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(2020 HL1)
Classification: Apollo [NEO]          SPK-ID: 54016586
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2458961.5 (2020-Apr-22.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6136019512451029 0.0014606  
a 2.449434609771644 0.0090033 au
q .9464567537684762 9.8726e-05 au
i 1.415346179680742 0.0021084 deg
node 241.8820466891401 0.011748 deg
peri 19.73267207458791 0.0054758 deg
M 349.6899908624108 0.059958 deg
tp 2459001.600865976672
0.012115 TDB
period 1400.222983214312
n .2571019075644611 0.0014175 deg/d
Q 3.952412465774811 0.014528 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      12 days  
   first obs. used      2020-04-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .43176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-28 07:10:57  

Additional Information
 Earth MOID = .00586312 au 
 Jupiter MOID = 1.14831 au 
 T_jup = 3.208 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 2.133234685197611E-6 -1.441548470636476E-7 -1.769113418514347E-5 1.709953801536277E-5 -7.782632704440338E-6 3.078816146345602E-6
q -1.441548470636476E-7 9.746800298088391E-9 1.19497176997227E-6 -1.153947911921747E-6 5.23471527639651E-7 -2.08109345815975E-7
tp -1.769113418514347E-5 1.19497176997227E-6 .0001467652899528793 -.000141952765154901 6.47721753760171E-5 -2.552765871349621E-5
node 1.709953801536277E-5 -1.153947911921747E-6 -.000141952765154901 .0001380174359126832 -6.358307842081999E-5 2.464016688279385E-5
peri -7.782632704440338E-6 5.23471527639651E-7 6.47721753760171E-5 -6.358307842081999E-5 2.998430077780714E-5 -1.118444021763947E-5
i 3.078816146345602E-6 -2.08109345815975E-7 -2.552765871349621E-5 2.464016688279385E-5 -1.118444021763947E-5 4.445191166228194E-6

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.268   .33707 6 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
FirstGov 2020-Nov-28 23:39 UT
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