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22002 Richardregan (1999 XB42)
Classification: Main-belt Asteroid          SPK-ID: 2022002
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304937252319991 3.8896e-08  
a 2.633096479568197 1.1579e-08 au
q 2.28949391105408 1.0157e-07 au
i 3.378616504536381 3.9811e-06 deg
node 244.2057522841343 6.8578e-05 deg
peri 279.4470844422468 7.0383e-05 deg
M 238.9266344213101 1.8359e-05 deg
tp 2459725.361478856284
(2022-May-25.86147886)
8.1507e-05 TDB
period 1560.625092770356
4.27
1.0294e-05
2.818e-08
d
yr
n .2306767984621747 1.5216e-09 deg/d
Q 2.976699048082313 1.309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      22075 days (60.44 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50772  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:57:26  

Additional Information
 Earth MOID = 1.29982 au 
 Jupiter MOID = 2.01821 au 
 T_jup = 3.384 
[ 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 14.54   n/a E2021B10  
diameter diameter 3.451 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22002 Richardregan           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Richard Regan mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Stone Middle School, Melbourne, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XB42 = 6306 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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