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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2011253390011091 5.0575e-08  
a 2.237725948864193 8.8199e-09 AU
q 1.787662558807304 1.1389e-07 AU
i 3.504083955411734 6.5489e-06 deg
node 236.9916419194522 9.2366e-05 deg
peri 98.50856543744119 9.3927e-05 deg
M 234.0265076815774 2.0546e-05 deg
tp 2456828.343996588522
(2014-Jun-19.84399659)		 7.0836e-05 JED
period 1222.668641927799
3.35		 7.2287e-06
1.979e-08		 d
yr
n .2944379103666084 1.7408e-09 deg/d
Q 2.687789338921083 1.0594e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      30217 days (82.73 yr)  
   first obs. used      1930-07-22  
   last obs. used      2013-04-14  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .5067  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 12:47:11  

Additional Information
 Earth MOID = .78189 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 13.2 mag n/a PDS3 (MPC 17263)  

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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