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193889 (2001 QW208)
Classification: Main-belt Asteroid          SPK-ID: 2193889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1399913101806406 7.3478e-08  
a 2.227810263673749 1.6242e-08 au
q 1.915936186028183 1.6658e-07 au
i 2.794380124118424 1.0963e-05 deg
node 350.8559700196698 0.00016711 deg
peri 336.4790649299701 0.0001717 deg
M 114.8130646078395 4.2695e-05 deg
tp 2458213.149129666681
(2018-Apr-04.64912967)
0.00014198 TDB
period 1214.550920631669
3.33
1.3282e-05
3.636e-08
d
yr
n .2964058516482533 3.2414e-09 deg/d
Q 2.539684341319316 1.8515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      6270 days (17.17 yr)  
   first obs. used      2001-08-16  
   last obs. used      2018-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67462  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 03:38:49  

Additional Information
 Earth MOID = .903951 au 
 Jupiter MOID = 2.76514 au 
 T_jup = 3.630 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456483.5 (2013-Jul-10.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1408539997514803 7.3652e-08  
q 1.913357088342223 1.6702e-07 au
tp 2456998.133095980509
(2014-Dec-06.63309598)
0.00013478 TDB
node 350.8972461966038 0.00016686 deg
peri 336.3356425953885 0.00017138 deg
i 2.797670812136739 1.0966e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      6270 days (17.17 yr)  
   first obs. used      2001-08-16  
   last obs. used      2018-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67462  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 03:38:49  

Additional Information
 Jupiter MOID = 2.76514 au 
 T_jup = 3.630 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.424588852258934E-15 -1.225990841508161E-14 3.642126932168139E-12 -2.216511551758007E-14 1.159107914230817E-12 -1.472492357800549E-15
q -1.225990841508161E-14 2.789666853763635E-14 -7.367484964651664E-12 5.047348488458123E-14 -2.400065668124445E-12 3.420051322024172E-15
tp 3.642126932168139E-12 -7.367484964651664E-12 1.81663320939116E-8 -7.560417426060556E-11 5.320681174887975E-9 -9.236474112845222E-12
node -2.216511551758007E-14 5.047348488458123E-14 -7.560417426060556E-11 2.784205476133169E-8 -2.782954225725372E-8 9.383855383211694E-10
peri 1.159107914230817E-12 -2.400065668124445E-12 5.320681174887975E-9 -2.782954225725372E-8 2.937115987286416E-8 -9.399045086194158E-10
i -1.472492357800549E-15 3.420051322024172E-15 -9.236474112845222E-12 9.383855383211694E-10 -9.399045086194158E-10 1.202497092607441E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO254287  

193889 (2001 QW208)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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