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JPL Small-Body Database Browser
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109985 (2001 SG57)
Classification: Main-belt Asteroid          SPK-ID: 2109985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179548251444465 4.0002e-08  
a 2.785859067334022 1.4382e-08 au
q 2.28566294302349 1.1416e-07 au
i 8.563801507743028 4.9692e-06 deg
node 165.4130828374641 2.6853e-05 deg
peri 253.0235590949809 2.986e-05 deg
M 256.4215297257479 1.3125e-05 deg
tp 2459089.157008868709
(2020-Aug-27.65700887)
6.3423e-05 TDB
period 1698.388890345152
4.65
1.3152e-05
3.601e-08
d
yr
n .2119655881208924 1.6414e-09 deg/d
Q 3.286055191644554 1.6964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7984 days (21.86 yr)  
   first obs. used      1998-01-26  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55692  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:08:47  

Additional Information
 Earth MOID = 1.31455 au 
 Jupiter MOID = 2.13746 au 
 T_jup = 3.291 
[ 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 15.5   n/a MPO449654  

109985 (2001 SG57)          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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