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22846 Fredwhitaker (1999 RN120)
Classification: Main-belt Asteroid          SPK-ID: 2022846
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315125595332814 4.0449e-08  
a 2.388938975537696 9.5023e-09 au
q 2.074763496295918 9.5021e-08 au
i 8.119874713595808 4.1696e-06 deg
node 173.5997475613333 2.1566e-05 deg
peri 194.6994111646207 2.4654e-05 deg
M 245.9367503360073 1.2819e-05 deg
tp 2459627.816094649466
(2022-Feb-17.31609465)
4.9364e-05 TDB
period 1348.670974454708
3.69
8.0468e-06
2.203e-08
d
yr
n .2669294489306812 1.5926e-09 deg/d
Q 2.703114454779473 1.0752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      15572 days (42.63 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57719  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:42  

Additional Information
 Earth MOID = 1.07268 au 
 Jupiter MOID = 2.75789 au 
 T_jup = 3.508 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.66   n/a E2021B10  
rotation period rot_per 6.78305 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

22846 Fredwhitaker           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Fred Joseph Whitaker mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the St. Francis of Assisi School, Louisville, Kentucky.
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

Alternate Designations
 1999 RN120 = 1977 RQ10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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