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690 Wratislavia (A909 UE)
Classification: Main-belt Asteroid          SPK-ID: 2000690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782746919037105 3.8285e-08  
a 3.153187284419249 1.2872e-08 au
q 2.591053792774709 1.2269e-07 au
i 11.25286355192827 4.4187e-06 deg
node 253.1227945322859 2.2627e-05 deg
peri 114.1092542731454 2.5902e-05 deg
M 301.3286765784621 1.42e-05 deg
tp 2459333.808554720851
(2021-Apr-29.30855472)
8.1865e-05 TDB
period 2045.140158803002
5.60
1.2523e-05
3.429e-08
d
yr
n .176027055383189 1.0779e-09 deg/d
Q 3.715320776063788 1.5166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3564  
   data-arc span      43212 days (118.31 yr)  
   first obs. used      1902-06-03  
   last obs. used      2020-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34713  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:29:03  

Additional Information
 Earth MOID = 1.61615 au 
 Jupiter MOID = 1.92092 au 
 T_jup = 3.153 
[ 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 8.0   n/a MPO492757 IRAS observations used: 6
diameter diameter 134.65 km 3.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.64 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Sada, P.V. (2000) Minor Planet Bull. 27, 25-26.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D.; Durkee, R.I. (2005) Minor Planet Bull. 32, 38-39.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Michalowski, T.; Kaasalainen, M.; Polinska, M.; Marciniak, A.; et al. (2006) Astron. Astrophys. 459, 663-668.]
geometric albedo albedo 0.0604   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.675   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.61, mean=12.81, max.=22.23) deg.
U-B UB 0.316   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.61, mean=12.81, max.=22.23) deg.
Tholen spectral type spec_T CPF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

690 Wratislavia (A909 UE)          Discovered 1909-Oct-16 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A909 UE = 1942 XH = A902 LA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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