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20233 (1998 AZ6)
Classification: Main-belt Asteroid          SPK-ID: 2020233
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1942741320069022 3.9075e-08  
a 2.142150681376684 6.8944e-09 au
q 1.725986217124235 8.5343e-08 au
i 2.021840214617606 3.5469e-06 deg
node 78.03078450820496 0.00011022 deg
peri 245.5974732684521 0.00011054 deg
M 246.3018056596376 8.8911e-06 deg
tp 2459562.180020189497
(2021-Dec-13.68002019)
2.9083e-05 TDB
period 1145.179200282133
3.14
5.5285e-06
1.514e-08
d
yr
n .3143612806723246 1.5176e-09 deg/d
Q 2.558315145629134 8.2338e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1617  
   data-arc span      11138 days (30.49 yr)  
   first obs. used      1990-09-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54533  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:41  

Additional Information
 Earth MOID = .712966 au 
 Jupiter MOID = 2.75852 au 
 T_jup = 3.687 
[ 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 15.15   n/a E2021B10  
diameter diameter 2.750 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20233 (1998 AZ6)          Discovered 1998-Jan-05 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 AZ6 = 1990 SQ18 = 1999 JO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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