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26284 Johnspahn (1998 SZ59)
Classification: Main-belt Asteroid          SPK-ID: 2026284
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08180950884143151 3.361e-08  
a 2.411535507032562 8.2e-09 au
q 2.214248971648556 7.963e-08 au
i 7.197920228625558 4.402e-06 deg
node 153.5147834434851 2.5418e-05 deg
peri 105.3872813206265 3.6619e-05 deg
M 26.965994743007 2.5751e-05 deg
tp 2458898.040351228552
(2020-Feb-18.54035123)
9.7911e-05 TDB
period 1367.851396147239
3.74
6.9767e-06
1.91e-08
d
yr
n .2631864843023113 1.3424e-09 deg/d
Q 2.608822042416568 8.8708e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1584  
   data-arc span      10099 days (27.65 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:28:51  

Additional Information
 Earth MOID = 1.2121 au 
 Jupiter MOID = 2.44432 au 
 T_jup = 3.504 
[ 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 14.8   n/a MPO337481  
rotation period rot_per 7.501 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.]

26284 Johnspahn           Discovered 1998 Sept. 17 at the Anderson Mesa station of the Lowell Observatory.
John Spahn (b. 1944) has volunteered at Lowell Observatory since 2012. He has helped with various projects in Development, Archives, the volunteer program and the business office, including donor research and the cataloging of books, glass plate negatives, and other artifacts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2020-08-07Last Updated: 2020-08-24

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Alternate Designations
 1998 SZ59 = 1993 FX6 = 1994 PO15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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