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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2075554331509077 4.3221e-08  
a 2.352764184807467 9.6939e-09 au
q 1.864435195327811 1.0328e-07 au
i 1.433035243726823 5.3049e-06 deg
node 219.3281695467454 0.00022009 deg
peri 64.13395746684621 0.00022062 deg
M 46.13716463863426 1.4484e-05 deg
tp 2459031.567025808170
(2020-Jul-01.06702581)
5.2756e-05 TDB
period 1318.153622689959
3.61
8.1467e-06
2.23e-08
d
yr
n .2731092899971303 1.6879e-09 deg/d
Q 2.841093174287123 1.1706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      9073 days (24.84 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:49:32  

Additional Information
 Earth MOID = .846628 au 
 Jupiter MOID = 2.31197 au 
 T_jup = 3.527 
[ 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 17.66   n/a E2021B55  

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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