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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096241795421743 3.7709e-08  
a 2.201781479137525 1.0089e-08 au
q 1.960412990955918 8.1105e-08 au
i 2.867978995829627 3.995e-06 deg
node 248.2824012068515 0.0001022 deg
peri 183.0884005421651 0.00010498 deg
M 168.4494895804114 2.4908e-05 deg
tp 2458442.123738315926
(2018-Nov-19.62373832)		 8.1399e-05 TDB
period 1193.327772657389
3.27		 8.202e-06
2.246e-08		 d
yr
n .3016773834051693 2.0735e-09 deg/d
Q 2.443149967319131 1.1195e-08 au
   Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      8857 days (24.25 yr)  
   first obs. used      1996-01-24  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:41:25  

Additional Information
 Earth MOID = .974921 au 
 Jupiter MOID = 2.77581 au 
 T_jup = 3.655 
[ 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 16.5   n/a MPO469254  

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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