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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104419689911396 2.7515e-08  
a 3.094249387034625 6.5191e-09 au
q 2.752514392180894 8.5068e-08 au
i 7.478465253433833 2.8194e-06 deg
node 128.6006928377111 2.208e-05 deg
peri 343.3664550132487 2.5393e-05 deg
M 309.8657102719054 1.2748e-05 deg
tp 2459277.362262102001
(2021-Mar-03.86226210)
7.0723e-05 TDB
period 1988.068742916017
5.44
6.2828e-06
1.72e-08
d
yr
n .1810802575528485 5.7226e-10 deg/d
Q 3.435984381888356 7.239e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3249  
   data-arc span      58281 days (159.56 yr)  
   first obs. used      1860-07-09  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:15:48  

Additional Information
 Earth MOID = 1.77 au 
 Jupiter MOID = 1.65974 au 
 T_jup = 3.201 
[ 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 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. 2019-August); 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

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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
1916-Jan-21 09:39 < 00:01 Jupiter 1.87987719848614 1.879876709295 1.8798776876777 3.23867856182002 3.09643216963643 2420883.902303284 0.913020701374495 57.7416526520094 8.35399050965538 72.1297769452342 4801730.36830014 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
1925-Dec-25 05:35 < 00:01 Jupiter 1.7176273477125 1.71762708957391 1.71762760585109 2.59914444934599 2.40193285849643 2424509.732511395 0.808244348861148 55.0018455666968 11.3237140204709 -87.0682644610082 4102195.4158382 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
1986-Aug-08 07:35 < 00:01 Jupiter 1.7563984819494 1.75639820359469 1.75639876030412 2.83667190669244 2.6612418621337 2446650.815844324 0.22427050600584 31.5159196575678 6.99445960782023 75.6743007891547 4756847.56893343 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
1996-Jul-15 21:47 < 00:01 Jupiter 1.8091075419255 1.80910726277772 1.80910782107318 2.62309707067312 2.43808122302133 2450280.407895329 0.169771255602113 36.7006139024457 10.360288730385 84.6725914972328 4133607.51503749 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2057-Feb-24 07:20 < 00:01 Jupiter 1.6924281832958 1.69242794382335 1.69242842276825 2.65194630915038 2.4559853184137 2472418.805809566 0.581758621785124 48.0958341816817 8.88250446444889 87.3342048138841 4357988.21701362 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2067-Feb-03 15:54 < 00:01 Jupiter 1.95018214093117 1.95018168931275 1.95018259254959 2.81864864695109 2.6600977972263 2476050.162666232 0.679328149011694 39.0223919836107 16.81563341976 81.2351668876543 3900301.50164984 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2117-Oct-14 09:25 00:01 Jupiter 1.86056039568386 1.86055987823646 1.86056091313199 3.07039440532515 2.91835899591436 2494564.892476539 1.2230654444796 73.7603970796191 7.71283453434441 75.5368671942102 4768391.81308171 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2127-Sep-14 23:02 00:01 Jupiter 1.70741943900231 1.70741904115512 1.70741983684998 2.60623491993799 2.40837986408313 2498187.459924612 1.29952298523441 75.0518225406307 12.9588535147307 -81.4409656230548 4063647.53696303 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2188-Apr-27 01:34 00:02 Jupiter 1.73382889479476 1.73382836390709 1.7338294256853 2.68947298891868 2.50124181691673 2520327.565579903 1.97469097620781 129.530775087773 7.08965062580541 81.2856643200308 4574604.4954904 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16
2198-Apr-03 02:05 00:02 Jupiter 1.80790083085447 1.80789994564495 1.80790171606429 2.6971748367145 2.5174846363743 2523955.586912448 2.02784100040585 65.7162488899657 23.6594662190959 -61.1056899136494 3551533.9984571 T 100 CATAB v2.0f-lin.ifort 2020-Feb-22 15:16:02 2020-Feb-22 15:16

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