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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2009889181233379 5.0341e-08  
a 2.238070910202977 8.877e-09 AU
q 1.788243459277967 1.134e-07 AU
i 3.503769641436205 6.4757e-06 deg
node 236.9889899492285 9.1371e-05 deg
peri 98.45255695266189 9.2927e-05 deg
M 351.827840411992 2.0775e-05 deg
tp 2456828.261538401315
(2014-Jun-19.76153840)
7.0649e-05 JED
period 1222.95137739832
3.35
7.276e-06
1.992e-08
d
yr
n .2943698389431117 1.7514e-09 deg/d
Q 2.687898361127988 1.0661e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      30234 days (82.78 yr)  
   first obs. used      1930-07-22  
   last obs. used      2013-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5062  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 13:51:19  

Additional Information
 Earth MOID = .781539 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 13.0 mag n/a MPO263360  

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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