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
JPL Small-Body Database Browser
Search: [ help ]  
18684 (1998 FW116)
Classification: Main-belt Asteroid          SPK-ID: 2018684
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1169847435757822 4.9686e-08  
a 2.988080133304338 1.7158e-08 au
q 2.638520345125841 1.5573e-07 au
i 10.04268313760667 3.5048e-06 deg
node 236.2451948599286 2.4793e-05 deg
peri 96.64797645094556 3.4933e-05 deg
M 20.72311145592435 2.0301e-05 deg
tp 2459091.897643470787
(2020-Aug-30.39764347)		 0.00010681 TDB
period 1886.630221222858
5.17		 1.625e-05
4.449e-08		 d
yr
n .1908164069197718 1.6435e-09 deg/d
Q 3.337639921482836 1.9165e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1753  
   data-arc span      9209 days (25.21 yr)  
   first obs. used      1995-11-27  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:53  

Additional Information
 Earth MOID = 1.65109 au 
 Jupiter MOID = 2.05414 au 
 T_jup = 3.224 
[ 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 13.51   n/a E2021B10  
diameter diameter 7.496 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18684 (1998 FW116)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FW116 = 1999 NG47 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 23:50 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin