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20874 MacGregor (2000 VL49)
Classification: Main-belt Asteroid          SPK-ID: 2020874
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09464317634096911 3.0598e-08  
a 2.947421346764768 1.4483e-08 au
q 2.668468028491774 8.7467e-08 au
i 1.970737957742922 3.2343e-06 deg
node 7.508318381016304 0.00010255 deg
peri 326.7892329744624 0.0001046 deg
M 71.10785659749553 1.9572e-05 deg
tp 2458835.429407321368
(2019-Dec-17.92940732)
0.00010084 TDB
period 1848.254463754099
5.06
1.3623e-05
3.73e-08
d
yr
n .1947783744391899 1.4357e-09 deg/d
Q 3.226374665037763 1.5854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1465  
   data-arc span      10547 days (28.88 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:33:53  

Additional Information
 Earth MOID = 1.65678 au 
 Jupiter MOID = 2.09239 au 
 T_jup = 3.263 
[ 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 14.40   n/a E2021B10  

20874 MacGregor           Discovered 2000 Nov. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Meredith MacGregor (b. 1989) was awarded second place in the 2004 Intel International Science and Engineering Fair for her physics project. She attends the Fairview High School, Boulder, Colorado, 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: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 2000 VL49 = 1994 PX26 = 1999 RD54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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