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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2002114773410988 3.983e-08  
a 2.239047629939646 7.3116e-09 au
q 1.790764596112344 8.8558e-08 au
i 3.504654466298466 4.5262e-06 deg
node 236.8582707593538 6.704e-05 deg
peri 98.81714620685321 6.7971e-05 deg
M 226.9947977467098 1.2839e-05 deg
tp 2458052.626072822018
(2017-Oct-26.12607282)
4.4145e-05 JED
period 1223.752029683485
3.35
5.9943e-06
1.641e-08
d
yr
n .2941772444643964 1.441e-09 deg/d
Q 2.687330663766948 8.7755e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1808  
   data-arc span      31312 days (85.73 yr)  
   first obs. used      1930-07-22  
   last obs. used      2016-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45574  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:35:56  

Additional Information
 Earth MOID = .784572 au 
 Jupiter MOID = 2.68769 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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