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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733226771133321 6.3245e-08  
a 2.847162175804086 2.4875e-08 au
q 2.353684405317902 1.845e-07 au
i 3.597400586732835 6.213e-06 deg
node 265.1914945787034 0.00012332 deg
peri 146.1742759949183 0.00012529 deg
M 68.40145077337775 2.1441e-05 deg
tp 2457067.089289201635
(2015-Feb-13.58928920)
0.00010361 JED
period 1754.755996112978
4.80
2.2997e-05
6.296e-08
d
yr
n .2051567287973079 2.6886e-09 deg/d
Q 3.34063994629027 2.9187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      975  
   data-arc span      14246 days (39.00 yr)  
   first obs. used      1976-12-18  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49495  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:39:33  

Additional Information
 Earth MOID = 1.36449 au 
 Jupiter MOID = 2.03745 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 14.0 mag n/a MPO319314  

18356 (1990 SF1)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar
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 2016-Feb-11 04:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin