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392149 (2009 HQ40)
Classification: Main-belt Asteroid          SPK-ID: 2392149
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342428775979305 5.4026e-08  
a 3.191569941704032 6.3267e-08 au
q 2.763124408674623 1.7937e-07 au
i 12.80397762572853 8.1277e-06 deg
node 160.0452032766739 2.8506e-05 deg
peri 127.1638582453159 4.3626e-05 deg
M 262.4879902525764 3.2574e-05 deg
tp 2459564.605823156189
(2021-Dec-16.10582316)
0.00019475 TDB
period 2082.595742434624
5.70
6.1926e-05
1.695e-07
d
yr
n .1728612004071169 5.14e-09 deg/d
Q 3.62001547473344 7.176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      134  
   data-arc span      5256 days (14.39 yr)  
   first obs. used      2005-09-13  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63451  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:42:42  

Additional Information
 Earth MOID = 1.76984 au 
 Jupiter MOID = 1.77587 au 
 T_jup = 3.144 
[ 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 16.0   n/a MPO423457  

392149 (2009 HQ40)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2009 HQ40 = 2010 GT50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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