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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09548811233149676 2.4171e-08  
a 2.483961660943534 9.468e-09 au
q 2.246772850836227 5.7859e-08 au
i .1418580174850846 3.9664e-06 deg
node 249.9301402672785 0.001651 deg
peri 42.44641713216502 0.0016512 deg
M 35.92887958558391 2.87e-05 deg
tp 2458457.789169684454
(2018-Dec-05.28916968)
0.00011384 TDB
period 1429.933232157084
3.91
8.1756e-06
2.238e-08
d
yr
n .2517600066241781 1.4394e-09 deg/d
Q 2.721150471050842 1.0372e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1368  
   data-arc span      10367 days (28.38 yr)  
   first obs. used      1991-07-12  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53338  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:42:57  

Additional Information
 Earth MOID = 1.22991 au 
 Jupiter MOID = 2.4106 au 
 T_jup = 3.470 
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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 15.3   n/a MPO449100  
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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