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193668 (2001 DJ66)
Classification: Main-belt Asteroid          SPK-ID: 2193668
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554945865202869 6.8331e-08  
a 2.726987333814196 1.9021e-08 au
q 2.302955565896698 1.8514e-07 au
i 12.17274209418594 6.8218e-06 deg
node 326.1283304966972 2.2973e-05 deg
peri 191.3994640658158 2.8403e-05 deg
M 100.6047988393031 1.528e-05 deg
tp 2458540.837257098709
(2019-Feb-26.33725710)
6.9163e-05 TDB
period 1644.837913833367
4.50
1.721e-05
4.712e-08
d
yr
n .2188665502979586 2.2899e-09 deg/d
Q 3.151019101731694 2.1979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      317  
   data-arc span      6670 days (18.26 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55582  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:06:55  

Additional Information
 Earth MOID = 1.31417 au 
 Jupiter MOID = 1.86151 au 
 T_jup = 3.306 
[ 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 15.6   n/a MPO251488  
rotation period rot_per 4.584 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Polishook, D.; Ofek, O.E.; Waszczak, A.; Kulkarni, S.R. (2012) ACM 2012, #6347. Supplemental material.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

193668 (2001 DJ66)          Discovered 2001-Feb-19 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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