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(2020 DP4)
Classification: Apollo [NEO]          SPK-ID: 54006021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2810084216665019 0.00015476  
a 1.219549894760959 0.00019433 au
q .8768461036906332 4.9024e-05 au
i 1.448513218730328 0.00067271 deg
node 2.497115159540165 0.00082329 deg
peri 243.9079304768287 0.0010946 deg
M 159.5160133009602 0.033951 deg
tp 2458982.528570344957
(2020-May-13.02857035)
0.0057072 TDB
period 491.923745158838
1.35
0.11758
0.0003219
d
yr
n .7318207416146562 0.00017492 deg/d
Q 1.562253685831284 0.00024894 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      23 days  
   first obs. used      2020-02-27  
   last obs. used      2020-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .39354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:20:10  

Additional Information
 Earth MOID = .000276931 au 
 Jupiter MOID = 3.45961 au 
 T_jup = 5.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458919.5 (2020-Mar-11.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2837183953851231 0.00015255  
q .8794274289737731 5.1906e-05 au
tp 2458981.882458776062
(2020-May-12.38245878)
0.0046709 TDB
node 2.595526161210377 0.00020879 deg
peri 242.9112512192744 0.00087147 deg
i 1.449864244172565 0.00065804 deg
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      23 days  
   first obs. used      2020-02-27  
   last obs. used      2020-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .39354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:20:10  

Additional Information
 Jupiter MOID = 3.45961 au 
 T_jup = 5.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.327108222246714E-8 -7.917925914922472E-9 -7.124505738245971E-7 3.125444939172256E-8 1.314085629675761E-7 1.003727372501338E-7
q -7.917925914922472E-9 2.69426001336616E-9 2.423768377797982E-7 -1.062900797087834E-8 -4.476878275589107E-8 -3.415208275389307E-8
tp -7.124505738245971E-7 2.423768377797982E-7 2.181713499735898E-5 -9.576226637292271E-7 -4.013991296322175E-6 -3.072854158755648E-6
node 3.125444939172256E-8 -1.062900797087834E-8 -9.576226637292271E-7 4.359406459156941E-8 1.736249267350203E-7 1.345223082869535E-7
peri 1.314085629675761E-7 -4.476878275589107E-8 -4.013991296322175E-6 1.736249267350203E-7 7.594529654310494E-7 5.672089132134794E-7
i 1.003727372501338E-7 -3.415208275389307E-8 -3.072854158755648E-6 1.345223082869535E-7 5.672089132134794E-7 4.330174728326365E-7

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 25.2   .4275 E2020G29 autocmod 2.8
rotation period rot_per 0.30304 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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