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JPL Small-Body Database Browser
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19656 Simpkins (1999 RA122)
Classification: Main-belt Asteroid          SPK-ID: 2019656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08940279969215505 4.6643e-08  
a 2.374113799630563 1.0191e-08 au
q 2.161861379155811 1.1476e-07 au
i 5.988582075897976 4.8695e-06 deg
node 318.391225561092 3.7351e-05 deg
peri 272.8058207321475 4.8581e-05 deg
M 328.0903429170906 3.4658e-05 deg
tp 2459118.932354055347
(2020-Sep-26.43235406)
0.00012892 TDB
period 1336.136184389153
3.66
8.603e-06
2.355e-08
d
yr
n .2694336132843993 1.7348e-09 deg/d
Q 2.586366220105316 1.1102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1155  
   data-arc span      9509 days (26.03 yr)  
   first obs. used      1994-01-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:53:36  

Additional Information
 Earth MOID = 1.16124 au 
 Jupiter MOID = 2.4336 au 
 T_jup = 3.530 
[ 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 15.0   n/a MPO467930  

19656 Simpkins           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Taylor Simpkins (b. 1990) is a finalist in the 2003 Discovery Channel Young Scientist Challenge, a middle school science competition, for her environmental sciences project. She attends the Pegasus School, Huntington Beach, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031010/MPCPages.arcLast Updated: 2003-10-10

[ show close-approach data ]
Alternate Designations
 1999 RA122 = 1998 FW18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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