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690 Wratislavia (1909 HZ)
Classification: Main-belt Asteroid          SPK-ID: 2000690
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819874570276193 3.9569e-08  
a 3.146191342219628 1.5794e-08 AU
q 2.573623980526766 1.2482e-07 AU
i 11.26472453352699 5.4614e-06 deg
node 253.1744279543418 2.4636e-05 deg
peri 114.8903203124011 2.7851e-05 deg
M 307.4304376488997 1.5112e-05 deg
tp 2457298.151437977420
(2015-Oct-02.65143798)
8.667e-05 JED
period 2038.337640252933
5.58
1.5349e-05
4.202e-08
d
yr
n .1766145082594502 1.3299e-09 deg/d
Q 3.71875870391249 1.8669e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      41022 days (112.31 yr)  
   first obs. used      1902-06-03  
   last obs. used      2014-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55126  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:47:27  

Additional Information
 Earth MOID = 1.59874 AU 
 T_jup = 3.154 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.02 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Sada, P.V. (2000) Minor Planet Bul. 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 Bul. 32, 38-39.]
[Michalowski, T.; Kaasalainen, M.; Polinska, M.; Marciniak, A.; et al. (2006) Astron. Astrophys. 459, 663-668.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0604   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV .675 mag .009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=4.61, mean=12.81, max.=22.23) deg.
U-B UB .316 mag .019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 (1909 HZ)          Discovered 1909-Oct-16 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1909 HZ = 1942 XH = A902 LA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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