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19565 (1999 KF4)
Classification: Main-belt Asteroid          SPK-ID: 2019565
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3011395023990233 2.0024e-08  
a 3.076370199259818 1.4538e-08 au
q 2.149953608259533 6.3426e-08 au
i 23.40688027545699 1.2161e-06 deg
node 247.2096655667019 1.3281e-06 deg
peri 54.97816407667794 6.4528e-06 deg
M 345.1095973402234 3.9451e-06 deg
tp 2459282.019266176675
(2021-Mar-08.51926618)
2.1955e-05 TDB
period 1970.862473912661
5.40
1.3971e-05
3.825e-08
d
yr
n .1826611469674538 1.2948e-09 deg/d
Q 4.002786790260104 1.8916e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      17503 days (47.92 yr)  
   first obs. used      1972-10-05  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44597  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:58:20  

Additional Information
 Earth MOID = 1.2103 au 
 Jupiter MOID = 1.51492 au 
 T_jup = 3.037 
[ 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 12.64   n/a E2021B10  
diameter diameter 17.066 km 0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.055   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19565 (1999 KF4)          Discovered 1999-May-20 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 KF4 = 1972 TB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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