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21466 Franpelrine (1998 HZ91)
Classification: Main-belt Asteroid          SPK-ID: 2021466
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510267687418839 3.5344e-08  
a 2.363131754170617 7.8951e-09 au
q 2.006235601226889 8.1466e-08 au
i 2.84959851446 3.4131e-06 deg
node 137.1240588244818 7.3484e-05 deg
peri 61.26154452782527 7.4339e-05 deg
M 149.5970945616342 1.1138e-05 deg
tp 2458845.120025552663
(2019-Dec-27.62002555)
4.0556e-05 TDB
period 1326.875975651121
3.63
6.6495e-06
1.821e-08
d
yr
n .2713139785527746 1.3597e-09 deg/d
Q 2.720027907114345 9.0875e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1528  
   data-arc span      16213 days (44.39 yr)  
   first obs. used      1976-04-02  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4958  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:45:57  

Additional Information
 Earth MOID = 1.00687 au 
 Jupiter MOID = 2.23454 au 
 T_jup = 3.533 
[ 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 14.84   n/a E2020-QM5  

21466 Franpelrine           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Frances Pelrine mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Notre Dame High School for Boys, Niles, Illinois.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1998 HZ91 = 1976 GE4 = 1994 EU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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