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JPL Small-Body Database Browser
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441464 (2008 QE21)
Classification: Main-belt Asteroid          SPK-ID: 2441464
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158330426454408 6.716e-08  
a 2.327021485996709 3.142e-08 au
q 1.95858318175028 1.3939e-07 au
i 6.204538469056191 6.2203e-06 deg
node 238.5215618440258 5.5753e-05 deg
peri 115.3085959201417 6.4614e-05 deg
M 99.72947137756947 2.8602e-05 deg
tp 2458641.313477124392
(2019-Jun-06.81347712)
0.00010131 TDB
period 1296.579099929952
3.55
2.626e-05
7.19e-08
d
yr
n .2776537120021825 5.6234e-09 deg/d
Q 2.695459790243138 3.6394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      6709 days (18.37 yr)  
   first obs. used      2001-09-15  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53101  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:36:22  

Additional Information
 Earth MOID = .963707 au 
 Jupiter MOID = 2.77335 au 
 T_jup = 3.549 
[ 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 17.5   n/a MPO450444  

441464 (2008 QE21)          Discovered 2008-Aug-26 by LINEAR at Socorro
Reference: Last Updated: 2015-09-02

Alternate Designations
 2008 QE21 = 2012 WB32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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