Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
(2020 HT1)
Classification: Apollo [NEO]          SPK-ID: 54016607
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

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 2458958.5 (2020-Apr-19.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5725023703176165 0.0015199  
a 2.308987151819554 0.0081142 au
q .9870865343699371 4.0768e-05 au
i 3.166232106926236 0.0062692 deg
node 22.30550824960108 0.0023 deg
peri 222.6519033179055 0.0099735 deg
M 351.4716106970483 0.046577 deg
tp 2458988.859542124961
0.0058077 TDB
period 1281.535677692763
n .2809129751644002 0.0014808 deg/d
Q 3.630887769269171 0.01276 au
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      5 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .36289  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-23 07:00:52  

Additional Information
 Earth MOID = .0205381 au 
 Jupiter MOID = 1.4256 au 
 T_jup = 3.344 
[ show covariance matrix ]

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 25.852   .60789 2 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2020-Apr-28 03:39 < 00:01 Earth 0.0283238769026883 0.0281317992106118 0.0285159493918981 9.7183994793665 9.70871488673827 2458967.652048867 0.493422375401934 9558.84073456498 29.8933791387041 -0.0482797611175476 281.538776245453 T 2 CATAB v2.0f-lin.ifort 2020-Apr-23 07:00:54 2020-Apr-23 07:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
FirstGov 2020-Dec-03 05:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin