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(2020 DA4)
Classification: Apollo [NEO]          SPK-ID: 54005703
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4309924571038903 0.00021933  
a 1.616507744776854 0.00057012 au
q .9198050999280094 3.0147e-05 au
i .868710241509711 0.00018267 deg
node 184.914945110035 0.0052073 deg
peri 19.85636459107909 0.0037439 deg
M 26.69647317100225 0.013068 deg
tp 2458944.830604963888
(2020-Apr-05.33060496)
0.0022 TDB
period 750.6977451526719
2.06
0.39714
0.001087
d
yr
n .4795538581600316 0.0002537 deg/d
Q 2.313210389625699 0.00081583 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      6 days  
   first obs. used      2020-02-27  
   last obs. used      2020-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .36105  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-04 05:53:00  

Additional Information
 Earth MOID = .00532275 au 
 Jupiter MOID = 2.6464 au 
 T_jup = 4.225 
[ 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 25.7   .42167 3 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
2018-Jan-31 16:00 1_00:23 Earth 0.456763174761458 0.436286562170592 0.477240629479543 22.7828899492401 22.782633905064 2458150.166923583 1463.11998782014 1021575.13147856 8.27831295800133 1.75878418712219 221824.359178819 T 3 CATAB v2.0f-lin.ifort 2020-Mar-04 05:53:02 2020-Mar-04 05:53
2020-Mar-03 19:45 < 00:01 Moon 0.00753559812648741 0.00752745081598233 0.00754374586977935 9.78706566855725 9.78662128457224 2458912.322788273 0.41257108365373 416.145402589095 1.68303414616676 -12.5248295768645 135913.021154188 T 3 CATAB v2.0f-lin.ifort 2020-Mar-04 05:53:02 2020-Mar-04 05:53
2020-Mar-04 02:05 < 00:01 Earth 0.0062899231745883 0.0062814795045459 0.00629836660821261 9.0466906367078 8.99974387926033 2458912.586866355 0.037995796157076 416.608659060656 1.78322640823933 0.111560069889881 1383.33685656095 T 3 CATAB v2.0f-lin.ifort 2020-Mar-04 05:53:02 2020-Mar-04 05:53
2022-Jun-01 12:43 3_02:34 Earth 0.0140426883936299 0.0139826242560674 0.0230285046368984 8.92709309414414 8.90581317534052 2459732.029881645 4473.64825295176 849026.44799593 59.6498788530032 84.7447056639479 34394.1743775824 T 3 CATAB v2.0f-lin.ifort 2020-Mar-04 05:53:02 2020-Mar-04 05:53
2024-Jun-28 23:37 7_07:05 Earth 0.340364993307388 0.210362763958297 0.470566015528236 19.0749321922602 19.0745217905711 2460490.484345922 10504.5166152912 6500598.12631374 41.7073771080964 -3.3649252117452 62991.912765536 T 3 CATAB v2.0f-lin.ifort 2020-Mar-04 05:53:02 2020-Mar-04 05:53
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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