Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
23922 Tawadros (1998 SR135)
Classification: Main-belt Asteroid          SPK-ID: 2023922
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581785517766968 7.7024e-08  
a 3.106600464463459 3.2745e-08 AU
q 2.615202902045815 2.4598e-07 AU
i 3.950699870325906 6.0276e-06 deg
node 96.35207172304946 0.00011574 deg
peri 251.5918588897147 0.00011738 deg
M 8.088889411641201 1.7511e-05 deg
tp 2456955.562083979192
(2014-Oct-25.06208398)
9.7316e-05 JED
period 1999.984045301544
5.48
3.1621e-05
8.657e-08
d
yr
n .180001435934316 2.8459e-09 deg/d
Q 3.597998026881102 3.7924e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      624  
   data-arc span      8515 days (23.31 yr)  
   first obs. used      1991-05-14  
   last obs. used      2014-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5683  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:18:25  

Additional Information
 Earth MOID = 1.61231 AU 
 T_jup = 3.197 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO302209  

23922 Tawadros           Discovered 1998 Sept. 26 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kyrillos Bahaa Tawadros (b. 1993) is a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his earth and space science project. He attends the Doolen Middle School, Tucson, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071026/MPCPages.arcLast Updated: 2007-10-28

[ show close-approach data ]
Alternate Designations
 1998 SR135 = 1999 XB219 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-30 19:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin