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80168 (1999 TD321)
Classification: Main-belt Asteroid          SPK-ID: 2080168
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631965990689812 5.0565e-08  
a 2.255997195276044 6.8944e-09 au
q 1.887826125497833 1.1425e-07 au
i 6.538056444021007 5.3894e-06 deg
node 195.5464143397133 3.0062e-05 deg
peri 167.9250287953639 3.2983e-05 deg
M 70.36259428066275 1.117e-05 deg
tp 2458758.594577919837
(2019-Oct-02.09457792)
3.8512e-05 TDB
period 1237.67397775997
3.39
5.6736e-06
1.553e-08
d
yr
n .2908681983049798 1.3334e-09 deg/d
Q 2.624168265054255 8.0196e-09 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      7406 days (20.28 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5314  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:54:41  

Additional Information
 Earth MOID = .886358 au 
 Jupiter MOID = 2.83955 au 
 T_jup = 3.597 
[ 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 15.8   n/a MPO502638  
diameter diameter 1.677 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.396   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

80168 (1999 TD321)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 TD321 = 2001 EG19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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