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442564 (2012 AP18)
Classification: Main-belt Asteroid          SPK-ID: 2442564
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2039640799763761 6.7145e-08  
a 2.677731632737046 2.7107e-08 au
q 2.131570563842195 1.9175e-07 au
i 12.26250960559913 6.3131e-06 deg
node 76.51741477283285 2.8101e-05 deg
peri 306.9625715117537 3.2274e-05 deg
M 33.23706715371803 1.3615e-05 deg
tp 2458852.735811093735
(2020-Jan-04.23581109)
5.9952e-05 TDB
period 1600.475389727779
4.38
2.4302e-05
6.654e-08
d
yr
n .2249331681765076 3.4155e-09 deg/d
Q 3.223892701631898 3.2635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      6202 days (16.98 yr)  
   first obs. used      2002-12-05  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56768  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 22:53:03  

Additional Information
 Earth MOID = 1.16152 au 
 Jupiter MOID = 2.28236 au 
 T_jup = 3.316 
[ 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 16.4   n/a MPO450446  
diameter diameter 3.126 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.024   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

442564 (2012 AP18)          Discovered 2002-Dec-05 by LINEAR at Socorro
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 AP18 = 2002 XY18 = 2006 SY111 = 2010 HX51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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