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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2358650715360731 4.1829e-08  
a 2.85714046209026 1.9414e-08 au
q 2.183240822610732 1.1796e-07 au
i 15.95337778520789 4.8319e-06 deg
node 149.6382674363362 1.5499e-05 deg
peri 155.9987461468951 1.9926e-05 deg
M 204.6015391985873 1.7814e-05 deg
tp 2459761.947607352213
(2022-Jul-01.44760735)
9.2856e-05 TDB
period 1763.988763036094
4.83
1.7979e-05
4.922e-08
d
yr
n .2040829326941885 2.0801e-09 deg/d
Q 3.531040101569788 2.3993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      7966 days (21.81 yr)  
   first obs. used      1998-06-30  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:35:56  

Additional Information
 Earth MOID = 1.17819 au 
 Jupiter MOID = 1.84169 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 14.3   n/a MPO426241  

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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