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15209 (1979 ML2)
Classification: Main-belt Asteroid          SPK-ID: 2015209
[ 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914275505813933 2.973e-08  
a 3.060880022219595 1.6218e-08 au
q 2.474943256942577 9.3318e-08 au
i 12.90892350730137 3.4641e-06 deg
node 130.1588346775144 1.7069e-05 deg
peri 150.213739177413 1.9588e-05 deg
M 282.7150814590889 1.0681e-05 deg
tp 2459620.413792624610
(2022-Feb-09.91379262)		 5.9142e-05 TDB
period 1955.995661234186
5.36		 1.5546e-05
4.256e-08		 d
yr
n .184049488010034 1.4628e-09 deg/d
Q 3.646816787496613 1.9323e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2010  
   data-arc span      15241 days (41.73 yr)  
   first obs. used      1979-06-23  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:51:58  

Additional Information
 Earth MOID = 1.46568 au 
 Jupiter MOID = 1.61215 au 
 T_jup = 3.167 
[ 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 13.37   n/a E2021B10  
diameter diameter 6.956 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15209 (1979 ML2)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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