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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073388367045139 4.3305e-08  
a 2.352702355289347 1.3502e-08 au
q 1.864895785831683 1.0385e-07 au
i 1.433188294551463 6.6485e-06 deg
node 219.3594305493674 0.00025002 deg
peri 64.20773688881057 0.00025093 deg
M 242.185776134951 2.2784e-05 deg
tp 2459031.864234239594
(2020-Jul-01.36423424)
8.5715e-05 TDB
period 1318.101662360676
3.61
1.1347e-05
3.107e-08
d
yr
n .2731200561231764 2.3511e-09 deg/d
Q 2.84050892474701 1.6301e-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 = .848399 au 
 Jupiter MOID = 2.31247 au 
 T_jup = 3.527 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456798.5 (2014-May-21.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2083257910871014 4.3428e-08  
q 1.862071863543052 1.042e-07 au
tp 2456394.089451164696
(2013-Apr-11.58945116)
7.2501e-05 TDB
node 219.5568376731603 0.00025051 deg
peri 63.77394202208518 0.0002514 deg
i 1.432024731754959 6.6398e-06 deg
  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
 Jupiter MOID = 2.31247 au 
 T_jup = 3.527 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.886026786542562E-15 -4.501627171317864E-15 5.220190824314204E-13 5.850176121310981E-15 1.813221970636543E-13 -1.037744929271658E-15
q -4.501627171317864E-15 1.085687722566878E-14 -8.907398676492716E-13 -1.100118285209947E-14 -3.269853438977092E-13 2.425959863457182E-15
tp 5.220190824314204E-13 -8.907398676492716E-13 5.256427369944166E-9 3.291176912027105E-11 1.569173466798041E-9 -1.917593284210606E-12
node 5.850176121310981E-15 -1.100118285209947E-14 3.291176912027105E-11 6.275697945645682E-8 -6.272579407104994E-8 -7.240435324345861E-10
peri 1.813221970636543E-13 -3.269853438977092E-13 1.569173466798041E-9 -6.272579407104994E-8 6.320101956640671E-8 7.232250494512699E-10
i -1.037744929271658E-15 2.425959863457182E-15 -1.917593284210606E-12 -7.240435324345861E-10 7.232250494512699E-10 4.408697426211892E-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 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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