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9564 Jeffwynn (1987 SG3)
Classification: Mars-crossing Asteroid          SPK-ID: 2009564
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3176024775213117 1.9684e-08  
a 2.340405712171339 5.6296e-09 au
q 1.597087059580692 4.6818e-08 au
i 22.30029827556213 1.6156e-06 deg
node 187.0801564051752 1.38e-06 deg
peri 121.5992021911301 3.5982e-06 deg
M 130.1155695517566 3.6452e-06 deg
tp 2458727.825778799218
(2019-Sep-01.32577880)		 1.2623e-05 TDB
period 1307.781384030257
3.58		 4.7186e-06
1.292e-08		 d
yr
n .2752753666599608 9.9321e-10 deg/d
Q 3.083724364761987 7.4175e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1670  
   data-arc span      25430 days (69.62 yr)  
   first obs. used      1951-07-11  
   last obs. used      2021-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 21:29:04  

Additional Information
 Earth MOID = .678683 au 
 Jupiter MOID = 2.59369 au 
 T_jup = 3.400 
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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO435790  
rotation period rot_per 3.035 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2013). Minor Planet Bull. 40, 26-29.]
[Benishek, V. (2019) Minor Planet Bull. 46, 506-508.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
[Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 46, 449-456.]

9564 Jeffwynn           Discovered 1987 Sept. 26 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Jeffrey C. Wynn, a humorous, curious, inventive, adventurous geophysicist with the U.S. Geological Survey has studied the Wabar Craters of Saudi Arabia with Gene Shoemaker, mapped the seafloor, analyzed mineral resources on land, studied aquifers and archaeological sites---and observed with the Shoemaker-Levy team.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1987 SG3 = 1951 NQ 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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