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12625 Koopman (9578 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012625
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004380737277408 4.9755e-08  
a 3.116864157993129 2.7094e-08 au
q 2.803812325893262 1.6578e-07 au
i 5.905760432273193 6.5864e-06 deg
node 3.048610102208418 4.7523e-05 deg
peri 78.35504894253181 5.8584e-05 deg
M 350.9281598043686 3.447e-05 deg
tp 2457651.148679817101
0.00019262 JED
period 2009.903651404376
n .1791130633294078 2.3354e-09 deg/d
Q 3.429915990092995 2.9815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1183  
   data-arc span      20204 days (55.32 yr)  
   first obs. used      1960-10-17  
   last obs. used      2016-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50197  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:14:03  

Additional Information
 Earth MOID = 1.8256 au 
 Jupiter MOID = 1.805 au 
 T_jup = 3.201 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO350902  
rotation period rot_per 12.9826 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

12625 Koopman           Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Elizabetha Koopman (1647-1693), daughter of a Dutch merchant, was the second wife of Polish astronomer Johannes Hevelius. She assisted her husband with his astronomical observations, and after his death in 1687 she prepared his star atlas and catalogue for publication. The name was suggested by R. H. van Gent.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 9578 P-L = 1982 SH10 = 1982 UV11 = 1984 BS1 = 1993 SD14 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-04 13:36 UT
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