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22283 Pytheas (1986 PY)
Classification: Mars-crossing Asteroid          SPK-ID: 2022283
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2468006098363378 4.1006e-08  
a 2.188839344145097 6.5276e-09 au
q 1.648632459176318 8.9975e-08 au
i 7.976807333691665 4.915e-06 deg
node 146.0018060304203 2.599e-05 deg
peri 195.7091347315427 2.7439e-05 deg
M 207.1731021983778 1.2233e-05 deg
tp 2459702.630444134129
(2022-May-03.13044413)
4.1732e-05 TDB
period 1182.821626877043
3.24
5.2912e-06
1.449e-08
d
yr
n .3043569645834882 1.3615e-09 deg/d
Q 2.729046229113877 8.1386e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1419  
   data-arc span      12640 days (34.61 yr)  
   first obs. used      1986-08-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52261  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:19  

Additional Information
 Earth MOID = .639677 au 
 Jupiter MOID = 2.67607 au 
 T_jup = 3.622 
[ 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 14.83   n/a E2021B10  
rotation period rot_per 5.730 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2018) Minor Planet Bull. 45, 380-386.]

22283 Pytheas           Discovered 1986 Aug. 6 by E. W. Elst and V. G. Ivanova at Smolyan.
Pytheas (fl. 4th century BC) was a geographer from the Greek colony of Massalia (Marseille). In 325 BC he made a voyage exploring Northwestern Europe and visiting a considerable part of Great Britain. Pytheas is also known as the first scientific investigator and reporter of the Arctic polar ice and the Germanic tribes.
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 2015-03-05Last Updated: 2015-03-09

[ show close-approach data ]
Alternate Designations
 1986 PY = 1998 FN90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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