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134868 (2000 QE21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2134868
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0884211330829625 5.5742e-08  
a 3.364657593145847 2.7688e-08 au
q 3.067150756323698 1.8549e-07 au
i 12.61325525710018 5.8731e-06 deg
node 169.4309020234153 2.135e-05 deg
peri 204.4131678166427 3.3297e-05 deg
M 80.49251715590648 2.5178e-05 deg
tp 2458696.462618523021
(2019-Jul-31.96261852)
0.0001571 TDB
period 2254.289761870089
6.17
2.7826e-05
7.618e-08
d
yr
n .1596955307561505 1.9712e-09 deg/d
Q 3.662164429967997 3.0136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      579  
   data-arc span      9631 days (26.37 yr)  
   first obs. used      1994-09-05  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56494  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:00:59  

Additional Information
 Earth MOID = 2.06953 au 
 Jupiter MOID = 1.8061 au 
 T_jup = 3.110 
[ 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 14.6   n/a MPO417708  
diameter diameter 7.936 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134868 (2000 QE21)          Discovered 2000-Aug-24 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2000 QE21 = 1994 RY4 = 1997 EX43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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