08571+1139 HDS 1296
08h 57m 04.68s +11° 38' 48.8" P.A. 236.00 sep 0.7 mag 10.84,12.66 Sp M1V dist. 17.01 pc (55.49 l.y.)
| Coord 2000 |
08571+1139 |
|
Discov num |
HDS1296 |
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Comp |
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Coord arcsec 2000 |
08 57 04.68 +11 38 48.8 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
29 |
|
| Pa first |
233 |
|
Pa last |
235.5 |
|
P.A. Now (θ) |
233.8° |
|
| Sep first |
0.8 |
|
Sep last |
0.742 |
|
Sep. Now (ρ) |
0.754" |
|
| Mag pri |
10.84 |
|
Mag sec |
12.66 |
|
delta mag (ΔM) |
1.82 |
|
Spectral class |
M1V (red) |
|
| Pri motion ra |
-035 |
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Sec motion ra |
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| Pri motion dec |
-318 |
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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 |
Cancer |
|
HIP |
43948 |
|
Tycho2 |
0814-02449-1 |
|
Gaia DR2 |
604756890202697728 |
|
| GL |
Gl 330 |
|
BD |
BD+12 1944 |
|
Distance |
17.01 |
|
Distance ly |
55.49 |
|
ORBITAL ELEMENTS
| Period (P) | 32.6y | ± 0.4 |
Periastron (T) | 2003.31y | ± 0.07 |
Semi-major axis (a) | 557m | ± 8 |
| Eccentricity (e) | 0.822 | ± 0.003 |
Inclination (i) | 106.8° | ± 0.4 |
Longitude of periastron (ω) | 131.2° | ± 0.4 |
| Node (Ω) | 219.1° | ± 0.3 |
Notes | | |
Reference | Mit2021 | |
| Equinox | | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
222.0 |
0.497 |
| 2001 |
219.2 |
0.398 |
| 2002 |
213.9 |
0.258 |
| 2003 |
166.1 |
0.043 |
| 2004 |
25.6 |
0.140 |
| 2005 |
355.0 |
0.128 |
| 2006 |
319.2 |
0.129 |
| 2007 |
291.6 |
0.163 |
| 2008 |
275.2 |
0.213 |
| 2009 |
265.3 |
0.269 |
| 2010 |
258.9 |
0.324 |
| 2011 |
254.2 |
0.378 |
| 2012 |
250.8 |
0.428 |
| 2013 |
248.0 |
0.476 |
| 2014 |
245.7 |
0.521 |
| 2015 |
243.8 |
0.562 |
| 2016 |
242.1 |
0.599 |
| 2017 |
240.7 |
0.633 |
| 2018 |
239.3 |
0.663 |
| 2019 |
238.1 |
0.690 |
| 2020 |
236.9 |
0.712 |
| 2021 |
235.8 |
0.731 |
| 2022 |
234.8 |
0.745 |
| 2023 |
233.8 |
0.754 |
| 2024 |
232.8 |
0.759 |
| 2025 |
231.8 |
0.758 |
| 2026 |
230.9 |
0.752 |
| 2027 |
229.8 |
0.739 |
| 2028 |
228.8 |
0.720 |
| 2029 |
227.7 |
0.692 |
| 2030 |
226.4 |
0.655 |
|
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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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