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118431 (1999 TD187)
Classification: Outer Main-belt Asteroid          SPK-ID: 2118431
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297935315625843 4.9985e-08  
a 3.413262565838618 2.9084e-08 au
q 2.970243163268056 1.6687e-07 au
i 16.18638054902673 5.8291e-06 deg
node 246.354474785113 1.8581e-05 deg
peri 186.7204238437242 3.8406e-05 deg
M 60.50488400723211 2.8952e-05 deg
tp 2458613.384192730014
(2019-May-09.88419273)
0.00018503 TDB
period 2303.31307800767
6.31
2.9439e-05
8.06e-08
d
yr
n .1562965987721454 1.9977e-09 deg/d
Q 3.85628196840918 3.2859e-08 au
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      9663 days (26.46 yr)  
   first obs. used      1993-11-08  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45744  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:21:01  

Additional Information
 Earth MOID = 1.98542 au 
 Jupiter MOID = 1.46668 au 
 T_jup = 3.067 
[ 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 13.9   n/a MPO469225  
diameter diameter 8.796 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118431 (1999 TD187)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 TD187 = 2000 XB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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