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249369 (2009 AC8)
Classification: Main-belt Asteroid          SPK-ID: 2249369
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481090213273542 4.3884e-08  
a 2.58465822265664 2.2652e-08 au
q 2.201847022833266 1.1568e-07 au
i 13.31407723551632 6.9174e-06 deg
node 178.8480836908763 1.6636e-05 deg
peri 72.44261672878963 2.8141e-05 deg
M 134.4082029490373 2.2291e-05 deg
tp 2458033.835005163867
(2017-Oct-07.33500516)
9.201e-05 TDB
period 1517.760030006183
4.16
1.9952e-05
5.463e-08
d
yr
n .2371916461646005 3.1181e-09 deg/d
Q 2.967469422480014 2.6007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      6226 days (17.05 yr)  
   first obs. used      2002-10-09  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62781  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:45:39  

Additional Information
 Earth MOID = 1.23168 au 
 Jupiter MOID = 2.14347 au 
 T_jup = 3.370 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO413153  
diameter diameter 2.792 km 0.572 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.143   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249369 (2009 AC8)          Discovered 2009-Jan-01 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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