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91800 (1999 TK234)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091800
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06136353349617853 3.8662e-08  
a 3.20797904045014 2.6033e-08 au
q 3.01112611114644 1.1924e-07 au
i 10.48888523462545 5.1625e-06 deg
node 224.9616081739203 2.2894e-05 deg
peri 271.6914112172409 4.8473e-05 deg
M 99.80321309084883 4.2323e-05 deg
tp 2458418.681223664897
(2018-Oct-27.18122366)
0.00024771 TDB
period 2098.677517425965
5.75
2.5546e-05
6.994e-08
d
yr
n .1715365972193485 2.088e-09 deg/d
Q 3.404831969753842 2.763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      8401 days (23.00 yr)  
   first obs. used      1997-07-08  
   last obs. used      2020-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:27  

Additional Information
 Earth MOID = 2.04883 au 
 Jupiter MOID = 1.71544 au 
 T_jup = 3.163 
[ 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 14.3   n/a MPO395817  
diameter diameter 8.288 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91800 (1999 TK234)          Discovered 1999-Oct-03 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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