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(2018 LD1)
Classification: Apollo [NEO]          SPK-ID: 3825101
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5088936814605999 0.00032562  
a 1.845896028270469 0.0011324 au
q .9065312028504104 4.4939e-05 au
i .2264045536485166 0.00030154 deg
node 31.56764640205325 0.056321 deg
peri 279.005336431851 0.056523 deg
M 267.1424348589234 0.24373 deg
tp 2459236.778426928542
(2021-Jan-22.27842693)
0.83759 TDB
period 916.0291201373306
2.51
0.84291
0.002308
d
yr
n .3930006067340185 0.00036163 deg/d
Q 2.785260853690528 0.0017086 au
  Orbit Determination Parameters
   # obs. used (total)      49  
   data-arc span      8 days  
   first obs. used      2018-06-05  
   last obs. used      2018-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .59637  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-18 07:28:23  

Additional Information
 Earth MOID = .00235093 au 
 Jupiter MOID = 2.51716 au 
 T_jup = 3.844 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458280.5 (2018-Jun-11.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5123774233105096 0.0003219  
q .9088090329466114 4.6687e-05 au
tp 2458320.198931299802
(2018-Jul-20.69893130)
0.0048948 TDB
node 52.73663212895995 0.0010117 deg
peri 257.3507233481151 0.00096254 deg
i .3482858251899554 0.00019993 deg
  Orbit Determination Parameters
   # obs. used (total)      49  
   data-arc span      8 days  
   first obs. used      2018-06-05  
   last obs. used      2018-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .59637  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-18 07:28:23  

Additional Information
 Jupiter MOID = 2.51716 au 
 T_jup = 3.844 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.036186449087301E-7 -1.502814209514907E-8 -1.575614543727379E-6 1.408701956293348E-7 5.496662284990339E-8 6.4235131380353E-8
q -1.502814209514907E-8 2.179663896585748E-9 2.285089356303178E-7 -2.023944155456152E-8 -8.177656679551376E-9 -9.31337963087747E-9
tp -1.575614543727379E-6 2.285089356303178E-7 2.395935833298596E-5 -2.158164264481971E-6 -8.183860666390713E-7 -9.769884761597439E-7
node 1.408701956293348E-7 -2.023944155456152E-8 -2.158164264481971E-6 1.023583412158245E-6 -7.887305312871659E-7 9.850802301388044E-8
peri 5.496662284990339E-8 -8.177656679551376E-9 -8.183860666390713E-7 -7.887305312871659E-7 9.264759587191376E-7 2.243189597062037E-8
i 6.4235131380353E-8 -9.31337963087747E-9 -9.769884761597439E-7 9.850802301388044E-8 2.243189597062037E-8 3.997384858151394E-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 26.2   n/a E2018L73  

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