Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
764 Gedania (A913 SF)
Classification: Outer 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09413062841259727 3.4466e-08  
a 3.201317688022855 1.5569e-08 au
q 2.899975642300901 1.1096e-07 au
i 10.01753585416324 4.1583e-06 deg
node 258.9377449232121 2.2102e-05 deg
peri 156.6451746089871 3.1797e-05 deg
M 242.5813065103833 2.4319e-05 deg
tp 2459682.880065345251
(2022-Apr-13.38006535)
0.00014349 TDB
period 2092.144071982999
5.73
1.5262e-05
4.179e-08
d
yr
n .1720722797349137 1.2552e-09 deg/d
Q 3.50265973374481 1.7034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3459  
   data-arc span      42993 days (117.71 yr)  
   first obs. used      1902-11-21  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36196  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:21:33  

Additional Information
 Earth MOID = 1.91548 au 
 Jupiter MOID = 1.81509 au 
 T_jup = 3.163 
[ 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-August); 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 1.92121656561339 1.92121580068117 1.921217330549 3.59223864912721 3.46733645571573 2415063.230853721 1.98154723387034 149.621536641478 14.4333839383329 76.1722362099545 3808749.1621799 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2009-May-10 20:26 < 00:01 Jupiter 1.94893227327328 1.94893181688546 1.9489327296611 3.47264911146838 3.34515692724321 2454962.351490629 0.239446731849686 88.5349486842913 20.2093045786888 89.060941894521 3795670.06065932 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2020-Apr-12 03:15 < 00:01 Jupiter 1.83078290543955 1.83078251408704 1.83078329679205 3.63151463299231 3.50179764212221 2458951.635097343 0.241469094945721 78.027024619625 17.150979393269 86.7040981897027 3810763.86755109 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2031-Apr-11 08:34 < 00:01 Jupiter 1.83267501373949 1.83267465046837 1.8326753770106 3.70587826352952 3.57899108972305 2462967.856630222 0.421710163584955 62.6416408176006 14.387114132967 82.3873007700865 3810446.94261519 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2042-Apr-12 18:33 < 00:01 Jupiter 1.96161356536976 1.96161310883975 1.96161402190011 3.62588051416677 3.50476985952119 2466987.272572910 0.665937499804394 63.2423889986197 14.3853756519175 74.6910226021195 3971926.9452801 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2151-Jul-02 05:22 00:03 Jupiter 1.90020041552361 1.90019958040597 1.90020125064362 3.324347748877 3.18744087713403 2506878.723772362 2.84590440192394 165.685980128908 28.2261605846384 78.2927625098159 3495149.70258061 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2162-Jun-09 14:49 00:03 Jupiter 1.81556928349647 1.81556886783288 1.81556969916048 3.59304851517825 3.46077045594876 2510874.117222081 2.79537904099337 154.838987419559 18.8590543815009 -87.1463845301585 3388166.42369564 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2173-Jun-10 19:13 00:03 Jupiter 1.85570720688579 1.85570644375743 1.85570797002365 3.72017510288048 3.59538857485864 2514893.300967253 2.94111560511754 238.337931150967 13.9475245907999 81.6797680946045 3789403.13029774 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22

Alternate Designations
 A913 SF = A902 WD = A908 YE = A918 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-26 00:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin