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20017 Alixcatherine (1991 TF14)
Classification: Main-belt Asteroid          SPK-ID: 2020017
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 .1183566819006366 3.8478e-08  
a 2.548819435067147 1.2404e-08 au
q 2.247149623968745 9.869e-08 au
i 5.497400138602876 4.0116e-06 deg
node 25.47742827673872 4.6197e-05 deg
peri 48.07111799830989 4.974e-05 deg
M 318.2657125904872 2.1649e-05 deg
tp 2459172.804862552987
(2020-Nov-19.30486255)
8.9894e-05 TDB
period 1486.301896338031
4.07
1.085e-05
2.971e-08
d
yr
n .242211895770955 1.7681e-09 deg/d
Q 2.85048924616555 1.3872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1201  
   data-arc span      15572 days (42.63 yr)  
   first obs. used      1977-03-15  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 00:04:45  

Additional Information
 Earth MOID = 1.26603 au 
 Jupiter MOID = 2.40373 au 
 T_jup = 3.425 
[ 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 MPO452453  
diameter diameter 3.326 km 0.571 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20017 Alixcatherine           Discovered 1991 Oct. 2 by C. P. de Saint-Aignan at Palomar.
Alix Catherine de Saint-Aignan (b. 2002) is the eldest daughter of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 1991 TF14 = 1977 EF4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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