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18020 Amend (1999 JT126)
Classification: Main-belt Asteroid          SPK-ID: 2018020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06743707285589166 5.6902e-08  
a 2.895218573638966 1.4238e-08 au
q 2.699973507754744 1.6124e-07 au
i 1.484337715155692 4.0974e-06 deg
node 247.764099610707 0.00022809 deg
peri 88.8223566030815 0.00023098 deg
M 45.75207114337753 3.4877e-05 deg
tp 2458971.819717891582
(2020-May-02.31971789)
0.00017415 TDB
period 1799.369941112424
4.93
1.3273e-05
3.634e-08
d
yr
n .2000700310562248 1.4758e-09 deg/d
Q 3.090463639523187 1.5198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1272  
   data-arc span      10199 days (27.92 yr)  
   first obs. used      1993-03-25  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:20:10  

Additional Information
 Earth MOID = 1.68888 au 
 Jupiter MOID = 2.16546 au 
 T_jup = 3.285 
[ 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 14.38   n/a E2021B10  

18020 Amend           Discovered 1999 May 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Gregory Amend (b. 1986) was awarded first place in the 2003 Intel International Science and Engineering Fair for his zoology project. He attends the Manhasset High School, Manhasset, New York, 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: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2054-Jul-20 18:35 00:02 Psych 0.0262477158736438 0.0262409693908773 0.0262544660557005 2.12446112717108 2.12446091019449 2471469.274621737 1.75652022023296 600.861757746653 61.2739515144057 -56.4829078007367 53377.9702460663 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 02:20:19 2021-Apr-13 02:20

Alternate Designations
 1999 JT126 = 1996 VT6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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