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21694 Allisowilson (1999 RL48)
Classification: Main-belt Asteroid          SPK-ID: 2021694
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2615198417299592 6.6984e-08  
a 2.580102168094601 1.5792e-08 au
q 1.905354257447376 1.8258e-07 au
i 4.080543651570906 5.6964e-06 deg
node 208.306345022773 4.6375e-05 deg
peri 217.3887542433144 4.8079e-05 deg
M 336.4544941480736 1.3292e-05 deg
tp 2459299.505496699237
(2021-Mar-26.00549670)
5.6516e-05 TDB
period 1513.748697346817
4.14
1.3897e-05
3.805e-08
d
yr
n .2378201881401981 2.1834e-09 deg/d
Q 3.254850078741825 1.9921e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      22713 days (62.18 yr)  
   first obs. used      1958-11-11  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:01  

Additional Information
 Earth MOID = .920183 au 
 Jupiter MOID = 2.08248 au 
 T_jup = 3.373 
[ 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 14.83   n/a E2021B10  

21694 Allisowilson           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Allison Ruth Wilson (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for her biochemistry project. She attends the West Central Valley High School, Stuart, Iowa, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 RL48 = 1958 VV = 1993 FW57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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