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215145 (1999 UM57)
Classification: Main-belt Asteroid          SPK-ID: 2215145
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2076426144202767 4.328e-08  
a 2.353269414954638 1.3372e-08 au
q 1.864630401198182 1.0387e-07 au
i 1.433009533486293 6.6479e-06 deg
node 219.3528173196461 0.00025007 deg
peri 64.1895858535767 0.00025097 deg
M 351.4660472628397 2.3338e-05 deg
tp 2459031.757456467667
(2020-Jul-01.25745647)
8.5648e-05 TDB
period 1318.578233901074
3.61
1.1239e-05
3.077e-08
d
yr
n .2730213427950526 2.3272e-09 deg/d
Q 2.841908428711094 1.6149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      8541 days (23.38 yr)  
   first obs. used      1995-09-18  
   last obs. used      2019-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68498  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:31:04  

Additional Information
 Earth MOID = .848733 au 
 Jupiter MOID = 2.31229 au 
 T_jup = 3.526 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO427265  

215145 (1999 UM57)          Discovered 1999-Oct-29 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 1999 UM57 = 1999 WA23 = 1999 WV26 = 2002 NO46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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