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 ]  
66839 (1999 UE51)
Classification: Main-belt Asteroid          SPK-ID: 2066839
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3049591646842317 2.6126e-08  
a 2.608925044839185 1.1078e-08 au
q 1.813309442441255 6.5615e-08 au
i 7.115937069786291 3.1005e-06 deg
node 111.3888087280035 4.3891e-05 deg
peri 194.1237302931868 4.4867e-05 deg
M 66.34870191387411 1.0645e-05 deg
tp 2458916.825198657154
(2020-Mar-08.32519866)
4.4601e-05 TDB
period 1539.185026045999
4.21
9.8032e-06
2.684e-08
d
yr
n .2338900092634096 1.4897e-09 deg/d
Q 3.404540647237115 1.4456e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      9150 days (25.05 yr)  
   first obs. used      1996-01-14  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:25:16  

Additional Information
 Earth MOID = .797129 au 
 Jupiter MOID = 1.86722 au 
 T_jup = 3.333 
[ 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 15.40   n/a E2021B10  

66839 (1999 UE51)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 UE51 = 1998 HY104 
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-19 18:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin