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JPL Small-Body Database Browser
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52390 (1993 QS4)
Classification: Main-belt Asteroid          SPK-ID: 2052390
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1993333454228824 7.9714e-08  
a 2.58193318700114 1.6527e-08 au
q 2.067267807177838 2.1089e-07 au
i 13.14403388689442 7.1377e-06 deg
node 346.9465352656185 1.8557e-05 deg
peri 28.98535936665809 2.2204e-05 deg
M 44.57923753813569 9.9669e-06 deg
tp 2458412.851083103218
(2018-Oct-21.35108310)
4.1912e-05 TDB
period 1515.360374323407
4.15
1.455e-05
3.984e-08
d
yr
n .2375672520543084 2.2811e-09 deg/d
Q 3.096598566824441 1.9822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      912  
   data-arc span      9628 days (26.36 yr)  
   first obs. used      1993-07-26  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48909  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:01:13  

Additional Information
 Earth MOID = 1.07545 au 
 Jupiter MOID = 2.40321 au 
 T_jup = 3.360 
[ 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 14.6   n/a MPO493237  

52390 (1993 QS4)          Discovered 1993-Aug-18 by Elst, E. W. at Caussols
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 QS4 = 1999 CD20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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