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21258 Huckins (1996 EH1)
Classification: Main-belt Asteroid          SPK-ID: 2021258
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1643288585852121 3.6363e-08  
a 3.159114599292082 1.7273e-08 au
q 2.639980903050534 1.1194e-07 au
i 14.71587876681156 4.7842e-06 deg
node 197.4341598004553 1.3378e-05 deg
peri 41.30004867810265 1.9412e-05 deg
M 149.2638908657959 1.5386e-05 deg
tp 2458546.147965464849
(2019-Mar-03.64796546)
8.4863e-05 TDB
period 2050.909504348207
5.62
1.6821e-05
4.605e-08
d
yr
n .1755318795084576 1.4397e-09 deg/d
Q 3.67824829553363 2.0112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1798  
   data-arc span      15428 days (42.24 yr)  
   first obs. used      1979-04-25  
   last obs. used      2021-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:06  

Additional Information
 Earth MOID = 1.64959 au 
 Jupiter MOID = 1.371 au 
 T_jup = 3.134 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457377.5 (2015-Dec-21.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1633239358618766 3.6361e-08  
q 2.645480957691822 1.1176e-07 au
tp 2456496.235453847445
(2013-Jul-22.73545385)
8.1251e-05 TDB
node 197.5219713901178 1.3364e-05 deg
peri 41.89687936664733 1.9452e-05 deg
i 14.72004093202407 4.7849e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1798  
   data-arc span      15428 days (42.24 yr)  
   first obs. used      1979-04-25  
   last obs. used      2021-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:06  

Additional Information
 Jupiter MOID = 1.371 au 
 T_jup = 3.134 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.322125087889372E-15 -4.031948320866409E-15 -4.041774745770608E-13 1.957958253865771E-15 -1.186182045778606E-13 4.456514494374232E-16
q -4.031948320866409E-15 1.249133159933606E-14 1.445939567428654E-12 -6.330172484623092E-15 4.127968818875025E-13 -7.606350772582712E-16
tp -4.041774745770608E-13 1.445939567428654E-12 6.601716252890374E-9 -9.879133359067707E-12 1.153757332897665E-9 -3.971790832576465E-12
node 1.957958253865771E-15 -6.330172484623092E-15 -9.879133359067707E-12 1.785946734446828E-10 -1.742004115684659E-10 -1.698454239063161E-11
peri -1.186182045778606E-13 4.127968818875025E-13 1.153757332897665E-9 -1.742004115684659E-10 3.783698991788504E-10 1.579257209739226E-11
i 4.456514494374232E-16 -7.606350772582712E-16 -3.971790832576465E-12 -1.698454239063161E-11 1.579257209739226E-11 2.289499372249199E-11

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 13.32   n/a E2021B10  

21258 Huckins           Discovered 1996 Mar. 15 by the JPL Near-Earth Asteroid Tracking program at Haleakala.
Earle Knowlen Huckins, III (b. 1943), Deputy Associate Administrator in the Office of Space Science at NASA Headquarters, has been responsible for the management, direction and oversight of NASA's space science flight program, mission studies, technology development and overall contract management of JPL.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011002/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1996 EH1 = 1979 HV3 = 1990 DS8 = 1998 SV143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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