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243461 (2009 SF21)
Classification: Main-belt Asteroid          SPK-ID: 2243461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2480482027766515 1.8095e-07  
a 2.289293190134957 2.1909e-08 au
q 1.721438128693154 4.0528e-07 au
i 6.369588591035131 8.725e-06 deg
node 313.5011114500111 0.00010392 deg
peri 100.1457722845957 0.0001356 deg
M 246.9968696397366 5.9579e-05 deg
tp 2458997.635330397720
(2020-May-28.13533040)
0.00020574 TDB
period 1265.174853894606
3.46
1.8162e-05
4.972e-08
d
yr
n .2845456490791031 4.0847e-09 deg/d
Q 2.857148251576761 2.7343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      6143 days (16.82 yr)  
   first obs. used      2000-02-05  
   last obs. used      2016-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62396  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:32:58  

Additional Information
 Earth MOID = .746265 au 
 Jupiter MOID = 2.54795 au 
 T_jup = 3.550 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO396766  
diameter diameter 1.034 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243461 (2009 SF21)          Discovered 2009-Sep-17 by CSS at Catalina
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 SF21 = 2000 CL138 = 2007 CM33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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