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JPL Small-Body Database Browser
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22872 Williamweber (1999 RM194)
Classification: Main-belt Asteroid          SPK-ID: 2022872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798373822118903 4.4088e-08  
a 2.24704507826932 8.3854e-09 au
q 1.842942373681254 1.0188e-07 au
i 5.657498948958246 4.6458e-06 deg
node 328.1183972396369 3.6282e-05 deg
peri 6.527375314066456 3.798e-05 deg
M 311.7633668335096 9.8782e-06 deg
tp 2458765.350622221524
(2019-Oct-08.85062222)
3.3631e-05 TDB
period 1230.314391862989
3.37
6.8869e-06
1.886e-08
d
yr
n .2926081352709158 1.6379e-09 deg/d
Q 2.651147782857387 9.8935e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      9980 days (27.32 yr)  
   first obs. used      1992-07-05  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:34:45  

Additional Information
 Earth MOID = .832112 au 
 Jupiter MOID = 2.70861 au 
 T_jup = 3.602 
[ 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 15.2   n/a MPO337451  
rotation period rot_per 4.03 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; French, L.M.; James, D.; Connour, K.; Warner, B.D. (2016) Minor Planet Bull. 43, 10-15.]

22872 Williamweber           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
William James Weber mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Christina Huddleston Elementary School, Lakeville, Minnesota.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061009/MPCPages.arcLast Updated: 2006-10-14

[ show close-approach data ]
Alternate Designations
 1999 RM194 = 1998 FK42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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