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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
18671 Zacharyrice (1998 FX64)
Classification: Main-belt Asteroid          SPK-ID: 2018671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108822560874688 1.9275e-08  
a 2.460604445247253 8.5114e-09 au
q 2.187767073019383 4.5922e-08 au
i 5.36247294660177 1.5081e-06 deg
node 10.52470894243968 8.7749e-06 deg
peri 21.80355685762937 1.0041e-05 deg
M 163.7520609994746 6.3962e-06 deg
tp 2458755.223378840464
(2019-Sep-28.72337884)
2.4274e-05 TDB
period 1409.811774022031
3.86
7.3149e-06
2.003e-08
d
yr
n .2553532369594002 1.3249e-09 deg/d
Q 2.733441817475123 9.4551e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2353  
   data-arc span      14397 days (39.42 yr)  
   first obs. used      1982-01-26  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:36:02  

Additional Information
 Earth MOID = 1.1935 au 
 Jupiter MOID = 2.68703 au 
 T_jup = 3.476 
[ 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 14.05   n/a MPO636345  
diameter diameter 5.095 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.306 h n/a LCDB (Rev. 2020-October); 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 0.118   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18671 Zacharyrice           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Zachary Philip Rice (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for his biochemistry project. He attends the Academy of Science & Technology, Conroe, Texas, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 1998 FX64 = 1982 BP7 = 1984 ST7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 09:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin