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442561 (2012 AK15)
Classification: Main-belt Asteroid          SPK-ID: 2442561
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 .05168028800369313 7.6299e-08  
a 3.169687750922453 7.5922e-08 au
q 3.005877375073002 2.1893e-07 au
i 11.95368569858121 1.0418e-05 deg
node 318.1439345098874 3.5735e-05 deg
peri 126.1981122258128 0.00011159 deg
M 197.8989135371488 0.00010486 deg
tp 2459928.625220308201
(2022-Dec-15.12522031)
0.00060832 TDB
period 2061.214311401448
5.64
7.4057e-05
2.028e-07
d
yr
n .1746543277953621 6.2751e-09 deg/d
Q 3.333498126771904 7.9845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      6635 days (18.17 yr)  
   first obs. used      2001-03-25  
   last obs. used      2019-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53169  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:47  

Additional Information
 Earth MOID = 2.03989 au 
 Jupiter MOID = 1.79169 au 
 T_jup = 3.167 
[ 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 15.9   n/a MPO477090  
diameter diameter 4.171 km 0.887 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

442561 (2012 AK15)          Discovered 2004-Aug-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2012 AK15 = 2010 NM72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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