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243400 (2009 AP1)
Classification: Main-belt Asteroid          SPK-ID: 2243400
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1500858336987477 6.1227e-08  
a 2.351358330821034 2.3862e-08 au
q 1.998452755415263 1.3587e-07 au
i 23.11481534349232 6.3771e-06 deg
node 295.1179261416246 1.438e-05 deg
peri 359.2552446059819 2.5435e-05 deg
M 224.1564762288652 2.2968e-05 deg
tp 2459497.450453433545
(2021-Oct-09.95045343)
8.8681e-05 TDB
period 1316.972338979408
3.61
2.0048e-05
5.489e-08
d
yr
n .2733542606361673 4.1611e-09 deg/d
Q 2.704263906226804 2.7444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      332  
   data-arc span      7070 days (19.36 yr)  
   first obs. used      2000-09-25  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54809  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:20:20  

Additional Information
 Earth MOID = .982446 au 
 Jupiter MOID = 2.51897 au 
 T_jup = 3.435 
[ 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 16.0   n/a MPO454786  
diameter diameter 1.888 km 0.354 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.237   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243400 (2009 AP1)          Discovered 2009-Jan-03 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

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