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1752 van Herk (1930 OK)
Classification: Main-belt Asteroid          SPK-ID: 2001752
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2004157494925148 3.9875e-08  
a 2.238920525441941 7.5086e-09 au
q 1.79020559028132 8.8668e-08 au
i 3.502812346324754 5.1776e-06 deg
node 236.9383111997827 6.7176e-05 deg
peri 98.62325274472538 6.8391e-05 deg
M 168.3287682628321 1.349e-05 deg
tp 2456828.346856612973
(2014-Jun-19.84685661)
4.5724e-05 JED
period 1223.647827670881
3.35
6.1556e-06
1.685e-08
d
yr
n .2942022956762259 1.48e-09 deg/d
Q 2.687635460602563 9.0135e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1675  
   data-arc span      31195 days (85.41 yr)  
   first obs. used      1930-07-22  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46365  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:40:27  

Additional Information
 Earth MOID = .782757 au 
 Jupiter MOID = 2.68601 au 
 T_jup = 3.607 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO319104  

1752 van Herk           Discovered 1930 July 22 by H. van Gent at Johannesburg.
Named in honor of G. van Herk, former staff member of the Leiden Observatory and a well-known authority on astrometry. Name proposed by the Leiden Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5357Last Updated: 2006-03-21

Alternate Designations
 1930 OK = 1937 UK = 1947 UA = 1964 WL1 = 1967 RH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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