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46957 (1998 SD129)
Classification: Main-belt Asteroid          SPK-ID: 2046957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1764525707280991 4.0869e-08  
a 2.606969354068249 9.791e-09 au
q 2.146962909733535 1.0567e-07 au
i 13.42579870555856 4.9367e-06 deg
node 188.3375282667981 1.5451e-05 deg
peri 61.58850305874835 1.9312e-05 deg
M 163.931387579391 1.1622e-05 deg
tp 2458300.397014120362
(2018-Jun-30.89701412)
4.894e-05 TDB
period 1537.454654890966
4.21
8.6613e-06
2.371e-08
d
yr
n .2341532472874985 1.3191e-09 deg/d
Q 3.066975798402963 1.1519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1487  
   data-arc span      13087 days (35.83 yr)  
   first obs. used      1984-03-29  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:38:16  

Additional Information
 Earth MOID = 1.17081 au 
 Jupiter MOID = 2.03378 au 
 T_jup = 3.351 
[ 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 14.4   n/a MPO347849  
diameter diameter 3.166 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.485   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46957 (1998 SD129)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SD129 = 2001 BA50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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