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215043 (2009 DF4)
Classification: Main-belt Asteroid          SPK-ID: 2215043
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612321619427828 3.6016e-08  
a 2.443372123915023 1.5041e-08 au
q 2.049421953945475 8.9203e-08 au
i 9.110092110937856 5.1601e-06 deg
node 180.6882787974634 3.0092e-05 deg
peri 331.3624635126218 3.5115e-05 deg
M 348.4211039450978 1.9177e-05 deg
tp 2459045.369114990575
(2020-Jul-14.86911499)
7.4486e-05 TDB
period 1395.027757397321
3.82
1.2881e-05
3.527e-08
d
yr
n .2580593813213047 2.3828e-09 deg/d
Q 2.837322293884571 1.7466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      449  
   data-arc span      5966 days (16.33 yr)  
   first obs. used      2003-09-26  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:18:22  

Additional Information
 Earth MOID = 1.064 au 
 Jupiter MOID = 2.16874 au 
 T_jup = 3.465 
[ 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 16.3   n/a MPO454544  
diameter diameter 3.077 km 0.528 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215043 (2009 DF4)          Discovered 2009-Feb-19 by Skylive at Skylive
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2009 DF4 = 2003 SA371 = 2007 RA129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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