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 ]  
74363 (1998 WB23)
Classification: Main-belt Asteroid          SPK-ID: 2074363
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195943928123134 3.6138e-08  
a 2.63891043451442 8.8569e-09 au
q 2.059420499961148 9.5455e-08 au
i 2.90090054773032 3.8407e-06 deg
node 236.2079000490523 7.8626e-05 deg
peri 95.68004574450578 7.9148e-05 deg
M 338.980847535184 7.9944e-06 deg
tp 2458691.921449343825
(2019-Jul-27.42144934)
3.4781e-05 TDB
period 1565.796804550888
4.29
7.8828e-06
2.158e-08
d
yr
n .2299148899484806 1.1575e-09 deg/d
Q 3.218400369067692 1.0802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52527  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:46:22  

Additional Information
 Earth MOID = 1.05053 au 
 Jupiter MOID = 2.16388 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO449469  
diameter diameter 4.470 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74363 (1998 WB23)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WB23 = 2001 HZ64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-07 19:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin