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120918 (1998 SA84)
Classification: Main-belt Asteroid          SPK-ID: 2120918
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2353728892904514 4.2283e-08  
a 2.283762090685467 5.9356e-09 au
q 1.746226408948826 9.5206e-08 au
i 4.490332089862164 3.6203e-06 deg
node 167.6702855611985 5.8264e-05 deg
peri 275.1512544203226 5.9499e-05 deg
M 101.8344777944519 8.8429e-06 deg
tp 2458843.911727313656
(2019-Dec-26.41172731)		 3.1311e-05 TDB
period 1260.592492320687
3.45		 4.9145e-06
1.346e-08		 d
yr
n .2855799968610461 1.1134e-09 deg/d
Q 2.821297772422107 7.3327e-09 au
   Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      21702 days (59.42 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:47  

Additional Information
 Earth MOID = .768707 au 
 Jupiter MOID = 2.43628 au 
 T_jup = 3.562 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.96   n/a E2021B55  

120918 (1998 SA84)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 SA84 = 2003 BE27 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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