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(2018 UL1)
Classification: Apollo [NEO]          SPK-ID: 3831896
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 2458410.5 (2018-Oct-19.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1986395514562506 0.0015008  
a 1.263212354068501 0.0025322 au
q 1.01228841866234 0.00013863 au
i 25.57683312212212 0.08594 deg
node 204.3880975511382 0.0028755 deg
peri 143.6720797228056 0.097947 deg
M 25.55311347703411 0.15189 deg
tp 2458373.690976502581
(2018-Sep-12.19097650)
0.10841 TDB
period 518.5766685918885
1.42
1.5593
0.004269
d
yr
n .6942078612551584 0.0020874 deg/d
Q 1.514136289474663 0.0030352 au
  Orbit Determination Parameters
   # obs. used (total)      26  
   data-arc span      2 days  
   first obs. used      2018-10-18  
   last obs. used      2018-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .40727  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-20 16:12:04  

Additional Information
 Earth MOID = .0478457 au 
 Jupiter MOID = 3.89962 au 
 T_jup = 4.990 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 2.252511238605014E-6 1.995066459500878E-7 .0001614594976410202 4.311079403369156E-6 .0001451791113885673 .0001288180078883499
q 1.995066459500878E-7 1.92190246643142E-8 1.482674616529447E-5 3.869425233329127E-7 1.34632196758658E-5 1.157886942792588E-5
tp .0001614594976410202 1.482674616529447E-5 .01175257075113062 .0003107418686968264 .01061223864963057 .009290855511327075
node 4.311079403369156E-6 3.869425233329127E-7 .0003107418686968264 8.268366826497671E-6 .0002798414953470428 .0002471152799426601
peri .0001451791113885673 1.34632196758658E-5 .01061223864963057 .0002798414953470428 .009593549311086818 .008368385127920095
i .0001288180078883499 1.157886942792588E-5 .009290855511327075 .0002471152799426601 .008368385127920095 .007385766313507675

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 25.0   .34076 MPO458820 autocmod 2.6n

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