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JPL Small-Body Database Browser
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249453 (2009 HD39)
Classification: Main-belt Asteroid          SPK-ID: 2249453
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491783478718164 5.7696e-08  
a 2.978314188578387 3.6916e-08 au
q 2.534014198483074 1.7866e-07 au
i 10.8863710790867 6.2014e-06 deg
node 103.8098860788678 2.8324e-05 deg
peri 250.16911331 3.5602e-05 deg
M 226.1982820607712 2.2942e-05 deg
tp 2459298.271747993054
(2021-Mar-24.77174799)
0.00012705 TDB
period 1877.38866993913
5.14
3.4905e-05
9.556e-08
d
yr
n .191755711411464 3.5652e-09 deg/d
Q 3.4226141786737 4.2423e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      6814 days (18.66 yr)  
   first obs. used      2000-10-02  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56441  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:45  

Additional Information
 Earth MOID = 1.55264 au 
 Jupiter MOID = 2.06444 au 
 T_jup = 3.216 
[ 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 15.6   n/a MPO433634  

249453 (2009 HD39)          Discovered 2009-Apr-18 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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