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17982 Simcmillan (1999 JK57)
Classification: Main-belt Asteroid          SPK-ID: 2017982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .136276334612695 2.606e-08  
a 2.310631253961051 6.4573e-09 au
q 1.995746896029703 6.0884e-08 au
i 4.674653442708385 3.0457e-06 deg
node 97.53675550340897 4.2784e-05 deg
peri 179.9144092549951 4.5048e-05 deg
M 76.59205667815253 1.3529e-05 deg
tp 2459123.554698524576
(2020-Oct-01.05469852)
4.8278e-05 TDB
period 1282.904687414938
3.51
5.3778e-06
1.472e-08
d
yr
n .2806132080828254 1.1763e-09 deg/d
Q 2.625515611892398 7.3373e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1655  
   data-arc span      15380 days (42.11 yr)  
   first obs. used      1978-07-30  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:56:51  

Additional Information
 Earth MOID = .979125 au 
 Jupiter MOID = 2.47895 au 
 T_jup = 3.568 
[ 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 15.15   n/a E2021B10  
diameter diameter 2.772 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17982 Simcmillan           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Simeon McMillan (b. 1986) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. He was also awarded first place and Best in Category in the 2003 Intel International Science and Engineering Fair for his zoology project. He attends the Uniondale High School, Uniondale, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20

Alternate Designations
 1999 JK57 = 1992 LF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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