01512+2439 HO 311 (HD 11284)
01h 51m 13.34s +24° 39' 08.0" P.A. 178.00 sep 0.4 mag 8.22,7.82 Sp F1V dist. 131.06 pc (427.52 l.y.)
| Coord 2000 |
01512+2439 |
|
Discov num |
HO 311 |
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Comp |
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Coord arcsec 2000 |
01 51 13.34 +24 39 08.0 |
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| Date first |
1890 |
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Date last |
2018 |
|
Obs |
106 |
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| Pa first |
174 |
|
Pa last |
177.7 |
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P.A. Now (θ) |
0.8° |
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| Sep first |
0.4 |
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Sep last |
0.417 |
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Sep. Now (ρ) |
0.429" |
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| Mag pri |
8.22 |
|
Mag sec |
7.82 |
|
delta mag (ΔM) |
0.4 |
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Spectral class |
F1V (yellow-white) |
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| Pri motion ra |
-004 |
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Sec motion ra |
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| Pri motion dec |
-026 |
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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
| Name |
HD 11284 |
|
Constellation |
Aries |
|
SAO |
74984 |
|
HIP |
8622 |
|
| Tycho2 |
1756-00668-1 |
|
HD |
11284 |
|
GC |
2238 |
|
ADS |
1473 |
|
| BD |
BD+23 246 |
|
Distance |
131.06 |
|
Distance ly |
427.52 |
|
ORBITAL ELEMENTS
| Period (P) | 119.3y | ± 6.2 |
Periastron (T) | 1982.72y | ± 0.4 |
Semi-major axis (a) | 0.298a | ± 0.0062 |
| Eccentricity (e) | 0.888 | ± 0.016 |
Inclination (i) | 52.8° | ± 1.7 |
Longitude of periastron (ω) | 142° | ± 3.9 |
| Node (Ω) | 32.8° | ± 3.9 |
Notes | n | |
Reference | Hrt1989 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
346.1 |
0.255 |
| 2001 |
347.2 |
0.265 |
| 2002 |
348.2 |
0.275 |
| 2003 |
349.2 |
0.285 |
| 2004 |
350.0 |
0.295 |
| 2005 |
350.9 |
0.304 |
| 2006 |
351.7 |
0.313 |
| 2007 |
352.4 |
0.322 |
| 2008 |
353.1 |
0.330 |
| 2009 |
353.8 |
0.338 |
| 2010 |
354.4 |
0.346 |
| 2011 |
355.0 |
0.354 |
| 2012 |
355.6 |
0.361 |
| 2013 |
356.2 |
0.369 |
| 2014 |
356.7 |
0.376 |
| 2015 |
357.2 |
0.382 |
| 2016 |
357.7 |
0.389 |
| 2017 |
358.2 |
0.395 |
| 2018 |
358.7 |
0.401 |
| 2019 |
359.1 |
0.407 |
| 2020 |
359.6 |
0.413 |
| 2021 |
360.0 |
0.419 |
| 2022 |
0.4 |
0.424 |
| 2023 |
0.8 |
0.429 |
| 2024 |
1.2 |
0.434 |
| 2025 |
1.6 |
0.439 |
| 2026 |
2.0 |
0.443 |
| 2027 |
2.4 |
0.448 |
| 2028 |
2.7 |
0.452 |
| 2029 |
3.1 |
0.456 |
| 2030 |
3.5 |
0.459 |
| 2031 |
3.8 |
0.463 |
| 2032 |
4.2 |
0.466 |
| 2033 |
4.5 |
0.469 |
| 2034 |
4.8 |
0.472 |
| 2035 |
5.2 |
0.475 |
| 2036 |
5.5 |
0.478 |
| 2037 |
5.8 |
0.480 |
| 2038 |
6.1 |
0.483 |
| 2039 |
6.5 |
0.485 |
| 2040 |
6.8 |
0.487 |
| 2041 |
7.1 |
0.488 |
| 2042 |
7.4 |
0.490 |
| 2043 |
7.7 |
0.491 |
| 2044 |
8.0 |
0.492 |
| 2045 |
8.3 |
0.493 |
| 2046 |
8.6 |
0.494 |
| 2047 |
8.9 |
0.495 |
| 2048 |
9.2 |
0.495 |
| 2049 |
9.5 |
0.495 |
| 2050 |
9.8 |
0.495 |
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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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