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52404 (1993 TD20)
Classification: Main-belt Asteroid          SPK-ID: 2052404
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08353580926480937 4.0719e-08  
a 2.643307745615469 1.3228e-08 au
q 2.422496893949542 1.0628e-07 au
i 3.204129846854452 3.7838e-06 deg
node 66.22797468608415 8.0754e-05 deg
peri 271.6203763783699 8.4101e-05 deg
M 153.017440195245 2.5289e-05 deg
tp 2458533.296291757768
(2019-Feb-18.79629176)
0.00010863 TDB
period 1569.712149547955
4.30
1.1783e-05
3.226e-08
d
yr
n .2293414114834192 1.7215e-09 deg/d
Q 2.864118597281396 1.4333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      10022 days (27.44 yr)  
   first obs. used      1993-10-09  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54883  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:18:19  

Additional Information
 Earth MOID = 1.41392 au 
 Jupiter MOID = 2.42415 au 
 T_jup = 3.387 
[ 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 15.23   n/a MPCxxxxx  
diameter diameter 2.276 km 0.516 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52404 (1993 TD20)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 TD20 = 2000 GG115 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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