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78421 (2002 QE41)
Classification: Main-belt Asteroid          SPK-ID: 2078421
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137247318963397 6.8992e-08  
a 3.017908230506693 2.4587e-08 au
q 2.674697426104562 2.0851e-07 au
i 9.597335851434169 7.0422e-06 deg
node 340.4906705145066 2.8747e-05 deg
peri 347.5298659630274 3.5647e-05 deg
M 168.9641654008595 2.1785e-05 deg
tp 2458301.727909629535
(2018-Jul-02.22790963)		 0.00011527 TDB
period 1914.950142035984
5.24		 2.3402e-05
6.407e-08		 d
yr
n .187994450663476 2.2974e-09 deg/d
Q 3.361119034908823 2.7383e-08 au
   Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      10334 days (28.29 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:15:03  

Additional Information
 Earth MOID = 1.66269 au 
 Jupiter MOID = 1.99772 au 
 T_jup = 3.216 
[ 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 14.63   n/a E2020-QM9  

78421 (2002 QE41)          Discovered 2002-Aug-29 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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