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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09413062387243723 3.3571e-08  
a 3.201317686186443 1.5264e-08 au
q 2.899975655171846 1.0871e-07 au
i 10.0175361442278 4.0637e-06 deg
node 258.9377436749339 2.1755e-05 deg
peri 156.6451765516015 3.1555e-05 deg
M 242.5813064489196 2.4313e-05 deg
tp 2459682.880065115285
(2022-Apr-13.38006512)
0.00014346 TDB
period 2092.144070182786
5.73
1.4963e-05
4.097e-08
d
yr
n .1720722798829756 1.2307e-09 deg/d
Q 3.502659717201041 1.6701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3667  
   data-arc span      43095 days (117.99 yr)  
   first obs. used      1902-11-21  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:00  

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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 1.9212165615084 1.92121579688436 1.92121732613571 3.59223878150034 3.46733659258559 2415063.230890502 1.95954260171221 147.9322035714 13.9969681037543 75.9737529922275 3932680.2986419 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2009-May-10 20:26 < 00:01 Jupiter 1.94893227749091 1.94893182855941 1.94893272642231 3.47264911353084 3.34515692966544 2454962.351482968 0.234615567365023 87.6203100489237 19.7494902140099 88.7261872458585 3798153.4204735 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2020-Apr-12 03:15 < 00:01 Jupiter 1.83078291406707 1.83078252543636 1.83078330269778 3.63151468947872 3.50179770132366 2458951.635090024 0.226973171841154 75.7056321679227 16.950085191662 86.2541328981152 3832763.90657126 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2031-Apr-11 08:34 < 00:01 Jupiter 1.83267503013135 1.83267467716267 1.83267538310013 3.70587835482711 3.57899118541247 2462967.856604979 0.403475914177722 59.9593953636719 14.1532420655263 82.6274739909967 3890765.35826766 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2042-Apr-12 18:32 < 00:01 Jupiter 1.96161359063791 1.96161315641109 1.96161402486507 3.62588062268355 3.50476997337489 2466987.272557065 0.642545757508056 61.7741354151884 13.9351853195713 75.3796633984235 4101518.88488756 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2151-Jul-02 05:22 00:03 Jupiter 1.90020039671601 1.90019957765983 1.90020121577457 3.32434782202346 3.18744095203812 2506878.723693803 2.78785426736591 162.87965774919 27.3697658604172 78.2656611818088 3498453.41079875 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2162-Jun-09 14:49 00:03 Jupiter 1.8155692896656 1.81556887578483 1.81556970354677 3.59304863294995 3.46077057868 2510874.117146074 2.739520615836 150.669469592532 18.8090969831476 -87.0559835803902 3446139.07517488 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56
2173-Jun-10 19:13 00:03 Jupiter 1.85570724771654 1.85570651449382 1.85570798094822 3.72017520692845 3.59538868531114 2514893.300892043 2.88219858882872 233.009407834282 13.5733349098408 81.8263629540294 3898205.93783545 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:09 2020-Dec-18 01:56

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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