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JPL Small-Body Database Browser
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15735 Andakerkhoven (1990 WF2)
Classification: Main-belt Asteroid          SPK-ID: 2015735
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07454097844734529 4.0129e-08  
a 3.177031706173057 1.9217e-08 au
q 2.940212654236678 1.2814e-07 au
i 10.45901692303639 4.1348e-06 deg
node 95.45835560279409 2.4993e-05 deg
peri 257.6247908595294 3.7387e-05 deg
M 132.4177898805092 2.8368e-05 deg
tp 2458239.692851327274
0.00016235 TDB
period 2068.382003425175
n .1740490873561322 1.5791e-09 deg/d
Q 3.413850758109435 2.0649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1672  
   data-arc span      11506 days (31.50 yr)  
   first obs. used      1988-08-04  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:26:44  

Additional Information
 Earth MOID = 1.95725 au 
 Jupiter MOID = 1.94989 au 
 T_jup = 3.170 
[ 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 13.1   n/a MPO502290  
diameter diameter 11.773 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 22.5355 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.053   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

15735 Andakerkhoven           Discovered 1990 Nov. 18 by E. W. Elst at the European Southern Observatory.
Melisande T. M. "Anda" Kerkhoven (1919-1945), a medical student at Groningen University, was active in the Dutch Resistance during World War II. Providing help and shelter for allied aircraft pilots, she was finally captured and shot by Dutch Nazi collaborators.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080618/MPCPages.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1990 WF2 = 1988 PD3 = 1999 JR82 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Apr-10 06:47 UT
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