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129668 (1998 QE111)
Classification: Main-belt Asteroid          SPK-ID: 2129668
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910817702675772 5.3101e-08  
a 2.653066131620385 1.6811e-08 au
q 2.146113558553409 1.4704e-07 au
i 15.49243958849838 4.5474e-06 deg
node 156.8229053002437 1.9542e-05 deg
peri 134.7737639551959 2.3986e-05 deg
M 35.21272250594682 1.3629e-05 deg
tp 2458846.110541599495
(2019-Dec-28.61054160)
5.9183e-05 TDB
period 1578.412603989805
4.32
1.5002e-05
4.107e-08
d
yr
n .2280772461459167 2.1678e-09 deg/d
Q 3.16001870468736 2.0023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      8034 days (22.00 yr)  
   first obs. used      1998-07-31  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61933  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:41:27  

Additional Information
 Earth MOID = 1.15876 au 
 Jupiter MOID = 2.22158 au 
 T_jup = 3.312 
[ 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 15.6   n/a MPO436628  
diameter diameter 3.329 km 0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.092   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129668 (1998 QE111)          Discovered 1998-Aug-28 by LONEOS at Anderson Mesa
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1998 QE111 = 2002 NO38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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