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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
186075 (2001 SF221)
Classification: Main-belt Asteroid          SPK-ID: 2186075
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2145732535104504 7.5617e-08  
a 2.452477374131552 1.2048e-08 au
q 1.926241324803378 1.9004e-07 au
i .7130421732670079 4.663e-06 deg
node 36.62804067097845 0.00057424 deg
peri 279.3540394922884 0.00057443 deg
M 85.08495444980022 1.1113e-05 deg
tp 2459064.944519625478
(2020-Aug-03.44451963)
4.4431e-05 TDB
period 1402.832894565983
3.84
1.0337e-05
2.83e-08
d
yr
n .2566235803241405 1.891e-09 deg/d
Q 2.978713423459725 1.4633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      2001-05-23  
   last obs. used      2020-11-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62359  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:49:49  

Additional Information
 Earth MOID = .91217 au 
 Jupiter MOID = 2.31879 au 
 T_jup = 3.463 
[ 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 17.35   n/a E2021B55  

186075 (2001 SF221)          Discovered 2001-Sep-19 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1950-Mar-01 17:02 < 00:01 Juno 0.0465273475874818 0.0465109486016297 0.0465437466428498 7.77970090508225 7.77970087147176 2433342.209774694 0.62745059541928 822.475012116689 90.2162924677553 -6.3253532310852 11954.3356006223 T 12 CATAB v2.0f-lin.ifort 2021-Apr-13 21:49:50 2021-Apr-13 21:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-18 02:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin