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17951 Fenska (1999 JO19)
Classification: Main-belt Asteroid          SPK-ID: 2017951
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1035198849780157 3.7267e-08  
a 2.2803985737054 7.3627e-09 au
q 2.044331975651386 8.4945e-08 au
i 3.28267989301262 3.4314e-06 deg
node 294.6717444497812 6.6058e-05 deg
peri 35.6483995125917 6.78e-05 deg
M 359.3134907652195 1.5578e-05 deg
tp 2459202.898603432304
(2020-Dec-19.39860343)
5.4429e-05 TDB
period 1257.80862351485
3.44
6.0916e-06
1.668e-08
d
yr
n .286212062208643 1.3861e-09 deg/d
Q 2.516465171759414 8.1249e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      12496 days (34.21 yr)  
   first obs. used      1986-09-29  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50349  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:18:22  

Additional Information
 Earth MOID = 1.03224 au 
 Jupiter MOID = 2.75782 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 14.58   n/a E2021B10  
diameter diameter 3.380 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17951 Fenska           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kristen Elaine Fenska (b. 1988) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her environmental science project. She attends the Miami High School, Miami, Oklahoma, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

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Alternate Designations
 1999 JO19 = 1986 SR1 = 1998 AE8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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