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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 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0396200394221736 1.2289e-08  
a 3.134046063192395 9.8378e-09 au
q 3.009875034617804 3.6345e-08 au
i 10.79652104274938 8.9352e-07 deg
node 177.458333461379 1.6891e-06 deg
peri 227.6896850813989 3.1197e-05 deg
M 11.20034668058964 2.8747e-05 deg
tp 2459137.449947214405
(2020-Oct-14.94994721)
0.00016192 TDB
period 2026.546110590512
5.55
9.542e-06
2.612e-08
d
yr
n .1776421459737228 8.3643e-10 deg/d
Q 3.258217091766985 1.0228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3709  
   data-arc span      42022 days (115.05 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41185  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:37:56  

Additional Information
 Earth MOID = 2.02543 au 
 Jupiter MOID = 1.91582 au 
 T_jup = 3.184 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456181.5 (2012-Sep-11.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03927097009449482 1.383e-08  
q 3.012704358821194 4.0751e-08 au
tp 2457065.663570710772
(2015-Feb-12.16357071)
0.00016248 TDB
node 177.6310270679044 1.6823e-06 deg
peri 219.8108647747921 3.0639e-05 deg
i 10.81193309004069 8.9526e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3709  
   data-arc span      42022 days (115.05 yr)  
   first obs. used      1906-03-04  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41185  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:37:56  

Additional Information
 Jupiter MOID = 1.91582 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.912571671268784E-16 -5.50738244786769E-16 -1.188278032842714E-12 -1.134856817063786E-15 -2.274247287095769E-13 9.134534082492951E-16
q -5.50738244786769E-16 1.660669780815436E-15 3.231747416125527E-12 3.622885051731469E-15 6.188746459265085E-13 -2.560180739900757E-15
tp -1.188278032842714E-12 3.231747416125527E-12 2.640042352986318E-8 1.234389132362458E-11 4.968519328793835E-9 -7.314025513594289E-12
node -1.134856817063786E-15 3.622885051731469E-15 1.234389132362458E-11 2.830002995325877E-12 -5.671422422587583E-13 5.670167204826762E-13
peri -2.274247287095769E-13 6.188746459265085E-13 4.968519328793835E-9 -5.671422422587583E-13 9.387748000919001E-10 -2.040927471301606E-12
i 9.134534082492951E-16 -2.560180739900757E-15 -7.314025513594289E-12 5.670167204826762E-13 -2.040927471301606E-12 8.014969590844547E-13

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 00:01 Jupiter 1.99953388355349 1.99953355555321 1.9995342115549 4.55075468561738 4.45669701078719 2416218.920614750 1.46667201438244 99.6355603384966 9.2265003641312 -81.8388523328707 9337515.8928689 T 88 CATAB v2.0g-lin.ifort 2021-May-03 18:39:21 2021-May-03 18:39
1986-Aug-26 21:18 < 00:01 Jupiter 1.97803810513199 1.97803790394525 1.97803830631872 4.7247243001799 4.63320545874265 2446669.387447284 0.355715741901422 26.9959584420554 9.13190139410942 -86.8164072278618 9401022.27452963 T 88 CATAB v2.0g-lin.ifort 2021-May-03 18:39:21 2021-May-03 18:39
2070-Jan-08 04:06 < 00:01 Jupiter 1.96075023093874 1.96075003993351 1.96075042194407 4.82017682673127 4.72970682619423 2477119.670571493 0.76077876712568 60.701415670759 7.93892883701885 86.7244921708647 10826252.7437994 T 88 CATAB v2.0g-lin.ifort 2021-May-03 18:39:21 2021-May-03 18:39
2153-May-23 11:51 00:02 Jupiter 1.97063718133555 1.97063688427829 1.9706374783956 4.8638174793696 4.7746284867546 2507569.994083933 1.85528148321189 145.484081751272 7.78378178585377 85.3810975750604 11006632.1469917 T 88 CATAB v2.0g-lin.ifort 2021-May-03 18:39:21 2021-May-03 18:39

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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