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 ]  
39861 (1998 DO8)
Classification: Main-belt Asteroid          SPK-ID: 2039861
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1002489840075291 4.5981e-08  
a 2.448821059612825 1.4373e-08 au
q 2.203329236370398 1.073e-07 au
i 5.51496895311329 4.0005e-06 deg
node 306.9312938075194 4.9945e-05 deg
peri 6.965649640466514 5.7837e-05 deg
M 39.17588038582296 3.2771e-05 deg
tp 2458448.182336788944
(2018-Nov-25.68233679)
0.00012667 TDB
period 1399.696910852923
3.83
1.2323e-05
3.374e-08
d
yr
n .2571985386326455 2.2644e-09 deg/d
Q 2.694312882855251 1.5814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      897  
   data-arc span      10382 days (28.42 yr)  
   first obs. used      1991-07-02  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:11:30  

Additional Information
 Earth MOID = 1.18854 au 
 Jupiter MOID = 2.53192 au 
 T_jup = 3.484 
[ 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 15.4   n/a MPO358991  
diameter diameter 2.016 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39861 (1998 DO8)          Discovered 1998-Feb-21 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 DO8 = 2000 WB119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-20 15:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin