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15338 Dufault (1994 AZ4)
Classification: Main-belt Asteroid          SPK-ID: 2015338
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231260986718081 3.8196e-08  
a 2.925291636360443 1.325e-08 au
q 2.565111889698112 1.0945e-07 au
i 2.940917533992768 4.4433e-06 deg
node 96.42603331604488 7.5607e-05 deg
peri 102.40042831738 7.7828e-05 deg
M 32.3362914549888 1.7198e-05 deg
tp 2458836.350376515293
(2019-Dec-18.85037652)
8.7175e-05 TDB
period 1827.478099544952
5.00
1.2417e-05
3.4e-08
d
yr
n .1969927848052686 1.3384e-09 deg/d
Q 3.285471383022774 1.4882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1368  
   data-arc span      9658 days (26.44 yr)  
   first obs. used      1994-01-05  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:49:25  

Additional Information
 Earth MOID = 1.56488 au 
 Jupiter MOID = 1.67386 au 
 T_jup = 3.265 
[ 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 14.4   n/a MPO473974  
diameter diameter 3.901 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.351 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.320   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15338 Dufault           Discovered 1994 Jan. 5 by Spacewatch at Kitt Peak.
Named in honor of Michele Dufault (1988-2011), an outstanding astronomy and physics student at Yale College who died in an accident just weeks before graduation. Michele was passionate about science and about encouraging others, especially young women, to pursue science careers. Citation by M. Urry.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110715/MPCPages.arcLast Updated: 2011-07-20

[ show close-approach data ]
Alternate Designations
 1994 AZ4 = 1999 CR83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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