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 ]  
20533 Irmabonham (1999 RO72)
Classification: Main-belt Asteroid          SPK-ID: 2020533
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08336271117609244 3.1335e-08  
a 2.923049933122219 1.3168e-08 au
q 2.679376565794056 8.9119e-08 au
i 3.150503507654823 3.4234e-06 deg
node 112.4811700651333 6.6244e-05 deg
peri 172.8561480799667 7.0097e-05 deg
M 145.4506382339663 2.4049e-05 deg
tp 2458462.993404118075
(2018-Dec-10.49340412)
0.00012081 TDB
period 1825.377858366055
5.00
1.2335e-05
3.377e-08
d
yr
n .1972194405394211 1.3327e-09 deg/d
Q 3.166723300450383 1.4266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1699  
   data-arc span      16050 days (43.94 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-01-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51642  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:26  

Additional Information
 Earth MOID = 1.66106 au 
 Jupiter MOID = 1.94571 au 
 T_jup = 3.272 
[ 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 14.07   n/a E2021B10  

20533 Irmabonham           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Irma Bonham mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Robinson Middle School, Plano, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RO72 = 1977 DK6 = 1998 KX4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-14 15:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin