Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
6868 Seiyauyeda (1992 HD)
Classification: Main-belt Asteroid          SPK-ID: 2006868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1505599642276271 3.6184e-08  
a 2.659475727859838 9.1075e-09 au
q 2.259065157409018 9.5884e-08 au
i 3.378640702146531 3.2777e-06 deg
node 120.0389446823652 6.7997e-05 deg
peri 84.60590807520272 6.8817e-05 deg
M 180.3485658136042 1.2477e-05 deg
tp 2459791.034196632317
5.6472e-05 TDB
period 1584.136035854619
n .2272532104894546 1.1674e-09 deg/d
Q 3.059886298310658 1.0479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2566  
   data-arc span      42222 days (115.60 yr)  
   first obs. used      1905-03-26  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:32:28  

Additional Information
 Earth MOID = 1.25834 au 
 Jupiter MOID = 1.90333 au 
 T_jup = 3.368 
[ 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 12.8   n/a MPO347580  
diameter diameter 14.401 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.078   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

6868 Seiyauyeda           Discovered 1992 Apr. 22 by Y. Kushida and O. Muramatsu at the Yatsugatake South Base Observatory.
Seiya Uyeda (b. 1929), a professor emeritus at Tokyo University, has greatly contributed to the study of geophysics and electromagnetic earthquake prediction.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1992 HD = 1973 YU3 = 1976 SN9 = 1979 HR4 = A905 FA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Nov-24 11:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin