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249137 (2008 AC4)
Classification: Main-belt Asteroid          SPK-ID: 2249137
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07288484621051514 4.7632e-08  
a 3.018833098737248 3.4786e-08 au
q 2.79880591260057 1.4889e-07 au
i 5.368925388826751 6.023e-06 deg
node 87.58180968971129 6.7947e-05 deg
peri 33.60229099083471 8.4727e-05 deg
M 125.083424463082 5.1588e-05 deg
tp 2458334.837114576814
(2018-Aug-04.33711458)
0.00027056 TDB
period 1915.830492976913
5.25
3.3114e-05
9.066e-08
d
yr
n .1879080645807104 3.2479e-09 deg/d
Q 3.238860284873925 3.7321e-08 au
  Orbit Determination Parameters
   # obs. used (total)      226  
   data-arc span      9979 days (27.32 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:20:08  

Additional Information
 Earth MOID = 1.81678 au 
 Jupiter MOID = 1.82637 au 
 T_jup = 3.236 
[ 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 15.8   n/a MPO476001  
diameter diameter 4.303 km 0.697 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249137 (2008 AC4)          Discovered 2008-Jan-08 by Kugel, F. at Chante-Perdrix
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 AC4 = 1993 FQ13 = 2006 TG5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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