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442591 (2012 CR9)
Classification: Main-belt Asteroid          SPK-ID: 2442591
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007671162968561 6.6188e-08  
a 3.093448639585837 7.5645e-08 au
q 2.472385876803756 2.0609e-07 au
i 3.161615640234067 1.0513e-05 deg
node 201.9074795211788 0.0002523 deg
peri 228.679016067335 0.00026004 deg
M 240.484053425857 7.5269e-05 deg
tp 2459660.260250322448
(2022-Mar-21.76025032)
0.00043551 TDB
period 1987.297067247315
5.44
7.2894e-05
1.996e-07
d
yr
n .1811505717656245 6.6446e-09 deg/d
Q 3.714511402367918 9.0832e-08 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      8997 days (24.63 yr)  
   first obs. used      1994-10-08  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69702  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:49  

Additional Information
 Earth MOID = 1.48821 au 
 Jupiter MOID = 1.59897 au 
 T_jup = 3.190 
[ 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 16.8   n/a MPO456096  
diameter diameter 2.717 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

442591 (2012 CR9)          Discovered 2005-Nov-01 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2012 CR9 = 2005 VD72 = 2010 NH86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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