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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774234796497761 1.7368e-08  
a 3.150337913338798 9.3242e-09 au
q 2.591393998681613 5.5018e-08 au
i 11.24671316754024 4.5563e-07 deg
node 253.0783334557629 3.9099e-06 deg
peri 114.2346758305428 8.835e-06 deg
M 336.4228348354014 5.1982e-06 deg
tp 2459334.259064198076
(2021-Apr-29.75906420)
2.961e-05 TDB
period 2042.368655227903
5.59
9.0673e-06
2.482e-08
d
yr
n .1762659248997476 7.8255e-10 deg/d
Q 3.709281827995982 1.0978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3851  
   data-arc span      43317 days (118.60 yr)  
   first obs. used      1902-06-03  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34003  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:45:13  

Additional Information
 Earth MOID = 1.61502 au 
 Jupiter MOID = 1.92617 au 
 T_jup = 3.154 
[ 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 8.06   n/a E2021B10 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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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