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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756395036958605 8.8731e-08  
a 2.613366833509858 1.3848e-08 AU
q 2.154356379896964 2.2926e-07 AU
i 3.155909807819196 9.8521e-06 deg
node 36.94183319341498 0.00013149 deg
peri 324.2852636303244 0.00013388 deg
M 247.9077579705931 2.7164e-05 deg
tp 2457280.976382033222
(2015-Sep-15.47638203)
0.00011798 JED
period 1543.117475396571
4.22
1.2265e-05
3.358e-08
d
yr
n .233293968696377 1.8543e-09 deg/d
Q 3.072377287122751 1.628e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      399  
   data-arc span      19139 days (52.40 yr)  
   first obs. used      1960-10-17  
   last obs. used      2013-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61005  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:28:00  

Additional Information
 Earth MOID = 1.15111 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 ]
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