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243493 (2009 UY39)
Classification: Main-belt Asteroid          SPK-ID: 2243493
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2296935496546728 6.4963e-08  
a 2.739262938811471 2.4224e-08 au
q 2.110071910958374 1.7358e-07 au
i .8741816210650138 7.4856e-06 deg
node 281.2219398010583 0.00050893 deg
peri 88.30476631856816 0.00050968 deg
M 147.853641624574 1.997e-05 deg
tp 2458320.390980720922
(2018-Jul-20.89098072)
9.0534e-05 TDB
period 1655.956824940148
4.53
2.1966e-05
6.014e-08
d
yr
n .2173969722990886 2.8837e-09 deg/d
Q 3.368453966664569 2.9788e-08 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      6612 days (18.10 yr)  
   first obs. used      2000-11-26  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57304  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:44:11  

Additional Information
 Earth MOID = 1.10979 au 
 Jupiter MOID = 2.10025 au 
 T_jup = 3.312 
[ 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 17.4   n/a MPO454787  
diameter diameter 2.146 km 0.508 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243493 (2009 UY39)          Discovered 2009-Oct-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2009 UY39 = 2006 BK18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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