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201683 (2003 UA99)
Classification: Main-belt Asteroid          SPK-ID: 2201683
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 .1539273677609086 4.8435e-08  
a 3.097983282737272 2.3753e-08 au
q 2.621118870658226 1.5096e-07 au
i 4.919645699253081 5.5988e-06 deg
node 199.3051103476978 5.2828e-05 deg
peri 169.7162221884693 5.5635e-05 deg
M 39.07406100900351 1.5061e-05 deg
tp 2458784.326187871221
(2019-Oct-27.82618787)
8.3577e-05 TDB
period 1991.668394754985
5.45
2.2906e-05
6.271e-08
d
yr
n .1807529812432894 2.0788e-09 deg/d
Q 3.574847694816319 2.7409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      10236 days (28.02 yr)  
   first obs. used      1992-10-20  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4953  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 05:04:14  

Additional Information
 Earth MOID = 1.62072 au 
 Jupiter MOID = 1.89482 au 
 T_jup = 3.199 
[ 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 15.3   n/a MPO494132  
diameter diameter 4.373 km 1.799 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201683 (2003 UA99)          Discovered 2003-Oct-19 by Spacewatch at Kitt Peak
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Alternate Designations
 2003 UA99 = 2001 HV39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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