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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00414421052298259 4.1132e-08  
a 2.518259226926018 1.5985e-08 au
q 2.507823030538193 1.0638e-07 au
i 13.22792879017629 5.1894e-06 deg
node 315.7877335136862 2.051e-05 deg
peri 332.2411766166786 0.00067187 deg
M 275.9782247500747 0.00067019 deg
tp 2459341.173561044669
(2021-May-06.67356104)
0.0027171 TDB
period 1459.651163180936
4.00
1.3898e-05
3.805e-08
d
yr
n .2466342706263271 2.3483e-09 deg/d
Q 2.528695423313842 1.6051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      7351 days (20.13 yr)  
   first obs. used      2000-03-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:01:13  

Additional Information
 Earth MOID = 1.49462 au 
 Jupiter MOID = 2.51205 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 15.4   n/a MPO432615  

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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