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 ]  
14638 (1998 WQ1)
Classification: Main-belt Asteroid          SPK-ID: 2014638
[ 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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485980967905416 3.6121e-08  
a 3.139275302807893 1.8924e-08 au
q 2.672784967509089 1.1645e-07 au
i 1.161251574134162 4.8136e-06 deg
node 195.9442023033905 0.00021338 deg
peri 255.733743303046 0.00021403 deg
M 295.5412404124788 1.7458e-05 deg
tp 2459364.265891555229
(2021-May-29.76589156)		 9.9994e-05 TDB
period 2031.620245221638
5.56		 1.8371e-05
5.03e-08		 d
yr
n .1771984704556466 1.6023e-09 deg/d
Q 3.605765638106698 2.1737e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1164  
   data-arc span      9493 days (25.99 yr)  
   first obs. used      1993-12-09  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:48:46  

Additional Information
 Earth MOID = 1.68972 au 
 Jupiter MOID = 1.58972 au 
 T_jup = 3.193 
[ 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 14.0   n/a MPO358773  
diameter diameter 8.177 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14638 (1998 WQ1)          Discovered 1998-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WQ1 = 1997 SZ28 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-21 22:50 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin