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20274 Halperin (1998 FZ40)
Classification: Main-belt Asteroid          SPK-ID: 2020274
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09534820681154313 2.3577e-08  
a 2.484924416918797 8.9838e-09 au
q 2.247991329703371 5.6683e-08 au
i .1417932265368967 3.3075e-06 deg
node 249.9160747085281 0.0013945 deg
peri 42.72120968709459 0.0013947 deg
M 186.6703768357193 2.5202e-05 deg
tp 2459889.371938841022
(2022-Nov-05.87193884)
0.00010183 TDB
period 1430.764652085587
3.92
7.759e-06
2.124e-08
d
yr
n .2516137084287327 1.3645e-09 deg/d
Q 2.721857504134224 9.8404e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1511  
   data-arc span      10829 days (29.65 yr)  
   first obs. used      1991-07-12  
   last obs. used      2021-03-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .524  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:24  

Additional Information
 Earth MOID = 1.22986 au 
 Jupiter MOID = 2.41018 au 
 T_jup = 3.470 
[ 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 15.32   n/a E2021B10  
diameter diameter 2.121 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.188   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20274 Halperin           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Bruce David Halperin (b. 1987) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for his computer science project. He attends the Half Hollow Hills High School East, Dix Hills, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20

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Alternate Designations
 1998 FZ40 = 1991 NE9 = 1996 WN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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