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109112 (2001 QR39)
Classification: Main-belt Asteroid          SPK-ID: 2109112
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004285530663884575 4.088e-08  
a 2.518432275825473 1.5756e-08 au
q 2.507639457082507 1.0578e-07 au
i 13.22800328123611 5.1484e-06 deg
node 315.7866708098247 2.047e-05 deg
peri 332.296143306503 0.00064701 deg
M 325.2620550776045 0.00064536 deg
tp 2459341.362523125799
(2021-May-06.86252313)
0.0026168 TDB
period 1459.801621499917
4.00
1.3699e-05
3.751e-08
d
yr
n .2466088506122546 2.3142e-09 deg/d
Q 2.52922509456844 1.5823e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      7380 days (20.21 yr)  
   first obs. used      2000-03-12  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51655  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:14:04  

Additional Information
 Earth MOID = 1.49246 au 
 Jupiter MOID = 2.51132 au 
 T_jup = 3.421 
[ 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 15.43   n/a E2021B55  

109112 (2001 QR39)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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