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16985 (1999 AE28)
Classification: Main-belt Asteroid          SPK-ID: 2016985
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355808037835152 2.7591e-08  
a 2.378136520209924 8.1637e-09 au
q 2.05570685929293 6.5621e-08 au
i 7.11197480444592 3.3717e-06 deg
node 129.9764100276462 2.9047e-05 deg
peri 139.5763040893433 3.2853e-05 deg
M 223.2403622664685 1.7046e-05 deg
tp 2459709.372569648831
(2022-May-09.87256965)
6.4741e-05 TDB
period 1339.533564943502
3.67
6.8976e-06
1.888e-08
d
yr
n .2687502645857058 1.3839e-09 deg/d
Q 2.700566181126917 9.2706e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      24094 days (65.97 yr)  
   first obs. used      1955-03-25  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51173  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:50:23  

Additional Information
 Earth MOID = 1.04359 au 
 Jupiter MOID = 2.40646 au 
 T_jup = 3.517 
[ 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 14.6   n/a MPO449075  
diameter diameter 3.294 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16985 (1999 AE28)          Discovered 1999-Jan-11 by Spacewatch at Kitt Peak
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AE28 = 1986 VG2 = 1990 WM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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