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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2287032433296768 3.6186e-08  
a 2.570520196155549 1.0953e-08 au
q 1.982633890250338 9.6978e-08 au
i 5.720970517223618 3.4994e-06 deg
node 92.38597129548516 4.5046e-05 deg
peri 298.2605047682594 4.6348e-05 deg
M 106.1299578828786 1.2886e-05 deg
tp 2458556.722326975805
(2019-Mar-14.22232698)
5.1894e-05 TDB
period 1505.323901711295
4.12
9.6212e-06
2.634e-08
d
yr
n .2391511883859293 1.5285e-09 deg/d
Q 3.158406502060759 1.3458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2094  
   data-arc span      18315 days (50.14 yr)  
   first obs. used      1969-11-15  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 08:18:37  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2058-Aug-17 20:36 00:05 Cybel 0.0357980515695247 0.0357943446740943 0.0358017584977769 3.04513450178021 3.04513444597817 2472958.358502968 5.20025180399208 192.690259010022 32.9577806371422 -16.8108482301515 53954.6841875005 T 30 CATAB v2.0f-lin.ifort 2020-Jan-29 08:19:01 2020-Jan-29 08:19
2162-May-29 11:29 00:01 Hygie 0.0207164030494022 0.0207070421518333 0.020725792056379 5.73057364064283 5.73057331518855 2510862.978663631 1.32623641588695 1296.88272812762 51.9960348405334 -69.0075804263767 55601.8161970732 T 30 CATAB v2.0f-lin.ifort 2020-Jan-29 08:19:01 2020-Jan-29 08:19

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