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54686 (2001 DU8)
Classification: Amor [NEO]          SPK-ID: 2054686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 199 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3419708088259805 3.0879e-08  
a 1.776585967407961 4.3577e-09 au
q 1.169045427184574 5.4704e-08 au
i 33.20448213095585 7.4743e-06 deg
node 161.7118465397489 6.8843e-06 deg
peri 265.9189674365044 1.3655e-05 deg
M 101.4775053749002 1.1689e-05 deg
tp 2458756.693629257985
(2019-Sep-30.19362926)
2.7634e-05 TDB
period 864.9236413810677
2.37
3.1823e-06
8.713e-09
d
yr
n .416221713427985 1.5314e-09 deg/d
Q 2.384126507631349 5.8479e-09 au
  Orbit Determination Parameters
   # obs. used (total)      870  
   data-arc span      11499 days (31.48 yr)  
   first obs. used      1988-12-03  
   last obs. used      2020-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-30 06:47:57  

Additional Information
 Earth MOID = .433902 au 
 Jupiter MOID = 3.32926 au 
 T_jup = 3.848 
[ 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 16.5   n/a MPO309566  
diameter diameter 1.349 km 0.461 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 12.552 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2015) Minor Planet Bull. 42, 41-53.]
geometric albedo albedo 0.244   0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B S   n/a Binzel et al. (2004) Icarus 170, 259-294  

54686 (2001 DU8)          Discovered 2001-Feb-17 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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