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 ]  
226155 (2002 SF21)
Classification: Main-belt Asteroid          SPK-ID: 2226155
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687587650306424 3.5292e-08  
a 2.356095116192936 1.1055e-08 au
q 1.958483414089489 8.5759e-08 au
i 2.890395642660272 4.9256e-06 deg
node 44.3579738313261 8.7901e-05 deg
peri 41.75485740471439 8.9283e-05 deg
M 257.8573579824218 1.6499e-05 deg
tp 2459375.293665202859
(2021-Jun-09.79366520)
6.1439e-05 TDB
period 1320.953881825468
3.62
9.2974e-06
2.545e-08
d
yr
n .272530332022269 1.9182e-09 deg/d
Q 2.753706818296384 1.2921e-08 au
  Orbit Determination Parameters
   # obs. used (total)      423  
   data-arc span      7576 days (20.74 yr)  
   first obs. used      2000-02-03  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:34:19  

Additional Information
 Earth MOID = .975819 au 
 Jupiter MOID = 2.45698 au 
 T_jup = 3.533 
[ 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 16.7   n/a MPO338624  

226155 (2002 SF21)          Discovered 2002-Sep-26 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2002 SF21 = 2006 XG33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-27 04:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin