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44217 Whittle (1998 PO1)
Classification: Main-belt Asteroid          SPK-ID: 2044217
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06309854007918698 6.0301e-08  
a 2.579919784835048 2.0258e-08 au
q 2.417130612890546 1.6227e-07 au
i 13.64203633191033 7.5006e-06 deg
node 275.233197023546 2.8552e-05 deg
peri 145.5372637730409 7.8482e-05 deg
M 343.0901751278487 7.4026e-05 deg
tp 2457671.595864668617
(2016-Oct-10.09586467)
0.0003115 JED
period 1513.588193503617
4.14
1.7827e-05
4.881e-08
d
yr
n .2378454070566452 2.8014e-09 deg/d
Q 2.74270895677955 2.1536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      6369 days (17.44 yr)  
   first obs. used      1998-07-02  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49316  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:50:00  

Additional Information
 Earth MOID = 1.44028 au 
 Jupiter MOID = 2.49866 au 
 T_jup = 3.383 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO347833  
rotation period rot_per 9.7 h n/a LCDB (Rev. 2016-February); 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:
[Galad, A. (2009) Minor Planet Bul. 36, 183-186.]

44217 Whittle           Discovered 1998 Aug. 12 by J. Broughton at Reedy Creek.
British aeronautical engineer and pilot Frank Whittle (1907-1996) was the inventor of the turbo-jet engine, which he first patented in 1930. Such an ingenious yet simple method of high-speed propulsion made flight an affordable and relatively safe form of travel for the masses.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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