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187015 (2004 UM2)
Classification: Main-belt Asteroid          SPK-ID: 2187015
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07511231049916901 3.8778e-08  
a 3.09300309100702 2.8146e-08 au
q 2.860680482460411 1.2563e-07 au
i 10.83685159931289 4.111e-06 deg
node 66.2466852771457 2.4469e-05 deg
peri 254.3169562623385 4.6608e-05 deg
M 38.14695714429815 3.5858e-05 deg
tp 2458989.964004307001
(2020-May-20.46400431)
0.00019922 TDB
period 1986.867737911
5.44
2.7121e-05
7.425e-08
d
yr
n .1811897154153328 2.4732e-09 deg/d
Q 3.325325699553629 3.026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      6827 days (18.69 yr)  
   first obs. used      2002-03-20  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:39  

Additional Information
 Earth MOID = 1.86993 au 
 Jupiter MOID = 1.90714 au 
 T_jup = 3.193 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457681.5 (2016-Oct-20.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07785030308110115 3.8957e-08  
q 2.851874770946912 1.2756e-07 au
tp 2457011.847518098211
(2014-Dec-20.34751810)
0.00020598 TDB
node 66.29986855988284 2.4431e-05 deg
peri 256.1058264154677 4.5416e-05 deg
i 10.84818312716996 4.1171e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      6827 days (18.69 yr)  
   first obs. used      2002-03-20  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:39  

Additional Information
 Jupiter MOID = 1.90714 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.517672065908928E-15 -4.865396317317895E-15 2.547789369441382E-12 1.732772689552533E-15 4.650015413177581E-13 -4.286851413574967E-15
q -4.865396317317895E-15 1.627257306217644E-14 -1.105629179193409E-11 -3.859913776219785E-15 -1.99542107252175E-12 1.544121961798512E-14
tp 2.547789369441382E-12 -1.105629179193409E-11 4.242967237235535E-8 -2.764449975335333E-11 7.911643075978892E-9 -1.823232332292534E-11
node 1.732772689552533E-15 -3.859913776219785E-15 -2.764449975335333E-11 5.968753251069089E-10 -5.912021353455483E-10 -2.215252999299704E-11
peri 4.650015413177581E-13 -1.99542107252175E-12 7.911643075978892E-9 -5.912021353455483E-10 2.062575898294723E-9 1.846579063120766E-11
i -4.286851413574967E-15 1.544121961798512E-14 -1.823232332292534E-11 -2.215252999299704E-11 1.846579063120766E-11 1.695016296692536E-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 15.06   n/a MPCxxxxx  

187015 (2004 UM2)          Discovered 2004-Oct-18 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2004 UM2 = 2002 GR108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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