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268876 (2007 AU21)
Classification: Main-belt Asteroid          SPK-ID: 2268876
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418312902993195 5.6756e-08  
a 2.40167288960653 2.3358e-08 au
q 2.061040524796741 1.3421e-07 au
i 2.690308815309486 9.0025e-06 deg
node 12.26272180503217 0.00011965 deg
peri 104.0623530658567 0.00012698 deg
M 214.5798441191787 4.734e-05 deg
tp 2459549.650414235573
(2021-Dec-01.15041424)
0.00018472 TDB
period 1359.468692131138
3.72
1.9833e-05
5.43e-08
d
yr
n .2648093347671397 3.8632e-09 deg/d
Q 2.74230525441632 2.6671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      9053 days (24.79 yr)  
   first obs. used      1994-09-08  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:38:58  

Additional Information
 Earth MOID = 1.07928 au 
 Jupiter MOID = 2.34096 au 
 T_jup = 3.510 
[ 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 17.5   n/a MPO476136  

268876 (2007 AU21)          Discovered 2007-Jan-15 by LONEOS at Anderson Mesa
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2007 AU21 = 2000 GR181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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