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118274 (1998 QE20)
Classification: Main-belt Asteroid          SPK-ID: 2118274
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 .1568300313521473 3.5817e-08  
a 2.227509307269684 7.4951e-09 au
q 1.87816895277338 8.0407e-08 au
i 4.182708911391923 3.974e-06 deg
node 229.2596148651481 4.7953e-05 deg
peri 119.2002700825943 4.9233e-05 deg
M 244.0760763458341 1.1414e-05 deg
tp 2459591.519385887477
(2022-Jan-12.01938589)
3.901e-05 TDB
period 1214.304817178545
3.32
6.1288e-06
1.678e-08
d
yr
n .2964659242944167 1.4963e-09 deg/d
Q 2.576849661765989 8.6706e-09 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      7932 days (21.72 yr)  
   first obs. used      1998-08-04  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:36:54  

Additional Information
 Earth MOID = .874481 au 
 Jupiter MOID = 2.84675 au 
 T_jup = 3.625 
[ 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 16.09   n/a E2021B55  

118274 (1998 QE20)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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