Catalogue of the Solar System Small Bodies Orbital Evolution
Catalogue of the Solar System Small Bodies Orbital Evolution
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Summary information
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Closest approaches
Approaches archive
Diagram 2D
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Asteroid information
General data
Initial data
Approaches
Asteroid orbit evolution
Tables
Graphs
3D animation
Calculation

Asteroid General Data

2009 HL21

General information

Preliminary designation2009 HL21
GroupApollo
Absolute magnitude22.44
Approximate diameter (m)86
Approximate mass (kg)1.18·109
Number of observations138
Arc length (days)5496

Approaches

No approaches found

Orbit initial data

Date of initial data06/09/2026
M – mean anomaly (degrees)16.260554
a – orbit major semiaxis (astronomical units)1.66379400
e – orbit eccentricity0.44472400
ω – orbit ascending node-perihelion angle (degrees)9.454895
Ω – longitude of orbit ascending node (degrees)144.324326
i – orbit inclination to the ecliptic plane (degrees)1.009963
Details...

Orbital evolution

Date
M
a
e
ω
Ω
i
q
P
01/13/1829234.8152881.655733020.442646295.094565148.0023130.9687460.922828942.130522
01/21/185885.8616571.660622510.443714765.860564147.3695590.9730950.923779792.139967
01/29/1887293.1582711.659219040.443351376.102403147.3106900.9804590.923602012.137254
02/07/1916148.8018741.656017960.443125577.268301146.1076590.9683410.922194062.131072
02/14/19459.4571421.656257690.442786097.458640145.9763940.9751630.922889822.131535
02/22/1974221.0652371.660731140.444084668.257783145.1314761.0070380.923225912.140177
03/02/200368.2498861.659519990.443662628.424333145.0971741.0133550.923253002.137836
03/09/2032261.7048451.663342750.444667639.522143144.2710361.0099900.923708072.145227
03/17/206190.5307101.663539870.444384069.710451144.2810471.0168270.924289272.145608
03/25/2090283.9351341.661210560.4437810810.000658144.1974461.0250410.923996742.141103
04/03/2119126.2990971.660201130.4433518910.237165144.1386311.0324830.924147832.139152
04/10/2148326.0647681.663018470.4440738810.703076143.9077841.0358970.924515402.144600
04/18/2177156.0945761.663484550.4447396910.892528143.8765571.0417200.923666942.145501
Detailed table... Graphs... 3D animation... Calculation on the date...

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This project was supported by the Federal Agency of Education (project codes RNP 2.1.1.1689, RNP 2.1.1.745).
Samara State Technical University
Applied Mathematics and Information Science Department
Яндекс.Метрика