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385302 (2001 UQ228)
Classification: Main-belt Asteroid          SPK-ID: 2385302
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1584862808486669 5.4222e-08  
a 2.418981279908293 1.0444e-08 au
q 2.035605933413079 1.2912e-07 au
i 5.279816385595142 4.6018e-06 deg
node 140.4424539171317 7.156e-05 deg
peri 242.593254691167 7.5147e-05 deg
M 86.42858292733335 2.0723e-05 deg
tp 2459066.584986367110
(2020-Aug-05.08498637)
7.8628e-05 TDB
period 1374.191278916353
3.76
8.8994e-06
2.437e-08
d
yr
n .2619722636312214 1.6966e-09 deg/d
Q 2.802356626403506 1.2099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      8581 days (23.49 yr)  
   first obs. used      1997-08-11  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:52  

Additional Information
 Earth MOID = 1.0441 au 
 Jupiter MOID = 2.66573 au 
 T_jup = 3.492 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458138.5 (2018-Jan-20.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1599101323821007 5.4416e-08  
q 2.031205827843763 1.2967e-07 au
tp 2457691.371236795691
(2016-Oct-29.87123680)
7.5887e-05 TDB
node 140.5415874274795 7.1654e-05 deg
peri 242.1826549626555 7.5141e-05 deg
i 5.27745075600732 4.5982e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      8581 days (23.49 yr)  
   first obs. used      1997-08-11  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:52  

Additional Information
 Jupiter MOID = 2.66573 au 
 T_jup = 3.492 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.96113941930139E-15 -7.04139176611786E-15 1.729500648900679E-12 3.944455439392845E-14 4.455455083472594E-13 -9.61993730488976E-15
q -7.04139176611786E-15 1.681537068541842E-14 -4.109987120643058E-12 -9.071364083274358E-14 -1.056561673086682E-12 2.280848474021833E-14
tp 1.729500648900679E-12 -4.109987120643058E-12 5.758900088523178E-9 1.291871384109525E-11 1.760241516480169E-9 -1.09299066774995E-11
node 3.944455439392845E-14 -9.071364083274358E-14 1.291871384109525E-11 5.134234603130379E-9 -5.109224322286893E-9 -7.677310749939966E-11
peri 4.455455083472594E-13 -1.056561673086682E-12 1.760241516480169E-9 -5.109224322286893E-9 5.646095431301645E-9 7.318109891384518E-11
i -9.61993730488976E-15 2.280848474021833E-14 -1.09299066774995E-11 -7.677310749939966E-11 7.318109891384518E-11 2.114367576229226E-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 17.81   n/a MPCxxxxx  

385302 (2001 UQ228)          Discovered 2001-Oct-16 by NEAT at Palomar
Reference: Last Updated: 2014-02-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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