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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 
[ 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 25.0   .34076 MPO458820 autocmod 2.6n

[ 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-May-18 15:23 20:10 Earth 0.419083882744753 0.409690949023382 0.42849370384885 13.2338351962052 13.2333547623993 2458257.141053987 1209.88933290354 487261.554613455 23164.5349295137 15.8355721347534 694.876053564655 T 1 CATAB v2.0e-lin.ifort 2018-Oct-20 16:12:06 2018-Dec-11 17:24
2018-Oct-16 01:22 00:03 Earth 0.0505455486045078 0.0500017317444075 0.0510893595090224 14.001129281779 13.9973637633213 2458407.557087647 3.39331602495417 27103.9913266126 630.964718141318 0.522537660585151 210.80131592541 T 1 CATAB v2.0e-lin.ifort 2018-Oct-20 16:12:06 2018-Dec-11 17:24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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