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 ]  
18746 (1999 FT20)
Classification: Main-belt Asteroid          SPK-ID: 2018746
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .28735055005113 4.7817e-08  
a 2.436865760140957 1.1674e-08 au
q 1.736631043563688 1.1326e-07 au
i 4.318095799758296 5.4015e-06 deg
node 6.495986821092874 4.5689e-05 deg
peri 297.3850373799423 4.6571e-05 deg
M 215.0856305237275 1.1231e-05 deg
tp 2459955.812836080519
(2023-Jan-11.31283608)
4.6106e-05 TDB
period 1389.459318055792
3.80
9.9846e-06
2.734e-08
d
yr
n .2590935879315501 1.8618e-09 deg/d
Q 3.137100476718226 1.5029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      9524 days (26.08 yr)  
   first obs. used      1995-03-10  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:03:27  

Additional Information
 Earth MOID = .72639 au 
 Jupiter MOID = 2.13991 au 
 T_jup = 3.443 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.70   n/a MPCxxxxx  

18746 (1999 FT20)          Discovered 1999-Mar-19 by Spacewatch at Kitt Peak
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 FT20 = 2000 SG170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-05 13:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin