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JPL Small-Body Database Browser
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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 ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09413063619480608 3.9144e-08  
a 3.201317691226387 1.7241e-08 au
q 2.899975620289559 1.2284e-07 au
i 10.01753393386383 4.3445e-06 deg
node 258.9377616574033 2.4391e-05 deg
peri 156.6451562717602 3.3639e-05 deg
M 242.5813071947676 2.4368e-05 deg
tp 2459682.880062392222
(2022-Apr-13.38006239)
0.00014364 TDB
period 2092.144075123386
5.73
1.6901e-05
4.627e-08
d
yr
n .1720722794766267 1.39e-09 deg/d
Q 3.502659762163214 1.8863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3234  
   data-arc span      42893 days (117.43 yr)  
   first obs. used      1902-11-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37427  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:12:11  

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

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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 1.92121659552974 1.92121582733522 1.92121736372785 3.59223802963837 3.46733581589128 2415063.230785198 2.11457796141134 159.837121951517 16.379230939563 77.1854853440384 3478510.24657891 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2009-May-10 20:26 < 00:01 Jupiter 1.94893220755763 1.94893172367391 1.94893269144135 3.47264928799781 3.34515710611981 2454962.351500054 0.266381553315956 90.1514875721067 21.9690453366539 89.465578054538 3771338.04033003 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2020-Apr-12 03:15 < 00:01 Jupiter 1.83078285674666 1.83078245510902 1.83078325838429 3.63151449391976 3.50179749438405 2458951.635128809 0.314889064471689 84.6508215900299 17.9007473874658 88.0462286810796 3732981.28276419 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2031-Apr-11 08:34 < 00:01 Jupiter 1.83267499138328 1.83267457648904 1.83267540627772 3.70587787302606 3.57899068379965 2462967.856663069 0.519624971191238 74.8148156259585 15.4884043490755 81.4650035108786 3554802.72723464 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2042-Apr-12 18:33 < 00:01 Jupiter 1.96161355077019 1.96161297728969 1.96161412425113 3.6258799882235 3.50476931448649 2466987.272617369 0.794416881717681 72.4147602722753 16.2468551081517 71.7516174551592 3575396.50694217 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2151-Jul-02 05:22 00:03 Jupiter 1.90020038079399 1.90019945600107 1.90020130559003 3.32434780447208 3.18744093256108 2506878.723887658 3.18327880935513 180.576423135059 30.772047903532 77.7248024951783 3488648.91476345 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2162-Jun-09 14:49 00:03 Jupiter 1.8155692418618 1.81556881941023 1.81556966431389 3.59304827084014 3.46077019918014 2510874.117340400 3.11989917877947 175.297450167915 19.0679123995577 -87.404069028873 3238163.90782444 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12
2173-Jun-10 19:14 00:03 Jupiter 1.85570715592804 1.85570623445275 1.85570807741566 3.72017467615479 3.59538812983631 2514893.301090914 3.28291335605199 268.608738501732 15.5071433693619 81.0361502125832 3494671.88685665 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:12:27 2020-May-20 01:12

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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