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JPL Small-Body Database Browser
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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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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.


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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458907.5 (2020-Feb-28.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4339504085353157 0.00021683  
q .9206806544841419 3.0971e-05 au
tp 2458944.572385576353
(2020-Apr-05.07238558)
0.0018242 TDB
node 188.5756022492533 0.0013189 deg
peri 15.87096124720675 0.0012103 deg
i .746676602664435 0.00030101 deg
  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
 Jupiter MOID = 2.6464 au 
 T_jup = 4.225 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.701683591051514E-8 -6.715352974917726E-9 -3.95417487514738E-7 2.284769396244908E-7 1.88805803464437E-7 6.514543277502736E-8
q -6.715352974917726E-9 9.592015691657142E-10 5.646612678127622E-8 -3.249978956059848E-8 -2.711578489920539E-8 -9.307745449905416E-9
tp -3.95417487514738E-7 5.646612678127622E-8 3.327607387517533E-6 -1.946951911391035E-6 -1.559431423239571E-6 -5.472850452600259E-7
node 2.284769396244908E-7 -3.249978956059848E-8 -1.946951911391035E-6 1.739442657146964E-6 2.517544091049129E-7 3.019155166700495E-7
peri 1.88805803464437E-7 -2.711578489920539E-8 -1.559431423239571E-6 2.517544091049129E-7 1.464850771681208E-6 2.771181552109487E-7
i 6.514543277502736E-8 -9.307745449905416E-9 -5.472850452600259E-7 3.019155166700495E-7 2.771181552109487E-7 9.060709790366417E-8

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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