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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179894440892604 3.8428e-08  
a 2.549919903229462 1.2658e-08 au
q 2.249056271375277 9.846e-08 au
i 5.497089442371349 4.0114e-06 deg
node 25.49730588811438 4.619e-05 deg
peri 47.85761871916473 4.9755e-05 deg
M 221.574901632897 2.1419e-05 deg
tp 2459172.374293823001
(2020-Nov-18.87429382)
9.0162e-05 TDB
period 1487.264579941283
4.07
1.1074e-05
3.032e-08
d
yr
n .2420551157173478 1.8024e-09 deg/d
Q 2.850783535083647 1.4152e-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 = 1.26766 au 
 Jupiter MOID = 2.40495 au 
 T_jup = 3.424 
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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

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