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23992 Markhobbs (1999 RO11)
Classification: Main-belt Asteroid          SPK-ID: 2023992
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1869786815660484 3.652e-08  
a 2.317261293684973 8.5983e-09 au
q 1.883982832147721 8.4387e-08 au
i 5.312259310537472 4.1778e-06 deg
node 340.3769822933329 4.1495e-05 deg
peri 56.35604820092006 4.2712e-05 deg
M 273.2874659646928 1.0742e-05 deg
tp 2459310.841828967480
(2021-Apr-06.34182897)
3.8988e-05 TDB
period 1288.430325226133
3.53
7.1712e-06
1.963e-08
d
yr
n .2794097538311326 1.5551e-09 deg/d
Q 2.750539755222225 1.0206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      14746 days (40.37 yr)  
   first obs. used      1980-03-23  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50785  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:05:22  

Additional Information
 Earth MOID = .896743 au 
 Jupiter MOID = 2.69943 au 
 T_jup = 3.551 
[ 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 15.6   n/a MPO435925  

23992 Markhobbs           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Mark Hobbs mentored a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Fairmont Private Schools, Santa Ana, California.
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
 1999 RO11 = 1980 FH8 = 1992 SG18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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