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249458 (2009 HC65)
Classification: Main-belt Asteroid          SPK-ID: 2249458
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2308870178681929 6.6831e-08  
a 3.084859470423744 3.6578e-08 au
q 2.372605466755153 2.2014e-07 au
i 11.87870461574179 7.7654e-06 deg
node 149.2875192131239 3.3636e-05 deg
peri 166.0750465773266 3.6835e-05 deg
M 235.1122361337439 1.81e-05 deg
tp 2459287.044816831803
(2021-Mar-13.54481683)
0.00010645 TDB
period 1979.02601830658
5.42
3.5198e-05
9.637e-08
d
yr
n .1819076640073919 3.2354e-09 deg/d
Q 3.797113474092336 4.5023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      209  
   data-arc span      8091 days (22.15 yr)  
   first obs. used      1997-02-10  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62198  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:12:05  

Additional Information
 Earth MOID = 1.36033 au 
 Jupiter MOID = 1.55903 au 
 T_jup = 3.153 
[ 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 15.7   n/a MPO291719  
diameter diameter 4.803 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249458 (2009 HC65)          Discovered 2009-Apr-23 by Spacewatch at Kitt Peak
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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