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JPL Small-Body Database Browser
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386454 (2008 XM)
Classification: Apollo [NEO, PHA]          SPK-ID: 2386454
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9091727660782803 4.027e-08  
a 1.222268286147342 1.6793e-08 au
q .111015247541004 5.0074e-08 au
i 5.446658392597568 1.8871e-05 deg
node 240.625766055985 9.965e-05 deg
peri 27.37425470391064 9.8367e-05 deg
M 214.0306541473562 5.8658e-05 deg
tp 2459200.627791593274
(2020-Dec-17.12779159)
8.4528e-05 TDB
period 493.569417282373
1.35
1.0172e-05
2.785e-08
d
yr
n .7293806856635986 1.5031e-08 deg/d
Q 2.333521324753679 3.206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      1884 days (5.16 yr)  
   first obs. used      2008-12-02  
   last obs. used      2014-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58085  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:22:09  

Additional Information
 Earth MOID = .00473389 au 
 Jupiter MOID = 2.79365 au 
 T_jup = 4.659 
[ 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 20.0   n/a MPO282312  
diameter diameter 0.367 km 0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)  
geometric albedo albedo 0.128   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)  

386454 (2008 XM)          Discovered 2008-Dec-02 by LINEAR at Socorro
Reference: Last Updated: 2014-02-19

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