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120914 (1998 SZ78)
Classification: Main-belt Asteroid          SPK-ID: 2120914
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08960610944374929 4.1847e-08  
a 2.953960195773821 1.9723e-08 au
q 2.689267315178833 1.2047e-07 au
i 1.113876457367435 4.5865e-06 deg
node 222.632869723228 0.0002632 deg
peri 170.7547422727992 0.00026519 deg
M 67.36149365922782 3.0706e-05 deg
tp 2458653.511890235522
(2019-Jun-19.01189024)
0.00015829 TDB
period 1854.408397580122
5.08
1.8572e-05
5.085e-08
d
yr
n .1941319940471451 1.9443e-09 deg/d
Q 3.218653076368808 2.149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      9629 days (26.36 yr)  
   first obs. used      1993-09-17  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:24:36  

Additional Information
 Earth MOID = 1.69534 au 
 Jupiter MOID = 2.16684 au 
 T_jup = 3.262 
[ 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 15.3   n/a MPO502803  

120914 (1998 SZ78)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 SZ78 = 1998 SM167 = 2000 AV108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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