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 ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2144820100458616 3.8602e-08  
a 2.602461084611453 1.0603e-08 au
q 2.044280000117855 1.0278e-07 au
i 4.015375584162649 4.4294e-06 deg
node 183.1842062725362 5.5413e-05 deg
peri 84.10627563705943 5.6387e-05 deg
M 329.4395616812819 9.5559e-06 deg
tp 2459130.676284326031
(2020-Oct-08.17628433)
4.0806e-05 TDB
period 1533.468266018541
4.20
9.3711e-06
2.566e-08
d
yr
n .2347619497433064 1.4346e-09 deg/d
Q 3.160642169105051 1.2877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      870  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-03-17  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54753  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:18:18  

Additional Information
 Earth MOID = 1.0332 au 
 Jupiter MOID = 1.94852 au 
 T_jup = 3.378 
[ 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 2020-Oct-20 04:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin