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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2076425810387423 4.3255e-08  
a 2.35326941046398 9.5985e-09 au
q 1.86463047619572 1.0338e-07 au
i 1.433008892414868 5.5407e-06 deg
node 219.3528641080943 0.00022089 deg
peri 64.18953447805718 0.0002215 deg
M 351.46605710553 1.5011e-05 deg
tp 2459031.757420327204
(2020-Jul-01.25742033)
5.5021e-05 TDB
period 1318.578230126781
3.61
8.0673e-06
2.209e-08
d
yr
n .2730213435765476 1.6704e-09 deg/d
Q 2.84190834473224 1.1592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      9073 days (24.84 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:43:46  

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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