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16865 (1998 AQ)
Classification: Main-belt Asteroid          SPK-ID: 2016865
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325099879430332 3.6151e-08  
a 3.176094283808696 2.0868e-08 au
q 2.755230068555269 1.1893e-07 au
i 22.77563822848777 4.9601e-06 deg
node 130.5022726440428 1.0115e-05 deg
peri 77.50105525819967 2.1476e-05 deg
M 321.159478285704 1.8177e-05 deg
tp 2459423.559672476093
(2021-Jul-28.05967248)
0.00010488 TDB
period 2067.466618550518
5.66
2.0376e-05
5.579e-08
d
yr
n .1741261487706112 1.7161e-09 deg/d
Q 3.596958499062123 2.3633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1440  
   data-arc span      19945 days (54.61 yr)  
   first obs. used      1966-08-08  
   last obs. used      2021-03-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:44:45  

Additional Information
 Earth MOID = 1.85896 au 
 Jupiter MOID = 1.71921 au 
 T_jup = 3.066 
[ 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 13.42   n/a E2021B10  
diameter diameter 9.855 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16865 (1998 AQ)          Discovered 1998-Jan-05 by Kobayashi, T. at Oizumi
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 AQ = 1966 PW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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