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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2158569753433155 6.6351e-08  
a 2.448620354015182 1.1461e-08 au
q 1.920068570633386 1.675e-07 au
i 1.587581590744673 6.6712e-06 deg
node 352.5257691262123 0.00016871 deg
peri 322.6448856332966 0.00016908 deg
M 258.6333370713319 1.246e-05 deg
tp 2459394.569895153481
(2021-Jun-29.06989515)		 4.9495e-05 TDB
period 1399.524835448947
3.83		 9.8257e-06
2.69e-08		 d
yr
n .2572301618959962 1.8059e-09 deg/d
Q 2.977172137396977 1.3935e-08 au
   Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      7925 days (21.70 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:14  

Additional Information
 Earth MOID = .906671 au 
 Jupiter MOID = 2.31883 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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