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589 Croatia (A906 EC)
Classification: Main-belt Asteroid          SPK-ID: 2000589
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03938710819713925 3.1477e-08  
a 3.133300464753415 1.0893e-08 au
q 3.009888820334025 1.0007e-07 au
i 10.79731227864987 3.5374e-06 deg
node 177.461666637283 1.9179e-05 deg
peri 227.6344664518817 5.0213e-05 deg
M 335.7102150583584 4.6362e-05 deg
tp 2459137.185567555502
(2020-Oct-14.68556756)		 0.00026082 TDB
period 2025.822972010843
5.55		 1.0564e-05
2.892e-08		 d
yr
n .1777055571853161 9.2665e-10 deg/d
Q 3.256712109172804 1.1322e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3409  
   data-arc span      41896 days (114.70 yr)  
   first obs. used      1906-03-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42454  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:43  

Additional Information
 Earth MOID = 2.02658 au 
 Jupiter MOID = 1.91708 au 
 T_jup = 3.184 
[ 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 9.1   n/a MPO502158  
diameter diameter 93.617 km 1.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 24.821 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Mas, V.; Fornas, G.; Lozano, J.; Rodrigo, O.; et al. (2018) Minor Planet Bull. 45, 76-82.]
geometric albedo albedo 0.041   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.730   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.22, mean=5.38, max.=5.53) deg.
U-B UB 0.368   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.22, mean=5.38, max.=5.53) deg.
Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

589 Croatia (A906 EC)          Discovered 1906-Mar-03 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A906 EC = 1936 WM = 1947 RA = 1953 RF1 = 1953 VR1 = 1953 VU = A912 HH 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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