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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356128050181022 4.1836e-08  
a 2.857589170110166 1.9652e-08 au
q 2.184304570151159 1.1806e-07 au
i 15.94928433559814 5.0576e-06 deg
node 149.6487712034867 1.8445e-05 deg
peri 155.9449648791372 2.2858e-05 deg
M 123.0536597311954 1.7711e-05 deg
tp 2457997.398862487798
(2017-Aug-31.89886249)
8.3182e-05 TDB
period 1764.404325549299
4.83
1.8201e-05
4.983e-08
d
yr
n .2040348659244665 2.1047e-09 deg/d
Q 3.530873770069173 2.4282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      743  
   data-arc span      7509 days (20.56 yr)  
   first obs. used      1998-06-30  
   last obs. used      2019-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59814  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:39:52  

Additional Information
 Earth MOID = 1.17845 au 
 Jupiter MOID = 1.839 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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