00520+3154 A 924
00h 52m 01.02s +31° 53' 59.3" P.A. 306.00 sep 0.4 mag 9.80,9.90 Sp F8
| Coord 2000 |
00520+3154 |
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Discov num |
A 924 |
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Comp |
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Coord arcsec 2000 |
00 52 01.02 +31 53 59.3 |
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| Date first |
1905 |
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Date last |
2017 |
|
Obs |
28 |
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| Pa first |
254 |
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Pa last |
305.6 |
|
P.A. Now (θ) |
305.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.38 |
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Sep. Now (ρ) |
0.38" |
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| Mag pri |
9.80 |
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Mag sec |
9.90 |
|
delta mag (ΔM) |
0.1 |
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Spectral class |
F8 (yellow-white) |
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| Pri motion ra |
-008 |
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Sec motion ra |
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| Pri motion dec |
+013 |
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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 |
Pisces |
|
Tycho2 |
2280-01106-1 |
|
ADS |
705 |
|
ORBITAL ELEMENTS
| Period (P) | 182.57y | ± 16.74 |
Periastron (T) | 1986.54y | ± 0.53 |
Semi-major axis (a) | 0.296a | ± 0.001 |
| Eccentricity (e) | 0.704 | ± 0.021 |
Inclination (i) | 154.2° | ± 6.2 |
Longitude of periastron (ω) | 318.2° | ± 17.6 |
| Node (Ω) | 44.8° | ± 18.1 |
Notes | | |
Reference | Hrt2009 | |
| Equinox | | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.9 |
0.182 |
| 2001 |
334.7 |
0.190 |
| 2002 |
331.8 |
0.197 |
| 2003 |
329.1 |
0.205 |
| 2004 |
326.5 |
0.212 |
| 2005 |
324.2 |
0.220 |
| 2006 |
321.9 |
0.227 |
| 2007 |
319.9 |
0.234 |
| 2008 |
317.9 |
0.241 |
| 2009 |
316.1 |
0.248 |
| 2010 |
314.3 |
0.255 |
| 2011 |
312.7 |
0.262 |
| 2012 |
311.1 |
0.268 |
| 2013 |
309.6 |
0.275 |
| 2014 |
308.2 |
0.281 |
| 2015 |
306.8 |
0.287 |
| 2016 |
305.5 |
0.293 |
| 2017 |
304.2 |
0.299 |
| 2018 |
303.0 |
0.305 |
| 2019 |
301.9 |
0.311 |
| 2020 |
300.7 |
0.317 |
| 2021 |
299.7 |
0.322 |
| 2022 |
298.6 |
0.328 |
| 2023 |
297.6 |
0.333 |
| 2024 |
296.6 |
0.338 |
| 2025 |
295.7 |
0.343 |
| 2026 |
294.7 |
0.348 |
| 2027 |
293.8 |
0.353 |
| 2028 |
293.0 |
0.358 |
| 2029 |
292.1 |
0.363 |
| 2030 |
291.3 |
0.367 |
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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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