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243659 (1999 UT57)
Classification: Main-belt Asteroid          SPK-ID: 2243659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1311093757756448 6.313e-08  
a 2.571595778587502 2.577e-08 au
q 2.234435461309611 1.6317e-07 au
i 16.46665585008352 7.1985e-06 deg
node 79.67025973888289 2.4853e-05 deg
peri 330.437028804138 3.7828e-05 deg
M 353.2649486402334 3.3551e-05 deg
tp 2459028.679993866717
(2020-Jun-28.17999387)
0.00014058 TDB
period 1506.268809265593
4.12
2.2641e-05
6.199e-08
d
yr
n .2390011648555109 3.5925e-09 deg/d
Q 2.908756095865392 2.9148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      6749 days (18.48 yr)  
   first obs. used      1999-10-31  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56168  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 06:25:58  

Additional Information
 Earth MOID = 1.25912 au 
 Jupiter MOID = 2.4405 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456661.5 (2014-Jan-04.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1317925317143103 6.3266e-08  
q 2.232662211473598 1.6361e-07 au
tp 2456010.478577821975
(2012-Mar-23.97857782)
0.00012354 TDB
node 79.735507258155 2.4897e-05 deg
peri 329.3791196654382 3.7652e-05 deg
i 16.45271868553567 7.1927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      6749 days (18.48 yr)  
   first obs. used      1999-10-31  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56168  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 06:25:58  

Additional Information
 Jupiter MOID = 2.4405 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.002641186283243E-15 -1.025200637048394E-14 -9.804911294983207E-13 3.000540777459276E-14 -1.968158124919418E-13 -9.147422475427733E-15
q -1.025200637048394E-14 2.676848214522448E-14 3.065414368255205E-12 -7.57341090340984E-14 6.772699321363822E-13 2.617350398060551E-14
tp -9.804911294983207E-13 3.065414368255205E-12 1.526316652117946E-8 1.800818176426056E-11 3.533293344206522E-9 2.178193788099028E-11
node 3.000540777459276E-14 -7.57341090340984E-14 1.800818176426056E-11 6.19883224763694E-10 -5.896274611686992E-10 -4.224660207111354E-12
peri -1.968158124919418E-13 6.772699321363822E-13 3.533293344206522E-9 -5.896274611686992E-10 1.417707817373703E-9 9.489365680373481E-12
i -9.147422475427733E-15 2.617350398060551E-14 2.178193788099028E-11 -4.224660207111354E-12 9.489365680373481E-12 5.173452751906491E-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 16.0   n/a MPO300152  

243659 (1999 UT57)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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