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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06136347401558806 4.4614e-08  
a 3.207979032417979 2.9994e-08 au
q 3.011126294419647 1.4666e-07 au
i 10.48888442116858 5.4813e-06 deg
node 224.9616133721798 2.7162e-05 deg
peri 271.6914058484813 5.4903e-05 deg
M 99.80320974325302 4.5558e-05 deg
tp 2458418.681245365384
(2018-Oct-27.18124537)
0.00026802 TDB
period 2098.677509543938
5.75
2.9433e-05
8.058e-08
d
yr
n .1715365978635904 2.4057e-09 deg/d
Q 3.404831770416311 3.1834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      7967 days (21.81 yr)  
   first obs. used      1997-07-08  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53929  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:15:14  

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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