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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2008771912929394 4.0273e-08  
a 2.237756562032655 7.8565e-09 AU
q 1.788242309054191 8.9803e-08 AU
i 3.50392124922688 5.3927e-06 deg
node 236.9862895046573 7.019e-05 deg
peri 98.44571140492572 7.1418e-05 deg
M 50.71988948957737 1.4045e-05 deg
tp 2456828.236413973496
(2014-Jun-19.73641397)
4.7663e-05 JED
period 1222.693732057228
3.35
6.4391e-06
1.763e-08
d
yr
n .2944318683913481 1.5506e-09 deg/d
Q 2.687270815011119 9.4347e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1436  
   data-arc span      30865 days (84.50 yr)  
   first obs. used      1930-07-22  
   last obs. used      2015-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46665  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:59:49  

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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