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 HF4)
Classification: Apollo [NEO]          SPK-ID: 54016681
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02444480910509813 3.7507e-06  
a 1.015495608028144 5.4966e-06 au
q .9906720117428304 9.158e-06 au
i 4.834588500731071 0.0054598 deg
node 39.14614923816868 0.0035257 deg
peri 29.44653551468939 0.014141 deg
M 13.5164603970245 0.022981 deg
tp 2459186.466177588131
(2020-Dec-02.96617759)
0.023748 TDB
period 373.7795191842415
1.02
0.0030348
8.309e-06
d
yr
n .9631346329132352 7.8198e-06 deg/d
Q 1.040319204313457 5.631e-06 au
  Orbit Determination Parameters
   # obs. used (total)      28  
   data-arc span      12 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .6358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-22 06:33:37  

Additional Information
 Earth MOID = .000927879 au 
 Jupiter MOID = 3.95171 au 
 T_jup = 6.004 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458964.5 (2020-Apr-25.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02321105170547887 3.2089e-06  
q .9883615713920787 1.5313e-05 au
tp 2458824.405237140283
(2019-Dec-06.90523714)
0.013988 TDB
node 39.9681020078912 0.00023954 deg
peri 37.9884073548647 0.0094886 deg
i 4.8974546805207 0.0053024 deg
  Orbit Determination Parameters
   # obs. used (total)      28  
   data-arc span      12 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .6358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-22 06:33:37  

Additional Information
 Jupiter MOID = 3.95171 au 
 T_jup = 6.004 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.02971779215524E-11 4.90054549247543E-11 -4.425855594129054E-8 7.668102240671441E-10 -2.969500665083173E-8 1.698313211275676E-8
q 4.90054549247543E-11 2.344952575432204E-10 -2.116268452285177E-7 3.664672390486875E-9 -1.419871798962211E-7 8.115689488081661E-8
tp -4.425855594129054E-8 -2.116268452285177E-7 .000195664368548865 -3.315290717426671E-6 .0001324971436537387 -7.355159139121135E-5
node 7.668102240671441E-10 3.664672390486875E-9 -3.315290717426671E-6 5.737724818743211E-8 -2.226371474029042E-6 1.269132275948801E-6
peri -2.969500665083173E-8 -1.419871798962211E-7 .0001324971436537387 -2.226371474029042E-6 9.003423280015498E-5 -4.942581785653711E-5
i 1.698313211275676E-8 8.115689488081661E-8 -7.355159139121135E-5 1.269132275948801E-6 -4.942581785653711E-5 2.811588149883451E-5

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 27.4   .64374 E2020-QF4 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-Mar-05 23:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin