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172491 (2003 SF142)
Classification: Main-belt Asteroid          SPK-ID: 2172491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1826558189569505 4.3801e-08  
a 2.288699014270585 1.2966e-08 au
q 1.870654821473026 1.0017e-07 au
i 6.99639672284674 5.5591e-06 deg
node 258.2712375430297 5.3599e-05 deg
peri 38.10011918964294 5.815e-05 deg
M 338.5242909892296 2.4765e-05 deg
tp 2459075.944304756226
(2020-Aug-14.44430476)
8.7367e-05 TDB
period 1264.682330097697
3.46
1.0747e-05
2.942e-08
d
yr
n .2846564638664557 2.4189e-09 deg/d
Q 2.706743207068143 1.5334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      7214 days (19.75 yr)  
   first obs. used      1999-05-13  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:50:04  

Additional Information
 Earth MOID = .860352 au 
 Jupiter MOID = 2.49106 au 
 T_jup = 3.568 
[ 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 16.5   n/a MPO436858  
diameter diameter 1.367 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.313   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172491 (2003 SF142)          Discovered 2003-Sep-20 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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