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120913 (1998 SE78)
Classification: Main-belt Asteroid          SPK-ID: 2120913
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091314097041062 3.6966e-08  
a 2.202671760512751 9.7093e-09 au
q 1.962291086172569 7.8859e-08 au
i 2.866616392979994 3.8837e-06 deg
node 248.2692217114162 8.3969e-05 deg
peri 183.090994813639 8.6504e-05 deg
M 228.7611960071754 2.3115e-05 deg
tp 2459635.794185365713
(2022-Feb-25.29418537)		 7.8195e-05 TDB
period 1194.051621654708
3.27		 7.895e-06
2.162e-08		 d
yr
n .3014945028097819 1.9935e-09 deg/d
Q 2.443052434852933 1.0769e-08 au
   Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      8916 days (24.41 yr)  
   first obs. used      1996-01-24  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52454  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:49  

Additional Information
 Earth MOID = .976264 au 
 Jupiter MOID = 2.77522 au 
 T_jup = 3.654 
[ 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 16.57   n/a E2021B55  

120913 (1998 SE78)          Discovered 1998-Sep-26 by LINEAR at Socorro
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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