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227841 (2007 DY4)
Classification: Main-belt Asteroid          SPK-ID: 2227841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1728546361786918 5.6225e-08  
a 2.324025656646319 1.437e-08 au
q 1.922307047296774 1.312e-07 au
i 5.323265549512098 6.2131e-06 deg
node 154.4409302284572 5.2641e-05 deg
peri 52.39969453372891 5.6768e-05 deg
M 265.5087145426597 1.8487e-05 deg
tp 2459540.163640960472
(2021-Nov-21.66364096)
6.762e-05 TDB
period 1294.076063776007
3.54
1.2003e-05
3.286e-08
d
yr
n .2781907571565383 2.5802e-09 deg/d
Q 2.725744265995864 1.6854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      7656 days (20.96 yr)  
   first obs. used      2000-02-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 22:50:57  

Additional Information
 Earth MOID = .923032 au 
 Jupiter MOID = 2.23908 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 17.5   n/a MPO440187  

227841 (2007 DY4)          Discovered 2007-Feb-17 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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