04252+1716 AST 4
04h 25m 13.54s +17° 16' 05.5" P.A. 264.00 sep 0.1 mag 14.00,14.00 Sp M3.5V+dM+
| Coord 2000 |
04252+1716 |
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Discov num |
AST 4 |
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Comp |
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Coord arcsec 2000 |
04 25 13.54 +17 16 05.5 |
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| Date first |
1994 |
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Date last |
2020 |
|
Obs |
17 |
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| Pa first |
292 |
|
Pa last |
263.7 |
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P.A. Now (θ) |
263.7° |
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| Sep first |
0.1 |
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Sep last |
0.073 |
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Sep. Now (ρ) |
0.073" |
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| Mag pri |
14.00 |
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Mag sec |
14.00 |
|
delta mag (ΔM) |
0 |
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Spectral class |
M3.5V+dM+ (red) |
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| Pri motion ra |
+115 |
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Sec motion ra |
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| Pri motion dec |
-025 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
ORBITAL ELEMENTS
| Period (P) | 2.705y | ± 0.004 |
Periastron (T) | 51522.4d (1999.939y) | ± 2.5 |
Semi-major axis (a) | 45.5m | ± 0.6 |
| Eccentricity (e) | 0.79 | ± 0.006 |
Inclination (i) | 14° | ± 8 |
Longitude of periastron (ω) | 149° | ± 13 |
| Node (Ω) | 289.5° | ± 0.9 |
Notes | n | |
Reference | AST2021 | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
158.1 |
0.015 |
| 2001 |
251.8 |
0.078 |
| 2002 |
279.7 |
0.065 |
| 2003 |
222.9 |
0.046 |
| 2004 |
259.3 |
0.081 |
| 2005 |
295.1 |
0.047 |
| 2006 |
238.7 |
0.064 |
| 2007 |
266.9 |
0.078 |
| 2008 |
3.1 |
0.014 |
| 2009 |
248.6 |
0.075 |
| 2010 |
275.6 |
0.070 |
| 2011 |
211.5 |
0.036 |
| 2012 |
256.4 |
0.080 |
| 2013 |
287.8 |
0.055 |
| 2014 |
233.8 |
0.058 |
| 2015 |
263.9 |
0.080 |
| 2016 |
316.5 |
0.029 |
| 2017 |
245.1 |
0.072 |
| 2018 |
272.0 |
0.074 |
| 2019 |
189.0 |
0.023 |
| 2020 |
253.5 |
0.079 |
| 2021 |
282.3 |
0.062 |
| 2022 |
227.4 |
0.051 |
| 2023 |
261.0 |
0.081 |
| 2024 |
300.7 |
0.041 |
| 2025 |
241.2 |
0.067 |
| 2026 |
268.7 |
0.077 |
| 2027 |
98.8 |
0.010 |
| 2028 |
250.4 |
0.077 |
| 2029 |
277.8 |
0.068 |
| 2030 |
218.6 |
0.042 |
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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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