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 |
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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 |
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Obs |
106 |
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Pa first |
174 |
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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 |
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Mag sec |
7.82 |
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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 |
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Constellation |
Aries |
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SAO |
74984 |
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HIP |
8622 |
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Tycho2 |
1756-00668-1 |
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HD |
11284 |
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GC |
2238 |
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ADS |
1473 |
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BD |
BD+23 246 |
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Distance |
131.06 |
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Distance ly |
427.52 |
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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 |
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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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