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120715 (1997 SG4)
Classification: Main-belt Asteroid          SPK-ID: 2120715
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722318643961752 4.3688e-08  
a 2.389113970965904 8.8506e-09 au
q 1.977632417491497 1.0631e-07 au
i 5.774320821696336 4.6421e-06 deg
node 205.6052380440391 3.7216e-05 deg
peri 141.7667477344744 3.8968e-05 deg
M 120.0154347194655 1.0215e-05 deg
tp 2458750.835781371001
(2019-Sep-24.33578137)
3.8395e-05 TDB
period 1348.819167174873
3.69
7.4951e-06
2.052e-08
d
yr
n .2669001217961832 1.4831e-09 deg/d
Q 2.800595524440311 1.0375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      8513 days (23.31 yr)  
   first obs. used      1997-09-27  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51185  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:44  

Additional Information
 Earth MOID = .973424 au 
 Jupiter MOID = 2.64136 au 
 T_jup = 3.506 
[ 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 MPO449701  

120715 (1997 SG4)          Discovered 1997-Sep-27 by Kobayashi, T. at Oizumi
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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