Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .187094314979509 3.8394e-08  
a 3.19411906448108 1.9921e-08 AU
q 2.596517546149002 1.2478e-07 AU
i 15.72664373987653 5.8349e-06 deg
node 166.4449525538266 1.7985e-05 deg
peri 132.5361765418052 2.3391e-05 deg
M 28.59929724182538 1.627e-05 deg
tp 2456834.855149585868
(2014-Jun-26.35514959)
9.3436e-05 JED
period 2085.091309931828
5.71
1.9506e-05
5.34e-08
d
yr
n .1726543093269954 1.6152e-09 deg/d
Q 3.791720582813158 2.3648e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      36259 days (99.27 yr)  
   first obs. used      1915-04-25  
   last obs. used      2014-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54331  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:53:33  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-29 20:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin