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102998 (1999 XJ94)
Classification: Main-belt Asteroid          SPK-ID: 2102998
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1854051290144602 3.246e-08  
a 2.636542821722381 1.6276e-08 au
q 2.147714259708794 8.0439e-08 au
i 13.90193374532298 4.2398e-06 deg
node 107.2165890321314 1.4326e-05 deg
peri 273.0127754718027 2.03e-05 deg
M 37.32350492840135 1.1742e-05 deg
tp 2459038.382241526997
(2020-Jul-07.88224153)
5.1383e-05 TDB
period 1563.690043639766
4.28
1.4479e-05
3.964e-08
d
yr
n .2302246544731053 2.1318e-09 deg/d
Q 3.125371383735968 1.9294e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      7714 days (21.12 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:00  

Additional Information
 Earth MOID = 1.20238 au 
 Jupiter MOID = 2.48565 au 
 T_jup = 3.332 
[ 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 14.8   n/a MPO436483  
diameter diameter 3.285 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.198   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102998 (1999 XJ94)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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