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129517 (1995 UM31)
Classification: Main-belt Asteroid          SPK-ID: 2129517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0638324786621233 5.0167e-08  
a 2.643734312617216 1.7978e-08 au
q 2.474978198518755 1.275e-07 au
i 15.20088295434738 7.0675e-06 deg
node 25.77626750571305 1.9007e-05 deg
peri 97.11334358352607 5.9093e-05 deg
M 172.3770035343572 5.8759e-05 deg
tp 2458248.700617475385
(2018-May-10.20061748)
0.00025326 TDB
period 1570.092136187512
4.30
1.6016e-05
4.385e-08
d
yr
n .2292859073061468 2.3388e-09 deg/d
Q 2.812490426715678 1.9126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      8608 days (23.57 yr)  
   first obs. used      1995-10-15  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54316  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:06:36  

Additional Information
 Earth MOID = 1.54098 au 
 Jupiter MOID = 2.25677 au 
 T_jup = 3.341 
[ 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 15.2   n/a MPO251192  
diameter diameter 2.760 km 0.359 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129517 (1995 UM31)          Discovered 1995-Oct-21 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1995 UM31 = 2004 TX301 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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