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52 Europa
Classification: Main-belt Asteroid          SPK-ID: 2000052
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076250034658675 2.883e-08  
a 3.094871928197279 7.0062e-09 AU
q 2.76178632619863 8.9425e-08 AU
i 7.48308831617066 2.9996e-06 deg
node 128.7276197268891 2.4173e-05 deg
peri 344.235153509664 2.815e-05 deg
M 270.6448395677443 1.3518e-05 deg
tp 2457294.105042532012
(2015-Sep-28.60504253)
7.4719e-05 JED
period 1988.668751216057
5.44
6.7529e-06
1.849e-08
d
yr
n .1810256231862961 6.1471e-10 deg/d
Q 3.427957530195926 7.7602e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2209  
   data-arc span      55793 days (152.75 yr)  
   first obs. used      1860-07-09  
   last obs. used      2013-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59821  
   data source      ORB  
   producer      Davide Farnocchia  
   solution date      2013-Jul-16 08:47:09  

Additional Information
 Earth MOID = 1.77886 AU 
 T_jup = 3.202 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.31 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
magnitude slope G 0.18   n/a PDS3 (MPC 17257) Fit
diameter diameter 302.50 km 5.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 5.6304 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.0578   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV .679 mag .017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=6; phase (min.=3.33, mean=11.85, max.=20.86) deg.
U-B UB .338 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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          Discovered 1858-Feb-04 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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