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66796 (1999 TD252)
Classification: Main-belt Asteroid          SPK-ID: 2066796
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2413487014699304 4.2348e-08  
a 2.678416694204179 1.8431e-08 au
q 2.031984303062617 1.199e-07 au
i 6.521907164123883 4.251e-06 deg
node 109.1214871409006 4.733e-05 deg
peri 215.3185639730742 4.8684e-05 deg
M 17.09502600590395 1.5576e-05 deg
tp 2459320.470364791731
(2021-Apr-15.97036479)
6.8765e-05 TDB
period 1601.089619022746
4.38
1.6527e-05
4.525e-08
d
yr
n .2248468766037797 2.3209e-09 deg/d
Q 3.324849085345742 2.288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      8490 days (23.24 yr)  
   first obs. used      1998-04-23  
   last obs. used      2021-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 17:43:11  

Additional Information
 Earth MOID = 1.02303 au 
 Jupiter MOID = 2.02299 au 
 T_jup = 3.326 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457661.5 (2016-Sep-30.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2403822339136022 4.24e-08  
q 2.034723295661373 1.1978e-07 au
tp 2457720.510281583171
(2016-Nov-28.01028158)
6.0224e-05 TDB
node 109.1301490868313 4.7324e-05 deg
peri 215.5541257036533 4.869e-05 deg
i 6.521332218774821 4.2512e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      8490 days (23.24 yr)  
   first obs. used      1998-04-23  
   last obs. used      2021-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 17:43:11  

Additional Information
 Jupiter MOID = 2.02299 au 
 T_jup = 3.326 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.797788911813856E-15 -5.051099457719759E-15 -7.557352472749405E-14 1.38286279277315E-14 2.361060890084004E-14 -3.502517669909028E-16
q -5.051099457719759E-15 1.434663586745078E-14 5.734449844418596E-13 -3.947335555960062E-14 5.041253261410666E-15 2.119489031613793E-15
tp -7.557352472749405E-14 5.734449844418596E-13 3.626896246692583E-9 2.304000671679135E-11 7.302614894601027E-10 5.028657426544229E-12
node 1.38286279277315E-14 -3.947335555960062E-14 2.304000671679135E-11 2.239546769529745E-9 -2.220295691472056E-9 -2.534192166814793E-11
peri 2.361060890084004E-14 5.041253261410666E-15 7.302614894601027E-10 -2.220295691472056E-9 2.370734263264468E-9 2.62219701185802E-11
i -3.502517669909028E-16 2.119489031613793E-15 5.028657426544229E-12 -2.534192166814793E-11 2.62219701185802E-11 1.807262437365062E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.58   n/a MPO636973  
diameter diameter 4.702 km 1.400 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66796 (1999 TD252)          Discovered 1999-Oct-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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