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JPL Small-Body Database Browser
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379165 (2009 QR40)
Classification: Main-belt Asteroid          SPK-ID: 2379165
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1586045320771742 6.6993e-08  
a 2.368415389645227 3.0075e-08 au
q 1.992773975006167 1.6253e-07 au
i 2.741595853649843 6.7612e-06 deg
node 135.1993183230818 0.00021548 deg
peri 186.8251926432782 0.00022013 deg
M 250.5039571080565 5.1373e-05 deg
tp 2459005.431126882288
(2020-Jun-04.93112688)
0.00019468 TDB
period 1331.328528661829
3.64
2.5358e-05
6.943e-08
d
yr
n .2704065842875389 5.1505e-09 deg/d
Q 2.744056804284286 3.4845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      106  
   data-arc span      6581 days (18.02 yr)  
   first obs. used      2001-05-21  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64041  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:57:15  

Additional Information
 Earth MOID = .979328 au 
 Jupiter MOID = 2.55417 au 
 T_jup = 3.528 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO334970  

379165 (2009 QR40)          Discovered 2008-Apr-06 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20

Alternate Designations
 2009 QR40 = 2012 KO26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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