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21389 Pshenichka (1998 FX27)
Classification: Main-belt Asteroid          SPK-ID: 2021389
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 .06176961664454061 3.5726e-08  
a 2.202899049984115 6.8659e-09 au
q 2.066826820159974 7.7607e-08 au
i 1.988441874989317 3.3939e-06 deg
node 306.3585987463129 0.00012434 deg
peri 210.6642965677497 0.00012917 deg
M 359.0725078161313 3.5394e-05 deg
tp 2459203.576791577075
(2020-Dec-20.07679158)
0.00011742 TDB
period 1194.236444265006
3.27
5.5832e-06
1.529e-08
d
yr
n .301447842869644 1.4093e-09 deg/d
Q 2.338971279808257 7.29e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1007  
   data-arc span      22088 days (60.47 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:44:36  

Additional Information
 Earth MOID = 1.07595 au 
 Jupiter MOID = 2.63757 au 
 T_jup = 3.660 
[ 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 15.8   n/a MPO452472  
rotation period rot_per 12.476 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

21389 Pshenichka           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Paul Pshenichka (b. 1946), a 2004 Intel International Science and Engineering Fair Excellence in Teaching Award finalist, is a teacher at the Chernivtsi City Lyceum No. 1, Chernivtsi, Ukraine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 1998 FX27 = 6223 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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