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27963 Hartkopf (1997 ST2)
Classification: Main-belt Asteroid          SPK-ID: 2027963
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06410905506842191 5.3074e-08  
a 2.87023030751911 2.3302e-08 au
q 2.686222554675314 1.5508e-07 au
i 1.216380689355606 6.0127e-06 deg
node 228.4849926320326 0.00028377 deg
peri 180.1607547197621 0.00028917 deg
M 221.3968515166022 6.0536e-05 deg
tp 2459684.323687806363
(2022-Apr-14.82368781)
0.00030392 TDB
period 1776.125075829561
4.86
2.163e-05
5.922e-08
d
yr
n .202688428252643 2.4683e-09 deg/d
Q 3.054238060362906 2.4796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1997-09-25  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:06:26  

Additional Information
 Earth MOID = 1.69607 au 
 Jupiter MOID = 2.19503 au 
 T_jup = 3.295 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO250480  

27963 Hartkopf           Discovered 1997 Sept. 25 by P. Pravec and M. Wolf at Ondrejov.
US astronomer William I. Hartkopf (b. 1951), president of IAU Commission 26 (Double and Multiple Stars) from 2003 to 2006, made important contributions to double-star orbit determinations and speckle interferometric observations. In 2009 he was awarded the Simon Newcomb award of the U.S. Naval 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 batch dated 2018-05-29Last Updated: 2018-05-31

Alternate Designations
 1997 ST2 = 1999 CP118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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