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447698 (2007 DN21)
Classification: Main-belt Asteroid          SPK-ID: 2447698
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1269998726204479 1.1445e-07  
a 3.053136170902152 6.1464e-08 au
q 2.665388266104697 3.5229e-07 au
i 12.25119448543903 1.384e-05 deg
node 344.5983742414694 3.75e-05 deg
peri 161.6804591877699 5.3764e-05 deg
M 182.6641070734733 4.5193e-05 deg
tp 2459960.368707974625
(2023-Jan-15.86870797)
0.00026421 TDB
period 1948.57752239719
5.33
5.8841e-05
1.611e-07
d
yr
n .1847501553631383 5.5789e-09 deg/d
Q 3.440884075699608 6.927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      4096 days (11.21 yr)  
   first obs. used      2007-01-28  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68846  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 08:56:11  

Additional Information
 Earth MOID = 1.67942 au 
 Jupiter MOID = 1.56416 au 
 T_jup = 3.189 
[ 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 16.4   n/a MPO437740  

447698 (2007 DN21)          Discovered 2007-Jan-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-28

[ show close-approach data ]
Alternate Designations
 2007 DN21 = 2012 AM22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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