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439877 (1999 XM141)
Classification: Apollo [NEO, PHA]          SPK-ID: 2439877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .369292225322072 1.1993e-07  
a 1.236407282652964 3.5355e-09 au
q .7798116858376347 1.4754e-07 au
i 21.62000974553595 2.4019e-05 deg
node 73.02115327452026 2.0311e-05 deg
peri 105.7165675259398 2.984e-05 deg
M 53.92237683175687 2.5517e-05 deg
tp 2459125.284510726313
(2020-Oct-02.78451073)
3.538e-05 TDB
period 502.1584308683574
1.37
2.1539e-06
5.897e-09
d
yr
n .716905219289996 3.0749e-09 deg/d
Q 1.693002879468293 4.8411e-09 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      5708 days (15.63 yr)  
   first obs. used      1999-12-13  
   last obs. used      2015-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49093  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:35:17  

Additional Information
 Earth MOID = .0345125 au 
 Jupiter MOID = 3.39871 au 
 T_jup = 5.051 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.5   n/a MPO189190  

439877 (1999 XM141)          Discovered 1999-Dec-13 by LINEAR at Socorro
Reference: Last Updated: 2015-09-02

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