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
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
9217 Kitagawa (1995 WN)
Classification: Main-belt Asteroid          SPK-ID: 2009217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1580397427717538 5.6925e-08  
a 2.325269020620971 1.0178e-08 au
q 1.957784102726905 1.3308e-07 au
i 4.648079217407587 4.6564e-06 deg
node 80.32882782089438 7.5158e-05 deg
peri 257.9761082288309 7.6785e-05 deg
M 34.6705343038431 1.7599e-05 deg
tp 2458875.771336428698
(2020-Jan-27.27133643)
6.3117e-05 TDB
period 1295.114707265746
3.55
8.5032e-06
2.328e-08
d
yr
n .277967656440281 1.825e-09 deg/d
Q 2.692753938515037 1.1786e-08 au
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      9773 days (26.76 yr)  
   first obs. used      1991-08-06  
   last obs. used      2018-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57079  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 16:50:08  

Additional Information
 Earth MOID = .955004 au 
 Jupiter MOID = 2.6817 au 
 T_jup = 3.554 
[ 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 15.3   n/a MPO439149  
diameter diameter 2.334 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.296   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9217 Kitagawa           Discovered 1995 Nov. 16 by T. Kobayashi at Oizumi.
Ryuji Kitagawa (1949-2009) was a professor at Hiroshima University. From his research of clay mineralogy, he clarified the mechanism of weathering of granite and generation of landslide and slope failure. In addition to his own research, he mentored many other scientists.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

[ show close-approach data ]
Alternate Designations
 1995 WN = 1994 JR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-29 00:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin