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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1165575367312162 3.6613e-08  
a 2.331643487788319 6.8655e-09 au
q 2.059872866316331 8.5509e-08 au
i 4.346275828228834 3.1013e-06 deg
node 69.66464993707208 5.6049e-05 deg
peri 74.71502624789744 5.8053e-05 deg
M 151.4819180455668 1.4613e-05 deg
tp 2458849.295145211691
(2019-Dec-31.79514521)
5.2561e-05 TDB
period 1300.44397552805
3.56
5.7437e-06
1.573e-08
d
yr
n .2768285345424594 1.2227e-09 deg/d
Q 2.603414109260307 7.6658e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1632  
   data-arc span      9098 days (24.91 yr)  
   first obs. used      1996-07-15  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:31:54  

Additional Information
 Earth MOID = 1.07798 au 
 Jupiter MOID = 2.40533 au 
 T_jup = 3.557 
[ 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 14.95   n/a E2021B10  
diameter diameter 6.263 km 0.371 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.84474 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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