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135339 (2001 TM21)
Classification: Main-belt Asteroid          SPK-ID: 2135339
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02118745502675518 4.2227e-08  
a 3.104174409957391 2.2873e-08 au
q 3.038404854251215 1.3019e-07 au
i 16.34975304517782 4.8482e-06 deg
node 30.08295755758333 1.5282e-05 deg
peri 122.5697082484391 0.00014183 deg
M 39.54862327771833 0.00013763 deg
tp 2458981.044501024479
(2020-May-11.54450102)
0.0007641 TDB
period 1997.641715020161
5.47
2.208e-05
6.045e-08
d
yr
n .1802124962114974 1.9919e-09 deg/d
Q 3.169943965663568 2.3358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      8055 days (22.05 yr)  
   first obs. used      1999-04-12  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57017  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:21:10  

Additional Information
 Earth MOID = 2.05742 au 
 Jupiter MOID = 1.81059 au 
 T_jup = 3.158 
[ 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 14.59   n/a E2021B55  
diameter diameter 3.776 km 0.641 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

135339 (2001 TM21)          Discovered 2001-Oct-11 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2001 TM21 = 1999 GG33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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