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 ]  
85311 (1994 WK8)
Classification: Main-belt Asteroid          SPK-ID: 2085311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09676968035470994 3.8712e-08  
a 2.761320262214314 1.6127e-08 au
q 2.494108183082851 1.0772e-07 au
i 8.194715675752255 4.0814e-06 deg
node 117.1195280151456 3.2716e-05 deg
peri 48.7424387895873 4.0285e-05 deg
M 191.3281433880053 2.2856e-05 deg
tp 2460181.760443569892
(2023-Aug-25.26044357)
0.00010722 TDB
period 1675.9983874219
4.59
1.4682e-05
4.02e-08
d
yr
n .2147973427073334 1.8817e-09 deg/d
Q 3.028532341345777 1.7687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      10782 days (29.52 yr)  
   first obs. used      1991-01-13  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55188  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:09:47  

Additional Information
 Earth MOID = 1.51198 au 
 Jupiter MOID = 1.97622 au 
 T_jup = 3.320 
[ 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 15.12   n/a E2021B10  
diameter diameter 3.734 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.139   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85311 (1994 WK8)          Discovered 1994-Nov-28 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1994 WK8 = 2001 KJ55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-26 16:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin