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8643 Quercus (1988 SC)
Classification: Main-belt Asteroid          SPK-ID: 2008643
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1546275848555521 4.8951e-08  
a 2.56978719012799 1.2233e-08 au
q 2.172427203325763 1.2664e-07 au
i 12.98212418399295 7.1598e-06 deg
node .2835318104370285 1.5264e-05 deg
peri 70.65797648991979 3.1773e-05 deg
M 188.5289931890512 2.5357e-05 deg
tp 2459717.191681691483
(2022-May-17.69168169)
0.00010734 TDB
period 1504.680063454666
4.12
1.0744e-05
2.942e-08
d
yr
n .2392535188998644 1.7084e-09 deg/d
Q 2.967147176930216 1.4125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1637  
   data-arc span      25080 days (68.67 yr)  
   first obs. used      1951-10-04  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:50:51  

Additional Information
 Earth MOID = 1.22419 au 
 Jupiter MOID = 2.42656 au 
 T_jup = 3.378 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1   n/a MPO272680  
diameter diameter 5.801 km 0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.953 h n/a LCDB (Rev. 2019-August); 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. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.331   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

8643 Quercus           Discovered 1988 Sept. 16 by E. W. Elst at Haute Provence.
Named for Quercus, a genus belonging to the family Fagaceae. The tree Quercus robur (English oak) reaches a height of 30-40 m and an age of more than a thousand years.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1988 SC = 1951 TH = 1982 FE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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