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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2008771864708227 4.0438e-08  
a 2.237756563188327 7.9107e-09 AU
q 1.788242320768438 9.0243e-08 AU
i 3.503921368398361 5.3951e-06 deg
node 236.9862778481649 7.1275e-05 deg
peri 98.44572346650006 7.249e-05 deg
M 50.71988812036612 1.4101e-05 deg
tp 2456828.236418490400
(2014-Jun-19.73641849)
4.7845e-05 JED
period 1222.693733004404
3.35
6.4836e-06
1.775e-08
d
yr
n .2944318681632625 1.5613e-09 deg/d
Q 2.687270805608216 9.4998e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1397  
   data-arc span      30835 days (84.42 yr)  
   first obs. used      1930-07-22  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46885  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:53:25  

Additional Information
 Earth MOID = .783312 AU 
 T_jup = 3.608 
[ 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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