Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
17982 Simcmillan (1999 JK57)
Classification: Main-belt Asteroid          SPK-ID: 2017982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360383174444371 3.3998e-08  
a 2.310734724633356 8.5344e-09 au
q 1.996386260633799 7.6016e-08 au
i 4.675543672998989 3.5801e-06 deg
node 97.54664025143197 4.9575e-05 deg
peri 180.1525761430128 5.1732e-05 deg
M 325.2880145637199 1.5626e-05 deg
tp 2459124.208778062313
(2020-Oct-01.70877806)
5.5874e-05 TDB
period 1282.990861591154
3.51
7.1079e-06
1.946e-08
d
yr
n .2805943602384908 1.5545e-09 deg/d
Q 2.625083188632912 9.6954e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      15158 days (41.50 yr)  
   first obs. used      1978-07-30  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:16:40  

Additional Information
 Earth MOID = .97995 au 
 Jupiter MOID = 2.48225 au 
 T_jup = 3.568 
[ show covariance matrix ]

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 15.1   n/a MPO467902  
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

[ show close-approach data ]
Alternate Designations
 1999 JK57 = 1992 LF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-06 03:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin