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249146 (2008 AT56)
Classification: Main-belt Asteroid          SPK-ID: 2249146
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1152926995124748 6.0195e-08  
a 3.075074976453215 2.9962e-08 au
q 2.720541281214664 1.9179e-07 au
i 13.77664967916573 5.5342e-06 deg
node 121.430464113002 2.8971e-05 deg
peri 134.087504723505 3.9243e-05 deg
M 338.6522764495889 2.6174e-05 deg
tp 2459117.296831169527
(2020-Sep-24.79683117)
0.0001432 TDB
period 1969.617937094748
5.39
2.8786e-05
7.881e-08
d
yr
n .1827765645407413 2.6713e-09 deg/d
Q 3.429608671691767 3.3416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      6275 days (17.18 yr)  
   first obs. used      2003-02-21  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:41:02  

Additional Information
 Earth MOID = 1.72474 au 
 Jupiter MOID = 1.78605 au 
 T_jup = 3.175 
[ 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 MPO433632  
diameter diameter 3.301 km 1.417 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249146 (2008 AT56)          Discovered 2008-Jan-11 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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