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102931 (1999 XE41)
Classification: Main-belt Asteroid          SPK-ID: 2102931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2400292714863364 4.1824e-08  
a 2.380030303400492 8.0557e-09 au
q 1.808753363559868 1.0148e-07 au
i 1.984004241341459 4.412e-06 deg
node 338.1716343042939 9.802e-05 deg
peri 354.2341274025589 9.8264e-05 deg
M 318.3088951721693 8.1011e-06 deg
tp 2459355.814878171556
(2021-May-21.31487817)
3.0623e-05 TDB
period 1341.133951058921
3.67
6.809e-06
1.864e-08
d
yr
n .2684295626963693 1.3628e-09 deg/d
Q 2.951307243241116 9.9893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:18  

Additional Information
 Earth MOID = .796461 au 
 Jupiter MOID = 2.42107 au 
 T_jup = 3.499 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.89   n/a E2021B55  
diameter diameter 1.495 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.415   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

102931 (1999 XE41)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XE41 = 2002 JX58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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