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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03983701226793544 1.2267e-08  
a 3.134819489554144 9.8404e-09 au
q 3.009937647091012 3.6296e-08 au
i 10.79627352952014 8.933e-07 deg
node 177.4522357315775 1.689e-06 deg
peri 227.8359331318649 3.1046e-05 deg
M 45.86881277262904 2.8541e-05 deg
tp 2459138.195345047885
(2020-Oct-15.69534505)
0.00016113 TDB
period 2027.296329724289
5.55
9.5458e-06
2.613e-08
d
yr
n .1775764079092274 8.3614e-10 deg/d
Q 3.259701332017275 1.0232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3764  
   data-arc span      42050 days (115.13 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-04-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4117  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:18:11  

Additional Information
 Earth MOID = 2.02613 au 
 Jupiter MOID = 1.91458 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 9.11   n/a E2021B10  
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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