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66657 (1999 SM19)
Classification: Main-belt Asteroid          SPK-ID: 2066657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2051431192602681 5.9822e-08  
a 2.554869093228531 1.3977e-08 au
q 2.030755278141978 1.4591e-07 au
i 15.29214588241423 4.8336e-06 deg
node 18.90436861505978 2.0316e-05 deg
peri 338.2075276140561 2.523e-05 deg
M 71.25132853074031 2.029e-05 deg
tp 2458905.282654096713
(2020-Feb-25.78265410)
8.2365e-05 TDB
period 1491.596672184591
4.08
1.224e-05
3.351e-08
d
yr
n .2413521072507787 1.9806e-09 deg/d
Q 3.078982908315085 1.6845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      10730 days (29.38 yr)  
   first obs. used      1991-10-03  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:02  

Additional Information
 Earth MOID = 1.03404 au 
 Jupiter MOID = 2.39346 au 
 T_jup = 3.360 
[ 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 15.37   n/a E2021B10  

66657 (1999 SM19)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 SM19 = 1991 TF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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