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 ]  
18053 (1999 RU208)
Classification: Main-belt Asteroid          SPK-ID: 2018053
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2518738842475847 2.1275e-08  
a 2.897261495621633 1.3148e-08 au
q 2.167516989038446 6.609e-08 au
i 12.25991807850725 9.6959e-07 deg
node 228.1318517204861 3.7062e-06 deg
peri 314.1303273052258 4.9773e-06 deg
M 304.4383672654182 5.0481e-06 deg
tp 2459478.504910834826
(2021-Sep-21.00491083)
2.65e-05 TDB
period 1801.274782161792
4.93
1.2261e-05
3.357e-08
d
yr
n .1998584577795219 1.3604e-09 deg/d
Q 3.627006002204821 1.6459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2132  
   data-arc span      14223 days (38.94 yr)  
   first obs. used      1982-04-15  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46485  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:39:52  

Additional Information
 Earth MOID = 1.18746 au 
 Jupiter MOID = 1.47682 au 
 T_jup = 3.207 
[ 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 12.97   n/a E2021B10  
diameter diameter 18.28 km 1.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0277   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

18053 (1999 RU208)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RU208 = 1998 QW79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-17 03:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin