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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08824837195450685 5.7155e-08  
a 3.363870427590212 2.8226e-08 au
q 3.067014338889464 1.9128e-07 au
i 12.61306810702112 6.1535e-06 deg
node 169.4388276136335 2.1591e-05 deg
peri 204.300243567904 3.3686e-05 deg
M 48.66517949423305 2.5605e-05 deg
tp 2458695.869667831063
(2019-Jul-31.36966783)
0.00015989 TDB
period 2253.498717575125
6.17
2.8364e-05
7.766e-08
d
yr
n .1597515885819441 2.0107e-09 deg/d
Q 3.660726516290959 3.0717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      9216 days (25.23 yr)  
   first obs. used      1994-09-05  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58022  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 10:57:08  

Additional Information
 Earth MOID = 2.07085 au 
 Jupiter MOID = 1.80637 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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