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
JPL Small-Body Database Browser
Search: [ help ]  
192867 (1999 WS18)
Classification: Main-belt Asteroid          SPK-ID: 2192867
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05339931731471458 6.7936e-08  
a 2.685135471696733 2.3945e-08 au
q 2.541751070610603 1.9515e-07 au
i 5.986317884421778 8.5536e-06 deg
node 52.78156950038719 5.3766e-05 deg
peri 276.5994545333452 9.6227e-05 deg
M 358.4942146336184 7.7985e-05 deg
tp 2459207.222151576421
(2020-Dec-23.72215158)
0.00034813 TDB
period 1607.117867884969
4.40
2.1497e-05
5.886e-08
d
yr
n .2240034830013894 2.9964e-09 deg/d
Q 2.828519872782862 2.5224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      9952 days (27.25 yr)  
   first obs. used      1993-04-25  
   last obs. used      2020-07-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54962  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:17:53  

Additional Information
 Earth MOID = 1.53754 au 
 Jupiter MOID = 2.34529 au 
 T_jup = 3.365 
[ 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 16.42   n/a E2021B55  
diameter diameter 2.955 km 0.557 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

192867 (1999 WS18)          Discovered 1999-Nov-30 by Spacewatch at Kitt Peak
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-11 17:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin