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249654 (1999 TR317)
Classification: Main-belt Asteroid          SPK-ID: 2249654
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1715067060609139 5.2585e-08  
a 3.093397929634684 4.7529e-08 au
q 2.562859440187389 1.7091e-07 au
i 2.777251834726334 7.8507e-06 deg
node 217.3164276276719 0.00021941 deg
peri 208.0019300588338 0.00022634 deg
M 174.1831967778088 5.8848e-05 deg
tp 2457638.985431757623
(2016-Sep-07.48543176)
0.00030802 TDB
period 1987.248201724101
5.44
4.58e-05
1.254e-07
d
yr
n .1811550261752259 4.1751e-09 deg/d
Q 3.62393641908198 5.5681e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6734 days (18.44 yr)  
   first obs. used      1999-10-12  
   last obs. used      2018-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66887  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:57:12  

Additional Information
 Earth MOID = 1.57655 au 
 Jupiter MOID = 1.69654 au 
 T_jup = 3.200 
[ 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 16.3   n/a MPO440260  
diameter diameter 3.131 km 0.621 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249654 (1999 TR317)          Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1999 TR317 = 2005 WG194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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