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21810 (1999 TK19)
Classification: Main-belt Asteroid          SPK-ID: 2021810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1422407119758423 4.0053e-08  
a 2.590397997153848 9.1125e-09 au
q 2.221937941737889 1.0031e-07 au
i 3.296152316726585 4.4502e-06 deg
node 45.29978991910571 5.8838e-05 deg
peri 314.8768112817061 6.0572e-05 deg
M 47.66521941495137 1.3752e-05 deg
tp 2458998.873660299673
(2020-May-29.37366030)
5.8067e-05 TDB
period 1522.818591481178
4.17
8.0355e-06
2.2e-08
d
yr
n .2364037331917808 1.2474e-09 deg/d
Q 2.958858052569807 1.0409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1611  
   data-arc span      9250 days (25.33 yr)  
   first obs. used      1995-11-15  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:53:40  

Additional Information
 Earth MOID = 1.21866 au 
 Jupiter MOID = 2.49138 au 
 T_jup = 3.403 
[ 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 14.39   n/a E2021B10  
diameter diameter 3.731 km 0.602 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21810 (1999 TK19)          Discovered 1999-Oct-09 by Uto, F. at Uto
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TK19 = 1998 KV36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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