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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03962004150702145 3.136e-08  
a 3.134046060641817 1.0427e-08 au
q 3.009875025634271 9.9459e-08 au
i 10.79652333119026 3.3482e-06 deg
node 177.4583466752404 1.883e-05 deg
peri 227.6897112309514 4.7693e-05 deg
M 11.20030695293411 4.3146e-05 deg
tp 2459137.450170930055
(2020-Oct-14.95017093)
0.00024295 TDB
period 2026.546108116619
5.55
1.0114e-05
2.769e-08
d
yr
n .1776421461905783 8.8654e-10 deg/d
Q 3.258217095649363 1.084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3605  
   data-arc span      41959 days (114.88 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:01  

Additional Information
 Earth MOID = 2.02543 au 
 Jupiter MOID = 1.91582 au 
 T_jup = 3.184 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456059.5 (2012-May-12.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03927285679085805 3.0873e-08  
q 3.012753903680931 9.7442e-08 au
tp 2457064.890271574155
(2015-Feb-11.39027157)
0.00025063 TDB
node 177.6345885594609 1.8762e-05 deg
peri 219.6759344374474 4.8639e-05 deg
i 10.81245504636027 3.3542e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3605  
   data-arc span      41959 days (114.88 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:01  

Additional Information
 Jupiter MOID = 1.91582 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.531480016913068E-16 -2.992777297442379E-15 3.730893725457902E-13 3.058017079971338E-16 7.698026700870237E-14 -1.057767032056572E-16
q -2.992777297442379E-15 9.49502984868611E-15 -1.619583697046839E-12 7.948076703266675E-17 -3.329784731175151E-13 9.631959195039657E-16
tp 3.730893725457902E-13 -1.619583697046839E-12 6.281534416486821E-8 1.225411611638717E-12 1.126381156078974E-8 -4.564628217768979E-14
node 3.058017079971338E-16 7.948076703266675E-17 1.225411611638717E-12 3.519986661105837E-10 -3.451165933077109E-10 4.007954165115682E-12
peri 7.698026700870237E-14 -3.329784731175151E-13 1.126381156078974E-8 -3.451165933077109E-10 2.365787577363016E-9 -3.953675606694926E-12
i -1.057767032056572E-16 9.631959195039657E-16 -4.564628217768979E-14 4.007954165115682E-12 -3.953675606694926E-12 1.125097517022549E-11

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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