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JPL Small-Body Database Browser
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109066 (2001 QE21)
Classification: Main-belt Asteroid          SPK-ID: 2109066
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1191284470887169 5.3525e-08  
a 2.659755546143489 1.4547e-08 au
q 2.342902998295813 1.4454e-07 au
i 13.62716238269636 6.5241e-06 deg
node 353.6728763764046 1.6745e-05 deg
peri 319.4423075225976 2.8184e-05 deg
M 55.51412956600836 2.2412e-05 deg
tp 2458356.178297772045
(2018-Aug-25.67829777)
9.8254e-05 TDB
period 1584.386056120742
4.34
1.2999e-05
3.559e-08
d
yr
n .2272173493380993 1.8641e-09 deg/d
Q 2.976608093991164 1.628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      6716 days (18.39 yr)  
   first obs. used      2001-07-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54425  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 10:13:04  

Additional Information
 Earth MOID = 1.34637 au 
 Jupiter MOID = 2.412 au 
 T_jup = 3.336 
[ 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 15.0   n/a MPO309936  
diameter diameter 2.937 km 0.431 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109066 (2001 QE21)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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