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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06343919341517924 6.3357e-08  
a 2.579783187669195 2.4868e-08 AU
q 2.416123823057421 1.6652e-07 AU
i 13.64384339370278 7.8099e-06 deg
node 275.2455910591997 3.2728e-05 deg
peri 145.5808063787304 8.171e-05 deg
M 200.3630131137195 7.3826e-05 deg
tp 2457671.626303221802
(2016-Oct-10.12630322)
0.00031226 JED
period 1513.467986789047
4.14
2.1884e-05
5.992e-08
d
yr
n .2378642978526232 3.4394e-09 deg/d
Q 2.743442552280968 2.6446e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      744  
   data-arc span      5803 days (15.89 yr)  
   first obs. used      1998-07-02  
   last obs. used      2014-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49968  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:51:47  

Additional Information
 Earth MOID = 1.44053 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 13.0 mag n/a MPO259641  
rotation period rot_per 9.7 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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