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46955 (1998 SS121)
Classification: Main-belt Asteroid          SPK-ID: 2046955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056667163800483 5.2935e-08  
a 2.724131812639115 1.8866e-08 au
q 2.436281749011111 1.4111e-07 au
i 4.219973515852103 5.6383e-06 deg
node 245.0073306255755 8.7237e-05 deg
peri 175.2376249819153 9.2869e-05 deg
M 174.8805242740718 3.0966e-05 deg
tp 2457802.726603651311
(2017-Feb-18.22660365)
0.00014075 TDB
period 1642.255041707402
4.50
1.706e-05
4.671e-08
d
yr
n .2192107747318705 2.2772e-09 deg/d
Q 3.01198187626712 2.086e-08 au
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      7506 days (20.55 yr)  
   first obs. used      1998-09-26  
   last obs. used      2019-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59397  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:40:02  

Additional Information
 Earth MOID = 1.44858 au 
 Jupiter MOID = 2.27875 au 
 T_jup = 3.345 
[ 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 15.0   n/a MPO279981  
diameter diameter 5.337 km 1.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46955 (1998 SS121)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SS121 = 2000 CA46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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