02288+3215 WOR 2
02h 28m 46.49s +32° 15' 34.2" P.A. 285.00 sep 0.2 mag 10.13,10.84 Sp M0p dist. 26.17 pc (85.37 l.y.)
| Coord 2000 |
02288+3215 |
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Discov num |
WOR 2 |
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Comp |
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Coord arcsec 2000 |
02 28 46.49 +32 15 34.2 |
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| Date first |
1959 |
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Date last |
2016 |
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Obs |
35 |
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| Pa first |
105 |
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Pa last |
284.9 |
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P.A. Now (θ) |
92.6° |
|
| Sep first |
0.3 |
|
Sep last |
0.218 |
|
Sep. Now (ρ) |
0.282" |
|
| Mag pri |
10.13 |
|
Mag sec |
10.84 |
|
delta mag (ΔM) |
0.71 |
|
Spectral class |
M0p (red) |
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| Pri motion ra |
+445 |
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Sec motion ra |
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| Pri motion dec |
+096 |
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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
| Constellation |
Triangulum |
|
HIP |
11542 |
|
Tycho2 |
2327-00400-1 |
|
GL |
Gl 99A |
|
| BD |
BD+31 434 |
|
Distance |
26.17 |
|
Distance ly |
85.37 |
|
ORBITAL ELEMENTS
| Period (P) | 24.015y | ± 0.086 |
Periastron (T) | 56340d (2013.13y) | ± 43 |
Semi-major axis (a) | 360.53m | ± 0.72 |
| Eccentricity (e) | 0.2087 | ± 0.0028 |
Inclination (i) | 84.605° | ± 0.049 |
Longitude of periastron (ω) | 152.6° | ± 1.9 |
| Node (Ω) | 98.836° | ± 0.09 |
Notes | n | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | 2016 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
94.5 |
0.339 |
| 2001 |
95.9 |
0.383 |
| 2002 |
97.0 |
0.412 |
| 2003 |
98.0 |
0.425 |
| 2004 |
99.0 |
0.421 |
| 2005 |
100.1 |
0.399 |
| 2006 |
101.3 |
0.359 |
| 2007 |
103.0 |
0.300 |
| 2008 |
105.6 |
0.224 |
| 2009 |
111.5 |
0.134 |
| 2010 |
145.5 |
0.041 |
| 2011 |
259.1 |
0.082 |
| 2012 |
271.6 |
0.174 |
| 2013 |
275.7 |
0.246 |
| 2014 |
278.2 |
0.286 |
| 2015 |
280.3 |
0.289 |
| 2016 |
282.6 |
0.257 |
| 2017 |
286.1 |
0.200 |
| 2018 |
293.0 |
0.127 |
| 2019 |
320.9 |
0.052 |
| 2020 |
61.7 |
0.060 |
| 2021 |
83.6 |
0.138 |
| 2022 |
89.7 |
0.214 |
| 2023 |
92.6 |
0.282 |
| 2024 |
94.5 |
0.339 |
| 2025 |
95.9 |
0.382 |
| 2026 |
97.0 |
0.412 |
| 2027 |
98.0 |
0.425 |
| 2028 |
99.0 |
0.421 |
| 2029 |
100.1 |
0.400 |
| 2030 |
101.3 |
0.360 |
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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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