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JPL Small-Body Database Browser
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764 Gedania (A913 SF)
Classification: Main-belt Asteroid          SPK-ID: 2000764
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09731023078322934 4.0272e-08  
a 3.19480886501126 1.573e-08 au
q 2.883921277048707 1.2728e-07 au
i 10.03591979812544 4.3725e-06 deg
node 258.9677541934436 2.4857e-05 deg
peri 156.1372475015724 3.3504e-05 deg
M 174.386376427161 2.3325e-05 deg
tp 2457590.140798638651
(2016-Jul-20.64079864)
0.00013264 TDB
period 2085.766789483184
5.71
1.5404e-05
4.217e-08
d
yr
n .1725983948997489 1.2747e-09 deg/d
Q 3.505696452973813 1.726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2334  
   data-arc span      42641 days (116.74 yr)  
   first obs. used      1902-11-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44677  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:11:50  

Additional Information
 Earth MOID = 1.89913 au 
 Jupiter MOID = 1.81589 au 
 T_jup = 3.165 
[ 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 9.6   n/a MPO435702  
diameter diameter 58.28 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 24.9751 h n/a LCDB (Rev. 2019-January); 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. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J.W. (2010) Minor Planet Bull. 37, 19-20.]
geometric albedo albedo 0.0840   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV 0.737   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.71, mean=1.84, max.=1.96) deg.
U-B UB 0.400   0.043 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.71, mean=1.84, max.=1.96) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

764 Gedania (A913 SF)          Discovered 1913-Sep-26 by Kaiser, F. 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
1900-Feb-12 17:32 00:02 Jupiter 1.92121669441422 1.92121592317602 1.92121746565612 3.5922389386078 3.46733676414856 2415063.230802181 2.14753452270455 162.351257479705 16.5660751641191 77.3332022522449 3455238.7275676 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2009-May-10 20:26 < 00:01 Jupiter 1.9489322693431 1.94893177985315 1.94893275883306 3.47264922903626 3.34515704902989 2454962.351478019 0.271250846566082 90.9050292678737 22.2592123276337 89.2846987778001 3728527.07664625 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2020-Apr-12 03:15 < 00:01 Jupiter 1.83078296873083 1.83078256395188 1.83078337350979 3.63151486120784 3.50179788335898 2458951.635099458 0.329781274407941 85.1392072956386 18.1048325218789 88.1248439236238 3707964.56379507 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2031-Apr-11 08:34 < 00:01 Jupiter 1.8326751176904 1.83267469688021 1.83267553850079 3.70587854933913 3.5789913929903 2462967.856622154 0.540406648989232 76.5791811333373 15.6257508291811 81.447075219376 3526023.51741159 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2042-Apr-12 18:33 < 00:01 Jupiter 1.96161366706692 1.96161307375793 1.96161426037636 3.62588084629419 3.50477020951289 2466987.272571631 0.822375897867443 74.6197904560139 16.435543023956 71.4443021172313 3541974.39834654 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2151-Jul-02 05:22 00:03 Jupiter 1.90020045707332 1.90019950503571 1.90020140911429 3.32434791675805 3.1874410552838 2506878.723819642 3.26313123076321 185.054906225059 31.0754618058378 77.515445767505 3447269.98055226 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2162-Jun-09 14:49 00:03 Jupiter 1.81556937053714 1.81556894419787 1.81556979687692 3.59304875390935 3.46077071026744 2510874.117268160 3.19639220771554 178.936871550404 19.2226555074726 -87.3438595813705 3217992.50386986 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12
2173-Jun-10 19:13 00:03 Jupiter 1.85570729980833 1.855706350783 1.85570824884674 3.72017539843711 3.59538888703025 2514893.301012421 3.36266110792853 275.254015145587 15.6580744672018 80.9711238661407 3470808.3986743 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:00 2019-Sep-23 19:12

Alternate Designations
 A913 SF = A902 WD = A908 YE = A918 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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