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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .003924448575456166 4.1846e-08  
a 2.518975515582148 1.7543e-08 au
q 2.509089925708413 1.0649e-07 au
i 13.2262969105884 5.3309e-06 deg
node 315.7864740835942 2.1009e-05 deg
peri 329.0467177600556 0.00071975 deg
M 180.539508574695 0.00071788 deg
tp 2459328.448571351412
(2021-Apr-23.94857135)
0.0029113 TDB
period 1460.273977883224
4.00
1.5255e-05
4.177e-08
d
yr
n .2465290797839505 2.5754e-09 deg/d
Q 2.528861105455884 1.7612e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      6890 days (18.86 yr)  
   first obs. used      2000-03-12  
   last obs. used      2019-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52225  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:35:51  

Additional Information
 Earth MOID = 1.49524 au 
 Jupiter MOID = 2.51213 au 
 T_jup = 3.420 
[ 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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