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9663 Zwin (1996 GC18)
Classification: Main-belt Asteroid          SPK-ID: 2009663
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09256305116777004 5.29e-08  
a 2.644869070374954 2.043e-08 AU
q 2.400051919281785 1.3644e-07 AU
i .8804212765390573 5.6327e-06 deg
node 123.9928131488251 0.00039293 deg
peri 1.94363943796106 0.00039463 deg
M 196.6083153899918 3.6776e-05 deg
tp 2457713.569964026261
(2016-Nov-21.06996403)
0.00016372 JED
period 1571.103129649292
4.30
1.8204e-05
4.984e-08
d
yr
n .2291383634888186 2.6549e-09 deg/d
Q 2.889686221468123 2.2321e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      9998 days (27.37 yr)  
   first obs. used      1987-04-01  
   last obs. used      2014-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53265  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:27  

Additional Information
 Earth MOID = 1.41553 AU 
 T_jup = 3.387 
[ 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 14.5 mag n/a PDS3 (MPC 32904)  

9663 Zwin           Discovered 1996 Apr. 15 by E. W. Elst at the European Southern Observatory.
The Zwin is a naturally protected reserve, the result of the silting up of the bay that stretched to Bruges in medieval times. Extending along the coast from Knokke in Belgium to Cadzand in the Netherlands, it gives shelter to many species of birds.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1996 GC18 = 1987 GB1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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