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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03962003754661341 1.2311e-08  
a 3.134046057887678 1.0077e-08 au
q 3.009875035401353 3.6346e-08 au
i 10.79652103035293 8.9356e-07 deg
node 177.4583334664634 1.6891e-06 deg
peri 227.6896898467688 3.1254e-05 deg
M 11.20034319195506 2.8779e-05 deg
tp 2459137.449967013036
(2020-Oct-14.94996701)
0.00016211 TDB
period 2026.546105445286
5.55
9.7741e-06
2.676e-08
d
yr
n .177642146424741 8.5677e-10 deg/d
Q 3.258217080374004 1.0476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3696  
   data-arc span      42010 days (115.02 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41062  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:08:31  

Additional Information
 Earth MOID = 2.02543 au 
 Jupiter MOID = 1.91582 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

[ 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
1903-Apr-14 10:06 00:02 Jupiter 1.99953383569856 1.99953350245309 1.99953416894528 4.55075495439772 4.45669728296524 2416218.920804775 1.50300704780783 102.094392896822 9.22702556833869 -81.8327752827245 9337044.30237048 T 87 CATAB v2.0f-lin.ifort 2021-Apr-12 11:09:54 2021-Apr-12 11:09
1986-Aug-26 21:18 < 00:01 Jupiter 1.97803809064865 1.97803788871442 1.97803829258287 4.72472429421289 4.63320545198106 2446669.387490778 0.364178442635557 27.602888948495 9.14735664899641 -86.5547434333701 9388225.89177509 T 87 CATAB v2.0f-lin.ifort 2021-Apr-12 11:09:54 2021-Apr-12 11:09
2070-Jan-08 04:05 < 00:01 Jupiter 1.9607502220063 1.96075003069424 1.96075041331848 4.8201767042188 4.72970670092225 2477119.670474399 0.778961576669457 62.1410663489507 7.94618349261915 86.7927956342584 10818498.6530876 T 87 CATAB v2.0f-lin.ifort 2021-Apr-12 11:09:54 2021-Apr-12 11:09
2153-May-23 11:51 00:02 Jupiter 1.9706371392764 1.97063683793582 1.97063744062 4.86381738270918 4.77462838636725 2507569.993845492 1.90062182649331 149.041111856999 7.78589706200042 85.3957373341921 11003889.850368 T 87 CATAB v2.0f-lin.ifort 2021-Apr-12 11:09:54 2021-Apr-12 11:09

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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