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129959 (1999 TW272)
Classification: Main-belt Asteroid          SPK-ID: 2129959
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548289084081167 9.4246e-08  
a 2.597471083817322 2.827e-08 au
q 2.195307471288238 2.4295e-07 au
i 14.01596603732659 1.0162e-05 deg
node 14.38230282734902 3.143e-05 deg
peri 297.8046666753144 4.7754e-05 deg
M 32.76692071767705 4.9226e-05 deg
tp 2458861.326150869848
(2020-Jan-12.82615087)
0.00020733 TDB
period 1529.059935736511
4.19
2.4963e-05
6.834e-08
d
yr
n .2354387761959094 3.8437e-09 deg/d
Q 2.999634696346406 3.2647e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      7155 days (19.59 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58681  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:07:06  

Additional Information
 Earth MOID = 1.22164 au 
 Jupiter MOID = 2.45198 au 
 T_jup = 3.358 
[ 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 15.5   n/a MPO436630  
diameter diameter 4.914 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129959 (1999 TW272)          Discovered 1999-Oct-03 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 TW272 = 2002 GC138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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