03213+1038 HEI 449 (HD 20779)
03h 21m 18.10s +10° 37' 47.4" P.A. 53.00 sep 0.3 mag 9.19,9.43 Sp F8 dist. 94.34 pc (307.74 l.y.)
Coord 2000 |
03213+1038 |
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Discov num |
HEI 449 |
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Comp |
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Coord arcsec 2000 |
03 21 18.10 +10 37 47.4 |
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Date first |
1987 |
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Date last |
2020 |
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Obs |
20 |
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Pa first |
61 |
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Pa last |
52.7 |
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P.A. Now (θ) |
50.6° |
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Sep first |
0.3 |
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Sep last |
0.288 |
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Sep. Now (ρ) |
0.27" |
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Mag pri |
9.19 |
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Mag sec |
9.43 |
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delta mag (ΔM) |
0.24 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-037 |
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Sec motion ra |
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Pri motion dec |
-030 |
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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
Name |
HD 20779 |
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Constellation |
Aries |
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SAO |
93402 |
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HIP |
15633 |
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Tycho2 |
0652-00265-1 |
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HD |
20779 |
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BD |
BD+10 432 |
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Distance |
94.34 |
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Distance ly |
307.74 |
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ORBITAL ELEMENTS
Period (P) | 32.41y | ± 0.64 |
Periastron (T) | 2001.35y | ± 0.13 |
Semi-major axis (a) | 0.165a | ± 0.001 |
Eccentricity (e) | 0.806 | ± 0.012 |
Inclination (i) | 114.6° | ± 1.9 |
Longitude of periastron (ω) | 180.4° | ± 3.8 |
Node (Ω) | 55.6° | ± 1.3 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
7.3 |
0.042 |
2001 |
264.4 |
0.027 |
2002 |
166.6 |
0.022 |
2003 |
93.3 |
0.056 |
2004 |
79.5 |
0.096 |
2005 |
73.6 |
0.130 |
2006 |
70.0 |
0.160 |
2007 |
67.5 |
0.186 |
2008 |
65.6 |
0.208 |
2009 |
64.0 |
0.227 |
2010 |
62.7 |
0.244 |
2011 |
61.5 |
0.258 |
2012 |
60.4 |
0.269 |
2013 |
59.4 |
0.279 |
2014 |
58.5 |
0.286 |
2015 |
57.6 |
0.292 |
2016 |
56.7 |
0.296 |
2017 |
55.9 |
0.298 |
2018 |
55.1 |
0.298 |
2019 |
54.2 |
0.296 |
2020 |
53.4 |
0.292 |
2021 |
52.5 |
0.287 |
2022 |
51.5 |
0.279 |
2023 |
50.6 |
0.270 |
2024 |
49.5 |
0.258 |
2025 |
48.3 |
0.244 |
2026 |
47.0 |
0.228 |
2027 |
45.4 |
0.209 |
2028 |
43.5 |
0.187 |
2029 |
41.1 |
0.162 |
2030 |
37.6 |
0.133 |
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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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