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101028 (1998 QZ74)
Classification: Main-belt Asteroid          SPK-ID: 2101028
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 .1404401381586339 5.2401e-08  
a 2.739893078690605 1.7831e-08 au
q 2.355102116179411 1.4505e-07 au
i 11.67088634971169 6.0709e-06 deg
node 225.7923746363343 2.1137e-05 deg
peri 166.8528405416527 2.7273e-05 deg
M 295.8716197870809 2.0151e-05 deg
tp 2459495.584650627992
(2021-Oct-08.08465063)
9.4739e-05 TDB
period 1656.528262110639
4.54
1.6171e-05
4.427e-08
d
yr
n .2173219788845086 2.1215e-09 deg/d
Q 3.124684041201797 2.0335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      8002 days (21.91 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5452  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:52  

Additional Information
 Earth MOID = 1.36232 au 
 Jupiter MOID = 2.30404 au 
 T_jup = 3.306 
[ 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 14.87   n/a E2021B55  

101028 (1998 QZ74)          Discovered 1998-Aug-24 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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