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173200 (1998 QJ91)
Classification: Main-belt Asteroid          SPK-ID: 2173200
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3391775450352212 5.0475e-08  
a 2.601038716401761 7.1272e-09 au
q 1.718824790031048 1.2931e-07 au
i 5.489881158068909 5.7143e-06 deg
node 232.4113744425798 4.0453e-05 deg
peri 140.5893728083728 4.1095e-05 deg
M 62.36242251703212 5.5226e-06 deg
tp 2458735.076648616460
(2019-Sep-08.57664862)
2.3323e-05 TDB
period 1532.211268283836
4.19
6.2977e-06
1.724e-08
d
yr
n .2349545440970555 9.6571e-10 deg/d
Q 3.483252642772473 9.5446e-09 au
  Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      15454 days (42.31 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:00:40  

Additional Information
 Earth MOID = .724098 au 
 Jupiter MOID = 2.01172 au 
 T_jup = 3.325 
[ 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 15.9   n/a MPO502964  

173200 (1998 QJ91)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1998 QJ91 = 2181 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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