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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
85952 (1999 FW12)
Classification: Main-belt Asteroid          SPK-ID: 2085952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2143328697107647 4.5229e-08  
a 2.602982963962968 1.3922e-08 au
q 2.045078155488553 1.1637e-07 au
i 4.014892310860126 4.5413e-06 deg
node 183.1890846062665 7.0353e-05 deg
peri 84.03069520733567 7.1027e-05 deg
M 235.6040646232114 9.9145e-06 deg
tp 2459130.540560770101
(2020-Oct-08.04056077)
4.3377e-05 TDB
period 1533.929555650426
4.20
1.2306e-05
3.369e-08
d
yr
n .2346913511600933 1.8828e-09 deg/d
Q 3.160887772437384 1.6905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      7268 days (19.90 yr)  
   first obs. used      1999-03-17  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57907  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:34:46  

Additional Information
 Earth MOID = 1.03358 au 
 Jupiter MOID = 1.94729 au 
 T_jup = 3.377 
[ 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 15.5   n/a MPO385352  

85952 (1999 FW12)          Discovered 1999-Mar-18 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 FW12 = 2003 EH21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin