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JPL Small-Body Database Browser
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46939 (1998 SM73)
Classification: Main-belt Asteroid          SPK-ID: 2046939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1226243314184186 3.646e-08  
a 2.723533991342478 1.5693e-08 au
q 2.38956245655877 9.8531e-08 au
i 5.393207026926754 5.0226e-06 deg
node 164.7248090494901 4.1078e-05 deg
peri 302.2895344562568 4.5643e-05 deg
M 221.8694748173497 2.0083e-05 deg
tp 2459630.419117464356
(2022-Feb-19.91911746)
9.2412e-05 TDB
period 1641.714472505686
4.49
1.4189e-05
3.885e-08
d
yr
n .2192829545143413 1.8953e-09 deg/d
Q 3.057505526126187 1.7617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      10483 days (28.70 yr)  
   first obs. used      1989-09-29  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5535  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:39:58  

Additional Information
 Earth MOID = 1.41149 au 
 Jupiter MOID = 2.06537 au 
 T_jup = 3.340 
[ 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 14.7   n/a MPO302329  

46939 (1998 SM73)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SM73 = 1989 TH4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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