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249452 (2009 HV20)
Classification: Main-belt Asteroid          SPK-ID: 2249452
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2549488748484735 5.7432e-08  
a 2.641136534151303 2.8241e-08 au
q 1.967781746448232 1.621e-07 au
i 14.68417046726952 4.5898e-06 deg
node 78.49399101288752 2.8342e-05 deg
peri 222.8286171917447 3.1365e-05 deg
M 59.44712409540841 1.0919e-05 deg
tp 2458341.611323926017
(2018-Aug-11.11132393)
4.8018e-05 TDB
period 1567.778505770179
4.29
2.5146e-05
6.885e-08
d
yr
n .2296242732471627 3.683e-09 deg/d
Q 3.314491321854375 3.5442e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      6627 days (18.14 yr)  
   first obs. used      2001-10-14  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55462  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:44:52  

Additional Information
 Earth MOID = .976621 au 
 Jupiter MOID = 1.97475 au 
 T_jup = 3.303 
[ 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 15.5   n/a MPO450107  
diameter diameter 1.903 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.337   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249452 (2009 HV20)          Discovered 2009-Apr-20 by Tozzi, F. at Tzec Maun
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 HV20 = 2006 WX194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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