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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1871984160867138 3.5306e-08  
a 3.192293271669127 1.5895e-08 au
q 2.594701027528393 1.1199e-07 au
i 15.72769658698826 5.108e-06 deg
node 166.4460228497543 1.6229e-05 deg
peri 132.3616829526339 2.0799e-05 deg
M 132.4023678576313 1.3099e-05 deg
tp 2456834.293464690174
(2014-Jun-25.79346469)
7.3857e-05 JED
period 2083.303774507528
5.70
1.556e-05
4.26e-08
d
yr
n .1728024517620338 1.2906e-09 deg/d
Q 3.789885515809861 1.887e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1685  
   data-arc span      36835 days (100.85 yr)  
   first obs. used      1915-04-25  
   last obs. used      2016-02-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50642  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:27:14  

Additional Information
 Earth MOID = 1.60843 au 
 Jupiter MOID = 1.7152 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 LCDB (Rev. 2016-February); Warner et al., 2009 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
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 2016-Apr-29 21:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin