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187307 (2005 UM9)
Classification: Main-belt Asteroid          SPK-ID: 2187307
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442323228756263 5.0862e-08  
a 2.607162916539777 2.1617e-08 au
q 2.231125752972053 1.4063e-07 au
i 12.87003977640849 5.8135e-06 deg
node 195.4662757344637 1.9856e-05 deg
peri 54.21665007636447 3.2809e-05 deg
M 342.6258251300193 3.1134e-05 deg
tp 2459274.708280713166
(2021-Mar-01.20828071)
0.00013363 TDB
period 1537.625887655709
4.21
1.9123e-05
5.236e-08
d
yr
n .2341271715637295 2.9118e-09 deg/d
Q 2.983200080107502 2.4734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      510  
   data-arc span      6312 days (17.28 yr)  
   first obs. used      2003-01-25  
   last obs. used      2020-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:51  

Additional Information
 Earth MOID = 1.24394 au 
 Jupiter MOID = 2.07685 au 
 T_jup = 3.362 
[ 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 15.62   n/a E2021B55  

187307 (2005 UM9)          Discovered 2005-Oct-21 by NEAT at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2005 UM9 = 2003 BJ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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