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72596 Zilkha (2001 FF9)
Classification: Main-belt Asteroid          SPK-ID: 2072596
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1947046926746361 4.1531e-08  
a 2.398407682272283 1.031e-08 au
q 1.931426451586972 1.01e-07 au
i 14.57316221298941 4.7747e-06 deg
node 4.71936691661879 1.5498e-05 deg
peri 4.268904889292997 1.9203e-05 deg
M 283.7561596420217 1.4452e-05 deg
tp 2459487.832796248576
(2021-Sep-30.33279625)
5.5618e-05 TDB
period 1356.697225163624
3.71
8.7483e-06
2.395e-08
d
yr
n .2653502884231096 1.711e-09 deg/d
Q 2.865388912957594 1.2318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      24039 days (65.82 yr)  
   first obs. used      1954-08-06  
   last obs. used      2020-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49386  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:57  

Additional Information
 Earth MOID = .92918 au 
 Jupiter MOID = 2.59889 au 
 T_jup = 3.459 
[ 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 14.96   n/a MPCxxxxx  
diameter diameter 2.799 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.271   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72596 Zilkha           Discovered 2001 Mar. 21 by J. Dellinger and K. Rivich at Needville.
Michael (b. 1954) and Nina (b. 1954) Zilkha are noted Houston, Texas, entrepreneurs and philanthropists. Their chance visit to the George Observatory in the year 2000 led to a generous equipment grant, resulting in hundreds of discoveries of minor planets and of measurements of variable stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

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Alternate Designations
 2001 FF9 = 1999 XX161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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