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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554946026469161 5.7715e-08  
a 2.726987332873454 1.8782e-08 au
q 2.302955521125123 1.5432e-07 au
i 12.17273805262339 6.1732e-06 deg
node 326.1283218469069 2.2035e-05 deg
peri 191.3994748988949 2.6853e-05 deg
M 100.6047976530585 1.4768e-05 deg
tp 2458540.837262756511
(2019-Feb-26.33726276)
6.6589e-05 TDB
period 1644.837912982226
4.50
1.6993e-05
4.652e-08
d
yr
n .2188665504112138 2.2612e-09 deg/d
Q 3.151019144621785 2.1703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      328  
   data-arc span      7085 days (19.40 yr)  
   first obs. used      2001-01-21  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55061  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:55:00  

Additional Information
 Earth MOID = 1.31417 au 
 Jupiter MOID = 1.86151 au 
 T_jup = 3.306 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457562.5 (2016-Jun-23.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1558779143941143 5.7594e-08  
q 2.300213060590929 1.5428e-07 au
tp 2456895.791687384938
(2014-Aug-26.29168738)
6.5747e-05 TDB
node 326.1843397861833 2.2047e-05 deg
peri 190.8722473121881 2.6844e-05 deg
i 12.17226833296499 6.173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      328  
   data-arc span      7085 days (19.40 yr)  
   first obs. used      2001-01-21  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55061  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:55:00  

Additional Information
 Jupiter MOID = 1.86151 au 
 T_jup = 3.306 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.317094245830223E-15 -8.840424400077704E-15 -2.21284906307042E-13 7.605713197513359E-15 1.512910225846992E-14 -9.246722741259211E-16
q -8.840424400077704E-15 2.380108739640128E-14 5.105535262597632E-13 -2.183336710999725E-14 -3.467321645011178E-14 2.737037321918802E-15
tp -2.21284906307042E-13 5.105535262597632E-13 4.322645393548102E-9 -6.547235655158769E-12 1.018483868744588E-9 6.731094266905271E-12
node 7.605713197513359E-15 -2.183336710999725E-14 -6.547235655158769E-12 4.860536871752447E-10 -4.755982621191572E-10 4.309916458857264E-12
peri 1.512910225846992E-14 -3.467321645011178E-14 1.018483868744588E-9 -4.755982621191572E-10 7.205961717944589E-10 -2.587566664399103E-12
i -9.246722741259211E-16 2.737037321918802E-15 6.731094266905271E-12 4.309916458857264E-12 -2.587566664399103E-12 3.810574812107482E-11

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

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