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44217 Whittle (1998 PO1)
Classification: Main-belt Asteroid          SPK-ID: 2044217
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 .06283265583370697 4.4306e-08  
a 2.579033883358513 1.2438e-08 au
q 2.416986334981979 1.1558e-07 au
i 13.65693011076984 5.8696e-06 deg
node 275.1757541344372 1.8486e-05 deg
peri 147.3614355962611 5.1098e-05 deg
M 314.2192138316295 4.7753e-05 deg
tp 2459192.882136867932
(2020-Dec-09.38213687)
0.00020102 TDB
period 1512.80864897652
4.14
1.0944e-05
2.996e-08
d
yr
n .2379679678877798 1.7215e-09 deg/d
Q 2.741081431735047 1.322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1558  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1998-07-02  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:07:02  

Additional Information
 Earth MOID = 1.44096 au 
 Jupiter MOID = 2.48959 au 
 T_jup = 3.383 
[ 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 13.1   n/a MPO439395  
diameter diameter 8.039 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.7 h n/a LCDB (Rev. 2019-August); 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 Bull. 36, 183-186.]
geometric albedo albedo 0.172   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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