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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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782746950994266 3.9173e-08  
a 3.153187286059397 1.3412e-08 au
q 2.591053784045769 1.2484e-07 au
i 11.25286299478479 4.5075e-06 deg
node 253.1227971668322 2.2915e-05 deg
peri 114.1092526272247 2.6197e-05 deg
M 301.3286749909915 1.4654e-05 deg
tp 2459333.808563999242
(2021-Apr-29.30856400)
8.4556e-05 TDB
period 2045.140160398689
5.60
1.3048e-05
3.572e-08
d
yr
n .1760270552458468 1.1231e-09 deg/d
Q 3.715320788073024 1.5803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3469  
   data-arc span      43113 days (118.04 yr)  
   first obs. used      1902-06-03  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34961  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:18:40  

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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