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JPL Small-Body Database Browser
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52457 Enquist (1995 AE4)
Classification: Main-belt Asteroid          SPK-ID: 2052457
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .228703256652745 3.1516e-08  
a 2.570520192331322 9.7037e-09 au
q 1.982633853053508 8.3319e-08 au
i 5.720970661526657 3.4726e-06 deg
node 92.38596562552299 4.2935e-05 deg
peri 298.2605085836074 4.4191e-05 deg
M 106.1299614178158 1.1972e-05 deg
tp 2458556.722313184952
(2019-Mar-14.22231319)
4.844e-05 TDB
period 1505.323898352034
4.12
8.5239e-06
2.334e-08
d
yr
n .239151188919616 1.3542e-09 deg/d
Q 3.158406531609136 1.1923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2174  
   data-arc span      18344 days (50.22 yr)  
   first obs. used      1969-11-15  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47169  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:28:58  

Additional Information
 Earth MOID = .996139 au 
 Jupiter MOID = 2.29798 au 
 T_jup = 3.386 
[ 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 14.5   n/a MPO449339  
diameter diameter 7.983 km 0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52457 Enquist           Discovered 1995 Jan. 2 by E. W. Elst at Caussols.
Anna Enquist (b. 1945) is a Dutch author and poet, who studied psycho-analysis at Leiden and piano at the conservatory of Den Haag. Her first novel The Masterpiece (1994), based on Mozart's Don Giovanni, established her fame as a novelist. Music and psycho-analysis, as well as family tragedy, are the major themes of her work.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-09-09Last Updated: 2014-11-10

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Alternate Designations
 1995 AE4 = 1969 VJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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