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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
85809 (1998 WU12)
Classification: Main-belt Asteroid          SPK-ID: 2085809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2094111556827606 4.8618e-08  
a 2.756162455988466 2.0275e-08 au
q 2.178991290830485 1.3593e-07 au
i 9.727002655008311 6.0765e-06 deg
node 35.57111085026447 2.7064e-05 deg
peri 310.3378400310036 3.0064e-05 deg
M 27.10763265931324 1.6629e-05 deg
tp 2459270.652458235753
(2021-Feb-25.15245824)
7.638e-05 TDB
period 1671.304743004321
4.58
1.8442e-05
5.049e-08
d
yr
n .2154005734183866 2.3768e-09 deg/d
Q 3.333333621146447 2.4521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      8277 days (22.66 yr)  
   first obs. used      1998-11-11  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:29  

Additional Information
 Earth MOID = 1.18679 au 
 Jupiter MOID = 2.15054 au 
 T_jup = 3.291 
[ 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 14.96   n/a E2021B10  
diameter diameter 5.925 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85809 (1998 WU12)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 WU12 = 2003 YE150 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 16:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin