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115781 (2003 UH217)
Classification: Main-belt Asteroid          SPK-ID: 2115781
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1333947453607073 5.3922e-08  
a 2.642111119848165 1.2668e-08 au
q 2.289667379801326 1.4483e-07 au
i 5.392311892535879 4.5552e-06 deg
node 62.07417975052878 5.4856e-05 deg
peri 330.336255763411 5.7283e-05 deg
M 41.5976092923844 1.4616e-05 deg
tp 2459215.244615916875
(2020-Dec-31.74461592)
6.3917e-05 TDB
period 1568.646356844149
4.29
1.1282e-05
3.089e-08
d
yr
n .2294972339873081 1.6506e-09 deg/d
Q 2.994554859895005 1.4358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7700 days (21.08 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:35:54  

Additional Information
 Earth MOID = 1.29714 au 
 Jupiter MOID = 2.43077 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457749.5 (2016-Dec-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358129857059242 5.4339e-08  
q 2.282812681440853 1.4643e-07 au
tp 2457643.534429034392
(2016-Sep-12.03442903)
6.4297e-05 TDB
node 62.11355684737681 5.4759e-05 deg
peri 329.7141209200789 5.7054e-05 deg
i 5.399162092031198 4.5669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7700 days (21.08 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:35:54  

Additional Information
 Jupiter MOID = 2.43077 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.952715575029295E-15 -7.935458175170277E-15 -7.862052742722741E-13 -1.097545268096907E-14 -1.258470193023715E-13 -5.558191401147517E-15
q -7.935458175170277E-15 2.144164126854157E-14 1.846762604403908E-12 2.966401819575104E-14 2.737360166505542E-13 1.493071691307509E-14
tp -7.862052742722741E-13 1.846762604403908E-12 4.134140820782462E-9 -1.03374983272578E-11 1.062551811123091E-9 4.125407617409701E-12
node -1.097545268096907E-14 2.966401819575104E-14 -1.03374983272578E-11 2.998503652615653E-9 -2.987738731124579E-9 -1.378718577207415E-10
peri -1.258470193023715E-13 2.737360166505542E-13 1.062551811123091E-9 -2.987738731124579E-9 3.255195079083539E-9 1.382353990783516E-10
i -5.558191401147517E-15 1.493071691307509E-14 4.125407617409701E-12 -1.378718577207415E-10 1.382353990783516E-10 2.085620558422886E-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 15.95   n/a E2021B55  

115781 (2003 UH217)          Discovered 2003-Oct-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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