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JPL Small-Body Database Browser
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109381 (2001 QA165)
Classification: Main-belt Asteroid          SPK-ID: 2109381
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567686704411025 2.8619e-08  
a 2.489317821647771 1.2631e-08 au
q 2.099070776442708 7.3917e-08 au
i 7.818054438333675 7.2001e-06 deg
node 28.26512190071186 4.8089e-05 deg
peri 48.93567009502369 6.249e-05 deg
M 84.24276370978393 3.9923e-05 deg
tp 2458264.801767435839
(2018-May-26.30176744)
0.00015852 TDB
period 1434.560767016505
3.93
1.0918e-05
2.989e-08
d
yr
n .2509478917011663 1.91e-09 deg/d
Q 2.879564866852833 1.4611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      7400 days (20.26 yr)  
   first obs. used      1999-01-19  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57425  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:00:05  

Additional Information
 Earth MOID = 1.123 au 
 Jupiter MOID = 2.41504 au 
 T_jup = 3.444 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457031.5 (2015-Jan-09.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569748351572713 2.8802e-08  
q 2.099605321124766 7.4506e-08 au
tp 2456831.483980209209
(2014-Jun-22.98398021)
0.00015633 TDB
node 28.28797156367928 4.811e-05 deg
peri 49.33776429923555 6.2412e-05 deg
i 7.815720798484079 7.1973e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      7400 days (20.26 yr)  
   first obs. used      1999-01-19  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57425  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:00:05  

Additional Information
 Jupiter MOID = 2.41504 au 
 T_jup = 3.444 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.295650479085016E-16 -2.12483772778589E-15 6.24698962078368E-13 9.031371807311748E-15 1.726667801428258E-13 -2.042996844815388E-15
q -2.12483772778589E-15 5.551174586967505E-15 -1.397458415707321E-12 -2.167751697742147E-14 -3.846472808128449E-13 5.267645573165029E-15
tp 6.24698962078368E-13 -1.397458415707321E-12 2.443888727754728E-8 3.751604842870305E-10 6.289595444178032E-9 -5.355632497805707E-11
node 9.031371807311748E-15 -2.167751697742147E-14 3.751604842870305E-10 2.314544758773068E-9 -2.19091743506666E-9 -2.66586802655839E-10
peri 1.726667801428258E-13 -3.846472808128449E-13 6.289595444178032E-9 -2.19091743506666E-9 3.895298106548473E-9 2.496269218967135E-10
i -2.042996844815388E-15 5.267645573165029E-15 -5.355632497805707E-11 -2.66586802655839E-10 2.496269218967135E-10 5.180156740919328E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO338039  

109381 (2001 QA165)          Discovered 2001-Aug-22 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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