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22869 Brianmcfar (1999 RP190)
Classification: Main-belt Asteroid          SPK-ID: 2022869
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896788736349528 3.4097e-08  
a 2.637131923357892 1.4538e-08 au
q 2.13692371050859 9.4149e-08 au
i 4.446951621258257 3.9847e-06 deg
node 25.90541770593084 5.1195e-05 deg
peri 26.95417113495696 5.2925e-05 deg
M 301.3827466621439 1.6252e-05 deg
tp 2459455.194270160501
(2021-Aug-28.69427016)
7.2079e-05 TDB
period 1564.214152602837
4.28
1.2934e-05
3.541e-08
d
yr
n .2301475149045056 1.9031e-09 deg/d
Q 3.137340136207193 1.7295e-08 au
  Orbit Determination Parameters
   # obs. used (total)      839  
   data-arc span      15289 days (41.86 yr)  
   first obs. used      1978-11-01  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52855  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:02  

Additional Information
 Earth MOID = 1.14817 au 
 Jupiter MOID = 2.24581 au 
 T_jup = 3.367 
[ 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 15.3   n/a MPO435914  

22869 Brianmcfar           Discovered 1999 Sept. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Brian McFarland mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the H.B. DuPont Middle School, Hockessin, Delaware.
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 RP190 = 1978 VU2 = 1995 UV44 = 1996 AA3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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