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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2062432230335734 7.3664e-08  
a 2.751063969236325 2.3814e-08 au
q 2.18367566944949 2.057e-07 au
i 8.835399446299002 7.8796e-06 deg
node 301.29790445 4.2812e-05 deg
peri 20.79248383372629 4.5678e-05 deg
M 281.7208274860758 2.0723e-05 deg
tp 2459362.904169501145
(2021-May-28.40416950)
9.8769e-05 TDB
period 1666.669394048655
4.56
2.164e-05
5.925e-08
d
yr
n .2159996465318728 2.8046e-09 deg/d
Q 3.318452269023159 2.8725e-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 = 1.17329 au 
 Jupiter MOID = 2.01085 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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