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249456 (2009 HC52)
Classification: Main-belt Asteroid          SPK-ID: 2249456
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881566206406226 5.6539e-08  
a 3.085661030762449 3.3868e-08 au
q 2.505073478771726 1.8821e-07 au
i 3.16716271682626 5.9808e-06 deg
node 107.4214713602529 0.00013174 deg
peri 183.0418439921215 0.00013299 deg
M 309.5633293188794 2.0542e-05 deg
tp 2459277.873304725806
(2021-Mar-04.37330473)
0.0001153 TDB
period 1979.797404404559
5.42
3.2595e-05
8.924e-08
d
yr
n .1818367875415379 2.9937e-09 deg/d
Q 3.666248582753172 4.024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      8016 days (21.95 yr)  
   first obs. used      1998-05-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61838  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:43:56  

Additional Information
 Earth MOID = 1.48881 au 
 Jupiter MOID = 1.52442 au 
 T_jup = 3.197 
[ 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 16.1   n/a MPO391308  
diameter diameter 2.543 km 0.826 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.099   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249456 (2009 HC52)          Discovered 2009-Apr-17 by CSS at Catalina
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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