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

[ show orbit diagram ]
Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06388582333875858 7.0819e-08  
a 2.579736686413294 3.0087e-08 AU
q 2.414928084204579 1.8631e-07 AU
i 13.6440561552439 9.019e-06 deg
node 275.2440971468771 3.5552e-05 deg
peri 145.7522107345511 9.4238e-05 deg
M 57.4205212147622 8.3919e-05 deg
tp 2456159.106191805107
(2012-Aug-19.60619181)
0.00035255 JED
period 1513.42706599849
4.14
2.6476e-05
7.249e-08
d
yr
n .2378707293453144 4.1614e-09 deg/d
Q 2.744545288622008 3.2009e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      5381 days (14.73 yr)  
   first obs. used      1998-07-02  
   last obs. used      2013-03-26  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .49802  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 16:00:47  

Additional Information
 Earth MOID = 1.43892 AU 
 T_jup = 3.383 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.882 mag .55617 1 autocmod 2.5c
rotation period rot_per 9.7 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-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
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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