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109899 (2001 SG20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2109899
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2273281124477542 4.72e-08  
a 3.217511661703663 2.3155e-08 au
q 2.486080808869932 1.6031e-07 au
i 1.612727742148745 4.686e-06 deg
node 45.45889506244689 0.00020287 deg
peri 315.7720815770381 0.00020319 deg
M 83.0670364564683 1.2416e-05 deg
tp 2458514.087376632139
(2019-Jan-30.58737663)
7.034e-05 TDB
period 2108.038903063507
5.77
2.2756e-05
6.23e-08
d
yr
n .1707748369713813 1.8435e-09 deg/d
Q 3.948942514537393 2.8418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      8905 days (24.38 yr)  
   first obs. used      1995-08-19  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:54:06  

Additional Information
 Earth MOID = 1.48358 au 
 Jupiter MOID = 1.50648 au 
 T_jup = 3.148 
[ 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 15.1   n/a MPO412774  

109899 (2001 SG20)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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