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20316 Jerahalpern (1998 FU138)
Classification: Main-belt Asteroid          SPK-ID: 2020316
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653700629958133 3.4652e-08  
a 2.425497473534104 9.0903e-09 au
q 2.024392803539584 8.3182e-08 au
i 1.439215673980118 3.9434e-06 deg
node 307.6805546887404 0.00018944 deg
peri 119.7539418574288 0.00019021 deg
M 105.0819829278627 1.4679e-05 deg
tp 2458797.759388220255
(2019-Nov-10.25938822)
5.6232e-05 TDB
period 1379.74766178746
3.78
7.7565e-06
2.124e-08
d
yr
n .2609172749266491 1.4668e-09 deg/d
Q 2.826602143528625 1.0594e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1061  
   data-arc span      15861 days (43.43 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52298  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:55  

Additional Information
 Earth MOID = 1.03824 au 
 Jupiter MOID = 2.46195 au 
 T_jup = 3.492 
[ 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 15.41   n/a E2021B10  

20316 Jerahalpern           Discovered 1998 Mar. 28 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jerald Halpern mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. He teaches at the Maimonides School, Brookline, Massachusetts.
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

[ show close-approach data ]
Alternate Designations
 1998 FU138 = 1977 RZ9 = 1989 YR2 = 2000 UN78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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