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 ]  
20047 (1993 FD18)
Classification: Main-belt Asteroid          SPK-ID: 2020047
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2748581569456453 4.8563e-08  
a 2.744273320520889 1.6906e-08 au
q 1.989987413487411 1.3559e-07 au
i 10.7066289514074 5.1456e-06 deg
node 47.01140464001077 2.3963e-05 deg
peri 311.9771821400633 2.5088e-05 deg
M 229.5253359431196 1.1827e-05 deg
tp 2459802.315208527453
(2022-Aug-10.81520853)
5.8239e-05 TDB
period 1660.502264067398
4.55
1.5344e-05
4.201e-08
d
yr
n .2168018724155067 2.0034e-09 deg/d
Q 3.498559227554367 2.1553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      12523 days (34.29 yr)  
   first obs. used      1986-12-01  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:12:05  

Additional Information
 Earth MOID = 1.0042 au 
 Jupiter MOID = 2.01962 au 
 T_jup = 3.268 
[ 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 14.05   n/a E2021B10  
diameter diameter 4.677 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.424   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20047 (1993 FD18)          Discovered 1993-Mar-17 by UESAC at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 FD18 = 1986 XQ1 = 1999 VA191 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 12:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin