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JPL Small-Body Database Browser
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13340 (1998 SM123)
Classification: Main-belt Asteroid          SPK-ID: 2013340
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .240115105580652 4.1825e-08  
a 2.557995694243176 9.6821e-09 au
q 1.943782288045123 1.0895e-07 au
i 5.566687744099513 3.5693e-06 deg
node 21.68706559943504 4.6162e-05 deg
peri 253.7544242766252 4.6986e-05 deg
M 180.2778897056297 8.7896e-06 deg
tp 2459746.514294615036
(2022-Jun-16.01429462)
3.6789e-05 TDB
period 1494.335591884187
4.09
8.4842e-06
2.323e-08
d
yr
n .2409097407270351 1.3678e-09 deg/d
Q 3.17220910044123 1.2007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2171  
   data-arc span      9749 days (26.69 yr)  
   first obs. used      1993-04-26  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:05:45  

Additional Information
 Earth MOID = .936611 au 
 Jupiter MOID = 1.99358 au 
 T_jup = 3.389 
[ 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 14.3   n/a MPO358759  
diameter diameter 8.914 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13340 (1998 SM123)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 SM123 = 1993 HF6 = 1997 EG58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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