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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0733089842716972 5.4807e-08  
a 3.016938423243357 4.0131e-08 au
q 2.795769731825131 1.7959e-07 au
i 5.369441152795137 6.0288e-06 deg
node 87.57937708581609 8.4473e-05 deg
peri 33.13156113273153 0.00010372 deg
M 50.31644417417915 5.7836e-05 deg
tp 2458332.980442375148
(2018-Aug-02.48044237)
0.00030738 TDB
period 1914.027160018765
5.24
3.819e-05
1.046e-07
d
yr
n .1880851053317711 3.7529e-09 deg/d
Q 3.238107114661584 4.3073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      9569 days (26.20 yr)  
   first obs. used      1993-03-17  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:30  

Additional Information
 Earth MOID = 1.81406 au 
 Jupiter MOID = 1.82995 au 
 T_jup = 3.237 
[ 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 15.7   n/a MPO437157  
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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