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305454 (2008 DP4)
Classification: Main-belt Asteroid          SPK-ID: 2305454
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08733796821379641 7.9017e-08  
a 3.093561202537315 4.2391e-08 au
q 2.823375852562677 2.4044e-07 au
i 9.364487317101931 9.8281e-06 deg
node 20.27286924416562 4.3273e-05 deg
peri 134.0247781736103 7.9384e-05 deg
M 91.59827762863486 6.0124e-05 deg
tp 2458494.825210603910
(2019-Jan-11.32521060)
0.00033228 TDB
period 1987.405537477958
5.44
4.085e-05
1.118e-07
d
yr
n .1811406847828574 3.7233e-09 deg/d
Q 3.363746552511953 4.6093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      5840 days (15.99 yr)  
   first obs. used      2003-04-08  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59933  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:20:04  

Additional Information
 Earth MOID = 1.84162 au 
 Jupiter MOID = 1.63299 au 
 T_jup = 3.198 
[ 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 16.2   n/a MPO427632  
rotation period rot_per 0.0607 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Hergenrother, C.W.; Kwiatkowski, T.; Kyrszczynska, A.; Pretka-Ziomek, H.; et al. (2012) ACM 2012, #6484.]

305454 (2008 DP4)          Discovered 2008-Feb-27 by Apitzsch, R. at Wildberg
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 DP4 = 2003 HC33 = 2006 WW116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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