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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762357896559458 3.7446e-08  
a 2.607447529299095 9.4744e-09 au
q 2.147921954986624 9.7577e-08 au
i 13.42483635435024 4.3051e-06 deg
node 188.3286574835975 1.5287e-05 deg
peri 61.610842921287 1.8396e-05 deg
M 210.7335413402392 1.1136e-05 deg
tp 2459838.148763684277
(2022-Sep-15.64876368)
4.8867e-05 TDB
period 1537.877678531826
4.21
8.382e-06
2.295e-08
d
yr
n .2340888388104333 1.2759e-09 deg/d
Q 3.066973103611565 1.1144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1567  
   data-arc span      13469 days (36.88 yr)  
   first obs. used      1984-03-29  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:54:12  

Additional Information
 Earth MOID = 1.17043 au 
 Jupiter MOID = 2.03264 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 14.41   n/a MPCxxxxx  
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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