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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402877092939995 6.3156e-08  
a 2.227287800782269 1.2938e-08 au
q 1.914826697272055 1.3888e-07 au
i 2.794930467055095 8.2618e-06 deg
node 350.849190443137 0.00011532 deg
peri 336.5010719903529 0.00012014 deg
M 233.3733343636233 3.8311e-05 deg
tp 2459427.556763846502
(2021-Aug-01.05676385)
0.00013146 TDB
period 1214.123693553018
3.32
1.0579e-05
2.896e-08
d
yr
n .2965101512404341 2.5835e-09 deg/d
Q 2.539748904292483 1.4753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6821 days (18.67 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 05:58:20  

Additional Information
 Earth MOID = .903738 au 
 Jupiter MOID = 2.76751 au 
 T_jup = 3.630 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457557.5 (2016-Jun-18.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404821378317644 6.3124e-08  
q 1.914627170837975 1.3876e-07 au
tp 2456997.613418429054
(2014-Dec-06.11341843)
0.00011929 TDB
node 350.8912294119932 0.00011517 deg
peri 336.1875928431336 0.00011998 deg
i 2.797366054106687 8.2632e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6821 days (18.67 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 05:58:20  

Additional Information
 Jupiter MOID = 2.76751 au 
 T_jup = 3.630 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.984645350912056E-15 -8.731783049094746E-15 4.503823486207892E-12 -9.737054139638673E-15 1.264908804170483E-12 -3.936783765566929E-15
q -8.731783049094746E-15 1.925459997102448E-14 -9.351872311693341E-12 2.163590945455116E-14 -2.619532666471104E-12 8.37488551279452E-15
tp 4.503823486207892E-12 -9.351872311693341E-12 1.423038076802476E-8 -2.106896836614771E-11 4.039481430166616E-9 -1.268601404999076E-11
node -9.737054139638673E-15 2.163590945455116E-14 -2.106896836614771E-11 1.326328230459659E-8 -1.325202616249288E-8 4.180915455237985E-10
peri 1.264908804170483E-12 -2.619532666471104E-12 4.039481430166616E-9 -1.325202616249288E-8 1.43942651505119E-8 -4.210995845942826E-10
i -3.936783765566929E-15 8.37488551279452E-15 -1.268601404999076E-11 4.180915455237985E-10 -4.210995845942826E-10 6.827994550489509E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO470086  

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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