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17963 Vonderheydt (1999 JM40)
Classification: Main-belt Asteroid          SPK-ID: 2017963
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1169889000120987 3.8617e-08  
a 2.330348396391199 8.5666e-09 au
q 2.057723500852435 9.1661e-08 au
i 4.347892919762783 3.5947e-06 deg
node 69.678543004535 5.8262e-05 deg
peri 74.4429648705777 6.0583e-05 deg
M 42.04512050457424 1.728e-05 deg
tp 2458848.745069693057
(2019-Dec-31.24506969)
6.2116e-05 TDB
period 1299.360645299038
3.56
7.1649e-06
1.962e-08
d
yr
n .2770593378385327 1.5278e-09 deg/d
Q 2.602973291929964 9.5688e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1333  
   data-arc span      8604 days (23.56 yr)  
   first obs. used      1996-07-15  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:16:17  

Additional Information
 Earth MOID = 1.07518 au 
 Jupiter MOID = 2.40776 au 
 T_jup = 3.558 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO452425  
diameter diameter 6.263 km 0.371 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17963 Vonderheydt           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Molly von der Heydt (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her physics project. She attends the Falmouth Academy, Falmouth, Massachusetts, 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

Alternate Designations
 1999 JM40 = 1997 XH7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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