Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
18356 (1990 SF1)
Classification: Main-belt Asteroid          SPK-ID: 2018356
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1732618392014101 7.0345e-08  
a 2.846363008363265 3.5971e-08 AU
q 2.353196918499388 1.9968e-07 AU
i 3.598588408599463 7.6696e-06 deg
node 265.2115921438248 0.00013486 deg
peri 145.9507163038865 0.00013793 deg
M 305.4294048504327 3.234e-05 deg
tp 2457066.382679175782
(2015-Feb-12.88267918)
0.00016068 JED
period 1754.017236589376
4.80
3.3249e-05
9.103e-08
d
yr
n .2052431370058866 3.8906e-09 deg/d
Q 3.339529098227143 4.2203e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      13357 days (36.57 yr)  
   first obs. used      1976-12-18  
   last obs. used      2013-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5456  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 18:52:26  

Additional Information
 Earth MOID = 1.36394 AU 
 T_jup = 3.282 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO266052  

18356 (1990 SF1)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar (675)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 SF1 = 1976 YW = 1994 NG11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-19 19:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin