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46921 (1998 SW13)
Classification: Main-belt Asteroid          SPK-ID: 2046921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2359659594735004 4.0609e-08  
a 2.856653805334702 1.8672e-08 au
q 2.182580749275273 1.1535e-07 au
i 15.95503649222153 4.7707e-06 deg
node 149.6385242500513 1.5008e-05 deg
peri 156.0426276671692 1.952e-05 deg
M 245.3666740566845 1.7798e-05 deg
tp 2459762.056213617301
(2022-Jul-01.55621362)
9.1119e-05 TDB
period 1763.538091900025
4.83
1.7291e-05
4.734e-08
d
yr
n .2041350859692167 2.0015e-09 deg/d
Q 3.530726861394131 2.3078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      8303 days (22.73 yr)  
   first obs. used      1998-06-30  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:50  

Additional Information
 Earth MOID = 1.17554 au 
 Jupiter MOID = 1.84201 au 
 T_jup = 3.206 
[ 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 14.39   n/a MPCxxxxx  

46921 (1998 SW13)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SW13 = 1998 QU39 = 2001 DK60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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