10269+1713 STT 217 (HD 90444)
10h 26m 53.01s +17° 13' 09.9" P.A. 150.00 sep 0.8 mag 7.85,8.58 Sp F6V dist. 84.75 pc (276.45 l.y.)
Coord 2000 |
10269+1713 |
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Discov num |
STT 217 |
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Comp |
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Coord arcsec 2000 |
10 26 53.01 +17 13 09.9 |
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Date first |
1843 |
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Date last |
2019 |
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Obs |
174 |
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Pa first |
147 |
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Pa last |
149.9 |
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P.A. Now (θ) |
149.3° |
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Sep first |
0.4 |
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Sep last |
0.788 |
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Sep. Now (ρ) |
0.81" |
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Mag pri |
7.85 |
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Mag sec |
8.58 |
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delta mag (ΔM) |
0.73 |
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Spectral class |
F6V (yellow-white) |
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Pri motion ra |
-042 |
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Sec motion ra |
-042 |
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Pri motion dec |
-067 |
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Sec motion dec |
-067 |
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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 90444 |
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Constellation |
Leo |
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SAO |
99127 |
|
HIP |
51145 |
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Tycho2 |
1420-00152-1 |
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HD |
90444 |
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ADS |
7775 |
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BD |
BD+17 2224 |
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Distance |
84.75 |
|
Distance ly |
276.45 |
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ORBITAL ELEMENTS
Period (P) | 139.789y | |
Periastron (T) | 1966.983y | |
Semi-major axis (a) | 0.47a | |
Eccentricity (e) | 0.984 | |
Inclination (i) | 47.3° | |
Longitude of periastron (ω) | 219.9° | |
Node (Ω) | 121.2° | |
Notes | n | |
Reference | Sca2015b | |
Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
146.6 |
0.690 |
2001 |
146.7 |
0.698 |
2002 |
146.9 |
0.706 |
2003 |
147.0 |
0.713 |
2004 |
147.1 |
0.721 |
2005 |
147.3 |
0.728 |
2006 |
147.4 |
0.735 |
2007 |
147.5 |
0.741 |
2008 |
147.7 |
0.747 |
2009 |
147.8 |
0.753 |
2010 |
147.9 |
0.759 |
2011 |
148.0 |
0.764 |
2012 |
148.1 |
0.769 |
2013 |
148.2 |
0.774 |
2014 |
148.4 |
0.779 |
2015 |
148.5 |
0.783 |
2016 |
148.6 |
0.787 |
2017 |
148.7 |
0.791 |
2018 |
148.8 |
0.795 |
2019 |
148.9 |
0.798 |
2020 |
149.0 |
0.802 |
2021 |
149.1 |
0.805 |
2022 |
149.2 |
0.807 |
2023 |
149.3 |
0.810 |
2024 |
149.4 |
0.812 |
2025 |
149.5 |
0.814 |
2026 |
149.6 |
0.816 |
2027 |
149.7 |
0.818 |
2028 |
149.9 |
0.819 |
2029 |
150.0 |
0.820 |
2030 |
150.1 |
0.821 |
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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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