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249450 (2009 HF5)
Classification: Main-belt Asteroid          SPK-ID: 2249450
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949402596219302 5.7287e-08  
a 2.431362580027421 1.727e-08 au
q 1.957392127441829 1.3673e-07 au
i 3.807929458872533 5.0151e-06 deg
node 126.3322641710138 7.4691e-05 deg
peri 239.9334112279155 7.5496e-05 deg
M 172.9552337989334 1.0671e-05 deg
tp 2458335.220368000327
(2018-Aug-04.72036800)
3.8683e-05 TDB
period 1384.75524711967
3.79
1.4754e-05
4.039e-08
d
yr
n .2599737395823631 2.7699e-09 deg/d
Q 2.905333032613012 2.0637e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      7412 days (20.29 yr)  
   first obs. used      1999-10-19  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54575  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:23:47  

Additional Information
 Earth MOID = .959006 au 
 Jupiter MOID = 2.55755 au 
 T_jup = 3.478 
[ 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 17.0   n/a MPO454849  
diameter diameter 2.227 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249450 (2009 HF5)          Discovered 2009-Apr-17 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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