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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .187094322178531 3.808e-08  
a 3.194119054092176 1.7676e-08 AU
q 2.596517514709269 1.2268e-07 AU
i 15.72664380060468 5.6876e-06 deg
node 166.4449549618763 1.7041e-05 deg
peri 132.5361685766597 2.2101e-05 deg
M 28.5993060243943 1.4174e-05 deg
tp 2456834.855099526072
(2014-Jun-26.35509953)
8.1577e-05 JED
period 2085.091299759158
5.71
1.7308e-05
4.739e-08
d
yr
n .1726543101693353 1.4332e-09 deg/d
Q 3.791720593475082 2.0983e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1436  
   data-arc span      36401 days (99.66 yr)  
   first obs. used      1915-04-25  
   last obs. used      2014-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53027  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:55:36  

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 LCDB (Rev. 2015-May); 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 2015-Jul-29 20:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin