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805 Hormuthia (1915 WW)
Classification: Main-belt Asteroid          SPK-ID: 2000805
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870943188057358 3.8218e-08  
a 3.194119057107717 1.8245e-08 AU
q 2.59651752793373 1.2346e-07 AU
i 15.7266440102609 5.7188e-06 deg
node 166.4449546690326 1.7339e-05 deg
peri 132.5361701801155 2.2456e-05 deg
M 28.59930374618023 1.4676e-05 deg
tp 2456834.855112486730
(2014-Jun-26.35511249)
8.4413e-05 JED
period 2085.091302711934
5.71
1.7865e-05
4.891e-08
d
yr
n .172654309924833 1.4793e-09 deg/d
Q 3.791720586281705 2.1658e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1413  
   data-arc span      36353 days (99.53 yr)  
   first obs. used      1915-04-25  
   last obs. used      2014-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52915  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:44:09  

Additional Information
 Earth MOID = 1.61146 AU 
 T_jup = 3.111 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.82 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
diameter diameter 66.94 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 9.510 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Pilcher, F.; Benishek, V. (2009) Minor Planet Bul. 36, 29-30.]
geometric albedo albedo 0.0465   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
B-V BV .700 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=13.05 deg.
U-B UB .277 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=13.05 deg.
Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

805 Hormuthia (1915 WW)          Discovered 1915-Apr-17 by Wolf, M. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1915 WW = 1928 QG = 1950 FU = 1950 GD = A911 UA = A917 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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