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JPL Small-Body Database Browser
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(2013 UM9)
Classification: Apollo [NEO]          SPK-ID: 3653322
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2463274871759655 9.3809e-07  
a 1.21523554015251 1.1079e-08 au
q .9158896232198153 1.1412e-06 au
i 2.962846420867265 1.5112e-05 deg
node 38.61269452240836 3.2731e-05 deg
peri 283.9213615122098 0.00025518 deg
M 87.85528184357835 0.00010751 deg
tp 2458481.086206329219
(2018-Dec-28.58620633)
0.00014558 TDB
period 489.3156657105804
1.34
6.6917e-06
1.832e-08
d
yr
n .7357213864739254 1.0061e-08 deg/d
Q 1.514581457085205 1.3809e-08 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      1477 days (4.04 yr)  
   first obs. used      2013-10-30  
   last obs. used      2017-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46483  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Nov-16 07:18:59  

Additional Information
 Earth MOID = .0184498 au 
 Jupiter MOID = 3.77126 au 
 T_jup = 5.217 
[ 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 24.6   n/a MPO428320  

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