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385422 (2003 DF4)
Classification: Main-belt Asteroid          SPK-ID: 2385422
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988695194815438 7.1299e-08  
a 3.194732063544194 3.3006e-08 au
q 2.559397233194879 2.3558e-07 au
i 28.33558979802015 1.1602e-05 deg
node 142.1035337533079 1.3869e-05 deg
peri 51.90358509003142 3.2485e-05 deg
M 15.78999439551478 2.6746e-05 deg
tp 2459109.019282385013
(2020-Sep-16.51928238)
0.00015459 TDB
period 2085.691578886822
5.71
3.2322e-05
8.849e-08
d
yr
n .1726046188440477 2.6749e-09 deg/d
Q 3.830066893893509 3.957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      161  
   data-arc span      6345 days (17.37 yr)  
   first obs. used      2003-01-28  
   last obs. used      2020-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58167  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:05:20  

Additional Information
 Earth MOID = 1.64199 au 
 Jupiter MOID = 1.42411 au 
 T_jup = 2.981 
[ 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 15.84   n/a E2021B25  
diameter diameter 3.667 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

385422 (2003 DF4)          Discovered 2003-Feb-21 by NEAT at Palomar
Reference: Last Updated: 2014-02-19

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