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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 
[ 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 26.2   n/a E2018L73  

[ 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-Jun-14 16:00 < 00:01 Earth 0.00401942565325871 0.0040126701851128 0.00402618087801099 10.963402268616 10.9027697523359 2458284.166345141 0.067495334476861 333.210721508797 0.627958640134747 -0.294436055301857 1184.80170837804 T 9 CATAB v2.0e-lin.ifort 2019-Jul-18 07:28:34 2019-Jul-18 07:29
2018-Jun-14 21:36 < 00:01 Moon 0.00512348788563112 0.00511707079488214 0.00512990558909117 11.7210369844446 11.7204912301874 2458284.400344338 0.493119137264101 331.982928935256 1.17366308153362 -15.4581329369493 174023.778421335 T 9 CATAB v2.0e-lin.ifort 2019-Jul-18 07:28:34 2019-Jul-18 07:29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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