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187388 (2005 UM461)
Classification: Main-belt Asteroid          SPK-ID: 2187388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06990586413963785 4.0465e-08  
a 3.146058801801925 3.0688e-08 au
q 2.926130842627848 1.3698e-07 au
i 10.15713845845288 5.4352e-06 deg
node 56.30082288883995 2.582e-05 deg
peri 224.133143951163 4.9141e-05 deg
M 35.91540870066069 4.0011e-05 deg
tp 2458997.158046092020
(2020-May-27.65804609)
0.00022688 TDB
period 2038.208837242775
5.58
2.9822e-05
8.165e-08
d
yr
n .1766256692748898 2.5843e-09 deg/d
Q 3.365986760976003 3.2833e-08 au
  Orbit Determination Parameters
   # obs. used (total)      332  
   data-arc span      6761 days (18.51 yr)  
   first obs. used      2002-03-11  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48882  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:12  

Additional Information
 Earth MOID = 1.91828 au 
 Jupiter MOID = 1.72143 au 
 T_jup = 3.181 
[ show covariance matrix ]

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 15.36   n/a E2021B55  
diameter diameter 3.677 km 0.694 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187388 (2005 UM461)          Discovered 2005-Oct-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2005 UM461 = 2005 XV115 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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