+72 1107 |
|
Distance |
225.73 |
|
Distance ly |
736.33 |
|
ORBITAL ELEMENTS
| Period (P) | 283y | |
Periastron (T) | 2054y | |
Semi-major axis (a) | 0.397a | |
| Eccentricity (e) | 0.37 | |
Inclination (i) | 113° | |
Longitude of periastron (ω) | 222° | |
| Node (Ω) | 133° | |
Notes | | |
Reference | Hei1997 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
359.4 |
0.201 |
| 2001 |
357.7 |
0.203 |
| 2002 |
355.9 |
0.206 |
| 2003 |
354.2 |
0.209 |
| 2004 |
352.6 |
0.213 |
| 2005 |
351.0 |
0.216 |
| 2006 |
349.5 |
0.219 |
| 2007 |
348.0 |
0.222 |
| 2008 |
346.5 |
0.225 |
| 2009 |
345.1 |
0.229 |
| 2010 |
343.7 |
0.232 |
| 2011 |
342.4 |
0.235 |
| 2012 |
341.1 |
0.238 |
| 2013 |
339.8 |
0.241 |
| 2014 |
338.6 |
0.245 |
| 2015 |
337.4 |
0.248 |
| 2016 |
336.2 |
0.251 |
| 2017 |
335.1 |
0.253 |
| 2018 |
334.0 |
0.256 |
| 2019 |
332.9 |
0.259 |
| 2020 |
331.8 |
0.261 |
| 2021 |
330.7 |
0.264 |
| 2022 |
329.7 |
0.266 |
| 2023 |
328.7 |
0.268 |
| 2024 |
327.7 |
0.270 |
| 2025 |
326.7 |
0.272 |
| 2026 |
325.7 |
0.273 |
| 2027 |
324.7 |
0.274 |
| 2028 |
323.8 |
0.275 |
| 2029 |
322.8 |
0.276 |
| 2030 |
321.8 |
0.277 |
|
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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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