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JPL Small-Body Database Browser
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(2015 DJ155)
Classification: Apollo [NEO]          SPK-ID: 3711778
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4827015165729554 1.6989e-07  
a 1.841963983259224 6.3637e-09 au
q .9528451750672348 3.1232e-07 au
i 4.462016137284436 1.2408e-05 deg
node 328.3518069946891 3.3952e-05 deg
peri 126.7679585939223 7.5928e-05 deg
M 58.54489797913097 2.015e-05 deg
tp 2458852.006760915905
(2020-Jan-03.50676092)
5.1105e-05 TDB
period 913.1037531114977
2.50
4.7319e-06
1.296e-08
d
yr
n .3942596871092271 2.0432e-09 deg/d
Q 2.731082791451213 9.4355e-09 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      1834 days (5.02 yr)  
   first obs. used      2015-02-19  
   last obs. used      2020-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54212  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-28 05:45:25  

Additional Information
 Earth MOID = .0326331 au 
 Jupiter MOID = 2.48948 au 
 T_jup = 3.864 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457935.5 (2017-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4812621328042804 1.6874e-07  
q .9544055529847622 3.1088e-07 au
tp 2457940.376806713238
(2017-Jul-05.87680671)
5.1959e-05 TDB
node 328.543058070505 3.4171e-05 deg
peri 126.4970956943537 7.66e-05 deg
i 4.445673685513323 1.2425e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      1834 days (5.02 yr)  
   first obs. used      2015-02-19  
   last obs. used      2020-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54212  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-28 05:45:25  

Additional Information
 Jupiter MOID = 2.48948 au 
 T_jup = 3.864 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.847313254188777E-14 -5.245710056447247E-14 -8.387610309766578E-12 -1.032030942637993E-12 -1.116249708815221E-11 -7.460771624533415E-13
q -5.245710056447247E-14 9.664616324169283E-14 1.544514920134656E-11 1.902236215913422E-12 2.055863085785512E-11 1.377215531291701E-12
tp -8.387610309766578E-12 1.544514920134656E-11 2.699763252030163E-9 2.714790587516359E-10 3.577305276606204E-9 1.325478963074774E-10
node -1.032030942637993E-12 1.902236215913422E-12 2.714790587516359E-10 1.167645782664143E-9 -7.593002878857277E-10 -2.163348469513358E-10
peri -1.116249708815221E-11 2.055863085785512E-11 3.577305276606204E-9 -7.593002878857277E-10 5.867624802486265E-9 4.345099955475643E-10
i -7.460771624533415E-13 1.377215531291701E-12 1.325478963074774E-10 -2.163348469513358E-10 4.345099955475643E-10 1.543895255310319E-10

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 23.9   n/a MPO349336  

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