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 ]  
15931 (1997 WK45)
Classification: Main-belt Asteroid          SPK-ID: 2015931
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1835281592691571 3.1806e-08  
a 3.175361979949403 1.9339e-08 au
q 2.592593640756023 1.0607e-07 au
i 2.076467912593919 3.8347e-06 deg
node 71.3592155852955 0.00013031 deg
peri 14.81999478282791 0.00013101 deg
M 334.6101088013117 1.409e-05 deg
tp 2459146.262774641087
(2020-Oct-23.76277464)
8.1527e-05 TDB
period 2066.751624107095
5.66
1.8881e-05
5.169e-08
d
yr
n .1741863878566114 1.5913e-09 deg/d
Q 3.758130319142783 2.2888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      24902 days (68.18 yr)  
   first obs. used      1951-11-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:30:51  

Additional Information
 Earth MOID = 1.60894 au 
 Jupiter MOID = 1.47284 au 
 T_jup = 3.173 
[ 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 13.1   n/a MPO365443  
diameter diameter 10.466 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15931 (1997 WK45)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WK45 = 1951 WE = 2000 JH62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-08 22:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin