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
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
(2020 HQ4)
Classification: Apollo [NEO]          SPK-ID: 54016691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134550209081211 6.7383e-05  
a 1.249926465264972 0.00010212 au
q .9831233854882235 3.9017e-06 au
i .140715877369917 4.0939e-05 deg
node 251.9274785262775 0.00078166 deg
peri 286.2385275132506 0.00095445 deg
M 189.8156657374894 0.024654 deg
tp 2459441.791599152867
(2021-Aug-15.29159915)
0.064526 TDB
period 510.4169903267485
1.40
0.062554
0.0001713
d
yr
n .7053056752079165 8.6438e-05 deg/d
Q 1.516729545041721 0.00012392 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      27 days  
   first obs. used      2020-04-22  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .4576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-19 07:54:26  

Additional Information
 Earth MOID = .00179809 au 
 Jupiter MOID = 3.44214 au 
 T_jup = 5.121 
[ 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 27.0   .44991 MPO546171 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 00:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin