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 ]  
85309 (1994 WO4)
Classification: Main-belt Asteroid          SPK-ID: 2085309
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .13599970977581 5.1683e-08  
a 3.102487901555314 2.7269e-08 au
q 2.680550447360829 1.6865e-07 au
i 6.766654471946147 5.2306e-06 deg
node 142.1881262139182 4.2907e-05 deg
peri 197.8252220620873 4.6263e-05 deg
M 306.7627743852588 1.846e-05 deg
tp 2459295.672902438796
(2021-Mar-22.17290244)
0.00010396 TDB
period 1996.013947964688
5.46
2.6316e-05
7.205e-08
d
yr
n .1803594610984998 2.3779e-09 deg/d
Q 3.524425355749798 3.0978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      8981 days (24.59 yr)  
   first obs. used      1994-11-26  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:29:49  

Additional Information
 Earth MOID = 1.6726 au 
 Jupiter MOID = 1.86255 au 
 T_jup = 3.196 
[ 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 15.0   n/a MPO436372  
diameter diameter 2.887 km 0.746 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85309 (1994 WO4)          Discovered 1994-Nov-26 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1994 WO4 = 1995 YN13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-01 12:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin