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305841 (2009 DJ139)
Classification: Main-belt Asteroid          SPK-ID: 2305841
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1241894108791802 1.015e-07  
a 3.081271089709035 6.1291e-08 au
q 2.69860984831902 3.3168e-07 au
i 28.1210306423696 1.0034e-05 deg
node 18.08036715493632 1.6965e-05 deg
peri 350.60178976045 4.1993e-05 deg
M 144.0990696648482 4.2285e-05 deg
tp 2457809.726755415301
(2017-Feb-25.22675542)
0.00021619 TDB
period 1975.573948621659
5.41
5.8945e-05
1.614e-07
d
yr
n .1822255250182707 5.4371e-09 deg/d
Q 3.463932331099049 6.8902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      6755 days (18.49 yr)  
   first obs. used      2000-10-02  
   last obs. used      2019-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68415  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:32:17  

Additional Information
 Earth MOID = 1.70104 au 
 Jupiter MOID = 1.9984 au 
 T_jup = 3.036 
[ 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 15.4   n/a MPO251888  
diameter diameter 5.148 km 0.537 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

305841 (2009 DJ139)          Discovered 2009-Feb-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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