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 ]  
9809 Jimdarwin (1998 RZ5)
Classification: Main-belt Asteroid          SPK-ID: 2009809
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1755674545043354 6.8747e-08  
a 2.613718171230691 1.9291e-08 AU
q 2.154834325115992 1.7779e-07 AU
i 3.15560579800074 8.7719e-06 deg
node 36.93812059950021 0.00010869 deg
peri 324.2448625458579 0.00011116 deg
M 294.6005256240184 2.543e-05 deg
tp 2457280.887287842310
(2015-Sep-15.38728784)
0.00011043 JED
period 1543.428667987922
4.23
1.7087e-05
4.678e-08
d
yr
n .2332469309834131 2.5823e-09 deg/d
Q 3.07260201734539 2.2678e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      19609 days (53.69 yr)  
   first obs. used      1960-10-17  
   last obs. used      2014-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58538  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:22:36  

Additional Information
 Earth MOID = 1.15308 AU 
 T_jup = 3.384 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO256937  

9809 Jimdarwin           Discovered 1998 Sept. 13 by the Lowell Observatory Near-Earth-Object Search at Anderson Mesa Station.
James L. Darwin (b. 1939), instrument maker at Lowell Observatory, machined most of the parts for the refurbishment of the LONEOS Schmidt telescope and construction of its CCD camera.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1998 RZ5 = 1994 TJ9 = 1997 HQ10 = 9532 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-22 01:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin