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 ]  
13987 (1992 WK9)
Classification: Main-belt Asteroid          SPK-ID: 2013987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208255867715916 4.3057e-08  
a 3.162222852323272 1.8898e-08 au
q 2.50367138830159 1.3795e-07 au
i .8401106936381942 3.976e-06 deg
node 54.14540560020929 0.00034497 deg
peri 324.3881256635739 0.00034511 deg
M 340.8051826040565 1.2424e-05 deg
tp 2459110.013742401916
(2020-Sep-17.51374240)
7.1353e-05 TDB
period 2053.937083716239
5.62
1.8412e-05
5.041e-08
d
yr
n .1752731390138997 1.5712e-09 deg/d
Q 3.820774316344954 2.2834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      9839 days (26.94 yr)  
   first obs. used      1992-10-19  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56648  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:46:00  

Additional Information
 Earth MOID = 1.50588 au 
 Jupiter MOID = 1.64157 au 
 T_jup = 3.170 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456304.5 (2013-Jan-12.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2163348250015976 4.4722e-08  
q 2.474377780570235 1.4558e-07 au
tp 2457044.281868969494
(2015-Jan-21.78186897)
5.6641e-05 TDB
node 53.96489798874208 0.00033883 deg
peri 323.0269990045861 0.00033897 deg
i .8561318826284025 4.0061e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      9839 days (26.94 yr)  
   first obs. used      1992-10-19  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56648  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:46:00  

Additional Information
 Jupiter MOID = 1.64157 au 
 T_jup = 3.170 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.000074419988389E-15 -6.478990820124172E-15 -1.126153845650329E-12 -1.790122016544249E-15 -1.899087320327933E-13 -5.418173206883721E-16
q -6.478990820124172E-15 2.11937310805353E-14 3.900517697345864E-12 1.084371421091463E-14 6.376496295270174E-13 1.785945456707307E-15
tp -1.126153845650329E-12 3.900517697345864E-12 3.208220176857551E-9 2.938992358060045E-12 5.910556901832569E-10 5.392831557964856E-13
node -1.790122016544249E-15 1.084371421091463E-14 2.938992358060045E-12 1.148054969768624E-7 -1.147922181451586E-7 -4.234028985203125E-10
peri -1.899087320327933E-13 6.376496295270174E-13 5.910556901832569E-10 -1.147922181451586E-7 1.149003961637383E-7 4.234509461826046E-10
i -5.418173206883721E-16 1.785945456707307E-15 5.392831557964856E-13 -4.234028985203125E-10 4.234509461826046E-10 1.604865410419542E-11

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 13.8   n/a MPO439190  
diameter diameter 8.501 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13987 (1992 WK9)          Discovered 1992-Nov-16 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 WK9 = 1981 UP = 1986 PS 
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-30 08:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin