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52 Europa (A858 CA)
Classification: Main-belt Asteroid          SPK-ID: 2000052
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 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .110441968518672 2.7492e-08  
a 3.094249386944294 6.4924e-09 au
q 2.752514393562472 8.5014e-08 au
i 7.478465148069584 2.8168e-06 deg
node 128.6006923568405 2.2073e-05 deg
peri 343.3664555839664 2.5384e-05 deg
M 309.8657102891241 1.273e-05 deg
tp 2459277.362261994788
(2021-Mar-03.86226199)
7.0623e-05 TDB
period 1988.06874282896
5.44
6.2571e-06
1.713e-08
d
yr
n .1810802575607779 5.6992e-10 deg/d
Q 3.435984380326115 7.2095e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3281  
   data-arc span      58555 days (160.31 yr)  
   first obs. used      1860-07-09  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:50:41  

Additional Information
 Earth MOID = 1.77 au 
 Jupiter MOID = 1.65974 au 
 T_jup = 3.201 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452338.5 (2002-Mar-05.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013207092417899 2.7359e-08  
q 2.786127878547898 8.3545e-08 au
tp 2453304.847348325136
(2004-Oct-26.34734832)
7.4222e-05 TDB
node 129.0226587956484 2.2079e-05 deg
peri 342.710535130374 2.6026e-05 deg
i 7.46850703717252 2.8121e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3281  
   data-arc span      58555 days (160.31 yr)  
   first obs. used      1860-07-09  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:50:41  

Additional Information
 Jupiter MOID = 1.65974 au 
 T_jup = 3.201 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.484890085482283E-16 -2.279526173793358E-15 -2.778952930168569E-13 -4.054960750087608E-15 -3.973346376835168E-14 -5.385141930448678E-16
q -2.279526173793358E-15 6.979690408468678E-15 8.629155591468815E-13 1.082210205382769E-14 1.204831228056271E-13 1.665984609453736E-15
tp -2.778952930168569E-13 8.629155591468815E-13 5.50886735146208E-9 3.570366829347893E-12 1.033998635851798E-9 9.033118540667525E-13
node -4.054960750087608E-15 1.082210205382769E-14 3.570366829347893E-12 4.874906890534845E-10 -4.823063404117139E-10 -1.100026515252081E-11
peri -3.973346376835168E-14 1.204831228056271E-13 1.033998635851798E-9 -4.823063404117139E-10 6.773763851502588E-10 1.105532231005422E-11
i -5.385141930448678E-16 1.665984609453736E-15 9.033118540667525E-13 -1.100026515252081E-11 1.105532231005422E-11 7.908114458738283E-12

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 6.4   n/a MPO492748 IRAS observations used: 19
magnitude slope G 0.18   n/a PDS3 (MPC 17257) Fit
diameter diameter 303.918 km 3.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.6304 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Zappala, V.; Di Martino, M.; Cacciatori, S. (1983) Icarus 56, 319-324.]
[Michalowski, T.; Velichko, F.P.; Di Martino, M.; Krugly, et al. (1995) Icarus 118, 292-301.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (1999) Astron. Astrophys. Suppl. Ser. 139, 565-574.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Michalowski, T.; Kwiatkowski, T.; Pych, W.; Kryszczynska, A.; et al. (2004) Astron. Astrophys. 416, 353-366.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.679   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.33, mean=11.85, max.=20.86) deg.
U-B UB 0.338   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.33, mean=12.40, max.=20.86) deg.
Tholen spectral type spec_T CF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

52 Europa (A858 CA)          Discovered 1858-Feb-04 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A858 CA = 1948 LA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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