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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1322924448822321 3.6105e-08  
a 3.175293265345534 1.9451e-08 au
q 2.755225956054887 1.1876e-07 au
i 22.77570673829684 4.6279e-06 deg
node 130.5022127215275 9.978e-06 deg
peri 77.52403510848447 2.0916e-05 deg
M 355.2667028801011 1.7053e-05 deg
tp 2459423.672866586537
(2021-Jul-28.17286659)
9.7925e-05 TDB
period 2066.684537936257
5.66
1.899e-05
5.199e-08
d
yr
n .1741920420808333 1.6006e-09 deg/d
Q 3.59536057463618 2.2024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      20090 days (55.00 yr)  
   first obs. used      1966-08-08  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:47:36  

Additional Information
 Earth MOID = 1.86017 au 
 Jupiter MOID = 1.72003 au 
 T_jup = 3.067 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457406.5 (2016-Jan-19.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1335135089769838 3.6103e-08  
q 2.750439431564579 1.188e-07 au
tp 2457354.294326928097
(2015-Nov-27.79432693)
9.6333e-05 TDB
node 130.5343135736422 9.9786e-06 deg
peri 77.12152449350663 2.0755e-05 deg
i 22.77852521152842 4.6286e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      20090 days (55.00 yr)  
   first obs. used      1966-08-08  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:47:36  

Additional Information
 Jupiter MOID = 1.72003 au 
 T_jup = 3.067 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.303403229827641E-15 -4.247785343312528E-15 -4.714003843671319E-13 -1.80041146428991E-15 -6.839849246231424E-14 -4.65741435046843E-15
q -4.247785343312528E-15 1.411321676838445E-14 1.391820090880024E-12 3.887350611809948E-15 1.978780027621096E-13 1.551943811781952E-14
tp -4.714003843671319E-13 1.391820090880024E-12 9.280102079550375E-9 1.262788983578261E-12 1.768496022101584E-9 -4.10519929897234E-14
node -1.80041146428991E-15 3.887350611809948E-15 1.262788983578261E-12 9.957271657225027E-11 -9.14927998626607E-11 6.09365984877284E-12
peri -6.839849246231424E-14 1.978780027621096E-13 1.768496022101584E-9 -9.14927998626607E-11 4.307508399689761E-10 -5.766847642644648E-12
i -4.65741435046843E-15 1.551943811781952E-14 -4.10519929897234E-14 6.09365984877284E-12 -5.766847642644648E-12 2.142384673992322E-11

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 13.45   n/a MPO636317  
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

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