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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09343427108218753 3.3324e-08  
a 3.197688927184985 1.5637e-08 au
q 2.898915193125874 1.076e-07 au
i 10.00188153928547 4.0481e-06 deg
node 258.8464503844815 2.1816e-05 deg
peri 157.549357315779 3.1785e-05 deg
M 276.0865712529621 2.4727e-05 deg
tp 2459687.334909518811
(2022-Apr-17.83490952)
0.00014492 TDB
period 2088.587846351809
5.72
1.532e-05
4.194e-08
d
yr
n .1723652661432563 1.2643e-09 deg/d
Q 3.496462661244096 1.7098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3712  
   data-arc span      43129 days (118.08 yr)  
   first obs. used      1902-11-21  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35114  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:49:35  

Additional Information
 Earth MOID = 1.91363 au 
 Jupiter MOID = 1.81846 au 
 T_jup = 3.164 
[ 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 9.76   n/a E2021B10  
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

[ show close-approach data ]
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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