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(2021 LY4)
Classification: Apollo [NEO]          SPK-ID: 54158251
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5666458970783317 0.00039643  
a 2.159209484278217 0.0018914 au
q .9357022890793449 3.6335e-05 au
i 1.557688718857356 0.00060987 deg
node 92.57583959235305 0.0015042 deg
peri 211.7551630316941 0.0011781 deg
M 355.1565428066728 0.0077988 deg
tp 2459412.091703257131
(2021-Jul-16.59170326)
0.004619 TDB
period 1158.88567783779
3.17
1.5227
0.004169
d
yr
n .3106432384872302 0.00040817 deg/d
Q 3.38271667947709 0.0029631 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      4 days  
   first obs. used      2021-06-11  
   last obs. used      2021-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .46215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-17 06:21:31  

Additional Information
 Earth MOID = .0032025 au 
 Jupiter MOID = 1.89773 au 
 T_jup = 3.471 
[ 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 26.08   .38996 E2021N14 autocmod 2.9c

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