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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .094130635580236 3.9737e-08  
a 3.20131769101317 1.7449e-08 au
q 2.899975622063847 1.2437e-07 au
i 10.01753395413621 4.3562e-06 deg
node 258.9377648666953 2.4644e-05 deg
peri 156.6451529318543 3.3863e-05 deg
M 242.5813074578168 2.4371e-05 deg
tp 2459682.880060795336
(2022-Apr-13.38006080)
0.00014364 TDB
period 2092.144074914372
5.73
1.7105e-05
4.683e-08
d
yr
n .1720722794938175 1.4068e-09 deg/d
Q 3.502659759962494 1.9091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3170  
   data-arc span      42667 days (116.82 yr)  
   first obs. used      1902-11-21  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:36:25  

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 1.921216601045 1.92121583259777 1.92121736949583 3.59223802496192 3.4673358114114 2415063.230798462 2.1315863504781 161.138300845418 16.5896061207598 77.3050295703436 3452128.57933646 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2009-May-10 20:26 < 00:01 Jupiter 1.94893220064299 1.94893171401892 1.94893268726695 3.47264935327673 3.34515717342572 2454962.351501667 0.269938182799539 90.2594180015124 22.1460162890519 89.4655863789841 3768394.86616671 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2020-Apr-12 03:15 < 00:01 Jupiter 1.83078285212198 1.83078244971944 1.83078325452451 3.63151454949875 3.50179755168811 2458951.635127465 0.323618389390619 85.2234409007752 17.9590148312145 88.1622701706748 3726437.134852 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2031-Apr-11 08:34 < 00:01 Jupiter 1.83267499507722 1.83267457394777 1.83267541620699 3.70587788818352 3.57899069975478 2462967.856659458 0.53152631324662 76.1301894253741 15.6095227435203 81.3607978476199 3530666.36505325 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2042-Apr-12 18:33 < 00:01 Jupiter 1.96161356231188 1.96161297466168 1.96161414996264 3.62587996658921 3.50476929282951 2466987.272616201 0.810219804453488 73.5390165199621 16.4393618551009 71.4504615362104 3538698.19482871 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2151-Jul-02 05:22 00:03 Jupiter 1.90020036969224 1.90019943390568 1.90020130548204 3.32434789880534 3.18744103012909 2506878.723868514 3.22587249411283 182.456018839888 30.9916664198105 77.6421913640452 3489400.1278763 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2162-Jun-09 14:49 00:03 Jupiter 1.81556923762431 1.81556881479367 1.81556966045545 3.59304832278426 3.46077025279504 2510874.117333287 3.16089986466232 177.708196301639 19.0778687949731 -87.4289635131868 3226478.11799305 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2173-Jun-10 19:14 00:03 Jupiter 1.85570716406691 1.85570622330353 1.85570810484306 3.72017468978832 3.59538814449982 2514893.301081048 3.32607600406269 272.358369143817 15.6632935265008 80.9674905951846 3470232.99975395 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36

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-Feb-25 11:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin