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JPL Small-Body Database Browser
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74111 (1998 QD39)
Classification: Main-belt Asteroid          SPK-ID: 2074111
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2155212076105986 6.9434e-08  
a 2.449327892486366 1.1848e-08 au
q 1.921445787263382 1.7424e-07 au
i 1.587150267889416 6.8016e-06 deg
node 352.5320464361299 0.00021794 deg
peri 322.6029411756767 0.00021829 deg
M 155.7993834126343 1.28e-05 deg
tp 2457994.556609040086
(2017-Aug-29.05660904)
4.9056e-05 TDB
period 1400.131476565776
3.83
1.0159e-05
2.781e-08
d
yr
n .2571187106535189 1.8656e-09 deg/d
Q 2.97720999770935 1.4402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      7441 days (20.37 yr)  
   first obs. used      1998-08-17  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63207  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:02:11  

Additional Information
 Earth MOID = .907197 au 
 Jupiter MOID = 2.31601 au 
 T_jup = 3.464 
[ 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 16.6   n/a MPO319935  

74111 (1998 QD39)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QD39 = 2002 RR97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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