Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2009889745184543 4.2413e-08  
a 2.238070909146421 9.3995e-09 AU
q 1.788243332217497 9.5983e-08 AU
i 3.503775955859167 5.6325e-06 deg
node 236.9890077879708 7.9148e-05 deg
peri 98.45251728189393 8.0371e-05 deg
M 351.8278622952019 1.77e-05 deg
tp 2456828.261464042485
(2014-Jun-19.76146404)
6.0192e-05 JED
period 1222.951376532317
3.35
7.7043e-06
2.109e-08
d
yr
n .2943698391515624 1.8545e-09 deg/d
Q 2.687898486075345 1.1289e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1214  
   data-arc span      30659 days (83.94 yr)  
   first obs. used      1930-07-22  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49729  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:00:31  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-30 05:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin