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JPL Small-Body Database Browser
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85658 (1998 QS28)
Classification: Main-belt Asteroid          SPK-ID: 2085658
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2059362664486805 7.3633e-08  
a 2.751421136157085 2.4034e-08 au
q 2.184803739948908 2.0548e-07 au
i 8.834972444978078 7.8792e-06 deg
node 301.29416977 4.281e-05 deg
peri 20.79336107583721 4.5686e-05 deg
M 195.3043168005958 2.0096e-05 deg
tp 2459363.129755245276
(2021-May-28.62975525)
9.8887e-05 TDB
period 1666.993976738866
4.56
2.1842e-05
5.98e-08
d
yr
n .2159575889435825 2.8297e-09 deg/d
Q 3.318038532365262 2.8984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      7532 days (20.62 yr)  
   first obs. used      1998-07-20  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58022  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:35:44  

Additional Information
 Earth MOID = 1.17355 au 
 Jupiter MOID = 2.00836 au 
 T_jup = 3.297 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO432400  

85658 (1998 QS28)          Discovered 1998-Aug-22 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 QS28 = 2002 NX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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