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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1105903073288318 2.7495e-08  
a 3.095046894844041 6.5099e-09 au
q 2.752764707546092 8.5034e-08 au
i 7.478546519929819 2.8162e-06 deg
node 128.5992665946191 2.2055e-05 deg
peri 343.2672347568989 2.5355e-05 deg
M 346.1683205412687 1.2723e-05 deg
tp 2459276.913781540091
(2021-Mar-03.41378154)		 7.0375e-05 TDB
period 1988.837395813673
5.45		 6.2748e-06
1.718e-08		 d
yr
n .1810102730156665 5.7108e-10 deg/d
Q 3.437329082141991 7.2298e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3293  
   data-arc span      58636 days (160.54 yr)  
   first obs. used      1860-07-09  
   last obs. used      2021-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51119  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:59  

Additional Information
 Earth MOID = 1.77016 au 
 Jupiter MOID = 1.65837 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 6.49   n/a E2021B10 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

[ 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
1916-Jan-21 09:39 < 00:01 Jupiter 1.87987720859075 1.87987672254189 1.87987769464003 3.2386785926413 3.09643220265575 2420883.902319454 0.905590957356676 57.3690155202598 8.34927781179473 72.1482115360931 4808236.38866415 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
1925-Dec-25 05:35 < 00:01 Jupiter 1.71762734715812 1.71762708914929 1.71762760516695 2.59914445705203 2.40193286676891 2424509.732528651 0.801668242808389 54.6554080210583 11.3115136541981 -87.0964736015577 4105790.35046187 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
1986-Aug-08 07:35 < 00:01 Jupiter 1.75639848454435 1.75639820673616 1.75639876235254 2.83667191332854 2.66124186947498 2446650.815848243 0.223436914274944 31.4751288235401 6.986699432592 75.6956722497554 4764163.98361859 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
1996-Jul-15 21:47 < 00:01 Jupiter 1.80910754371975 1.80910726486413 1.80910782257538 2.62309708410228 2.43808123766004 2450280.407885830 0.169637580444671 36.6398495633538 10.3520007904034 84.661417131589 4137477.64122926 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2057-Feb-24 07:20 < 00:01 Jupiter 1.69242818513768 1.69242794583772 1.69242842443763 2.65194630162019 2.45598531050445 2472418.805796553 0.576429414088374 47.8201565040059 8.86100184149046 87.2787868891819 4362447.62781451 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2067-Feb-03 15:54 < 00:01 Jupiter 1.95018214985323 1.95018170088269 1.95018259882365 2.81864868640442 2.66009783977817 2476050.162648709 0.673250056970003 38.9507164792218 16.7175625443766 81.3168641994736 3913091.70501309 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2117-Oct-14 09:25 00:01 Jupiter 1.86056038326383 1.86055986880174 1.86056089772665 3.07039438386216 2.91835897229189 2494564.892457176 1.21166572146313 73.15031206587 7.70734285885269 75.5156613545204 4770172.73228451 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2127-Sep-14 23:02 00:01 Jupiter 1.70741944883298 1.70741905375634 1.7074198439101 2.60623492198356 2.40837986748272 2498187.459900482 1.28763376180261 74.489346687198 12.9304548447866 -81.4925871216546 4067063.46843189 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2188-Apr-27 01:34 00:02 Jupiter 1.73382888175711 1.7338283539792 1.73382940953778 2.68947296443829 2.50124178912539 2520327.565543365 1.9566195462434 128.397712701644 7.08093409710018 81.2732440838965 4577951.60742997 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43
2198-Apr-03 02:05 00:02 Jupiter 1.80790085558003 1.80789997801371 1.80790173314655 2.69717485835331 2.51748466210284 2523955.586875063 2.00944513639535 65.2311700290697 23.5949459495021 -61.2422646956657 3558904.20940934 T 104 CATAB v2.0f-lin.ifort 2021-Feb-24 00:43:08 2021-Feb-24 00:43

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