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 HD)
Classification: Amor [NEO]          SPK-ID: 54016543
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 2458957.5 (2020-Apr-18.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5347849025045711 0.001541  
a 2.357931099923868 0.0082955 au
q 1.096945146538586 0.00022581 au
i 4.251083081330708 0.0094792 deg
node 355.9263243457356 0.006482 deg
peri 222.2230261359049 0.010137 deg
M 356.8336264954905 0.015231 deg
tp 2458969.132009141549
(2020-Apr-29.63200914)
0.0058482 TDB
period 1322.498209700713
3.62
6.9791
0.01911
d
yr
n .272212088726736 0.0014365 deg/d
Q 3.61891705330915 0.012732 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      10 days  
   first obs. used      2020-04-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .53973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:24:59  

Additional Information
 Earth MOID = .103789 au 
 Jupiter MOID = 1.38756 au 
 T_jup = 3.341 
[ 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 24.5   .4662 E2020-HH2 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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-30 06:11 00:10 Earth 0.107037081814515 0.106241427688725 0.107832720589037 5.94160954249504 5.93741845057049 2458969.757756225 10.3819660803207 39624.1109116801 467.853956159369 -0.848089255656184 346.731768902082 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 22:24:59 2021-Apr-15 22:25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-18 15:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin