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 ]  
18860 (1999 RL133)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018860
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0867618030000525 3.9962e-08  
a 3.23667009659078 2.2044e-08 au
q 2.95585076329421 1.3134e-07 au
i 12.67696218181148 4.9199e-06 deg
node 197.9493281957069 1.9443e-05 deg
peri 332.5756811027522 3.3103e-05 deg
M 301.0622437816571 2.7086e-05 deg
tp 2458948.706743287202
(2020-Apr-09.20674329)
0.00016073 TDB
period 2126.89514543106
5.82
2.1729e-05
5.949e-08
d
yr
n .1692608123034849 1.7292e-09 deg/d
Q 3.517489429887351 2.3957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      10498 days (28.74 yr)  
   first obs. used      1991-03-11  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51622  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:32:04  

Additional Information
 Earth MOID = 1.96653 au 
 Jupiter MOID = 1.47373 au 
 T_jup = 3.141 
[ 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 12.8   n/a MPO340833  

18860 (1999 RL133)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RL133 = 1991 EC9 = 1998 MO11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-17 16:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin