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JPL Small-Body Database Browser
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18520 Wolfratshausen (1996 VK4)
Classification: Main-belt Asteroid          SPK-ID: 2018520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1863769542193256 5.9366e-08  
a 2.678680233713026 1.381e-08 au
q 2.179435970426081 1.6383e-07 au
i 3.567381978114513 4.6909e-06 deg
node 237.2834889874945 8.3763e-05 deg
peri 276.9388792890835 8.4789e-05 deg
M 55.09652570970243 1.5277e-05 deg
tp 2458755.423624138560
(2019-Sep-28.92362414)
6.6839e-05 TDB
period 1601.325930694422
4.38
1.2383e-05
3.39e-08
d
yr
n .2248136953879742 1.7385e-09 deg/d
Q 3.177924496999971 1.6384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      848  
   data-arc span      10343 days (28.32 yr)  
   first obs. used      1991-10-07  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55828  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:27:32  

Additional Information
 Earth MOID = 1.19302 au 
 Jupiter MOID = 1.84288 au 
 T_jup = 3.350 
[ 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 15.1   n/a MPO337414  
diameter diameter 5.096 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18520 Wolfratshausen           Discovered 1996 Nov. 6 by N. Sato at Chichibu.
Wolfratshausen, a city in southern Bavaria, has a long history extending back to the original name found in court papers by Holy Roman Emperor Heinrich II in 1003. Rainer Maria Rilke (1875-1926) stayed in the city with Lou Andreas-Salome (1861-1937) in 1897.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 1996 VK4 = 1998 HK150 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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