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 ]  
48918 (1998 OP8)
Classification: Main-belt Asteroid          SPK-ID: 2048918
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09038969765661084 4.247e-08  
a 2.262199183488635 7.5666e-09 au
q 2.057719683254065 9.7494e-08 au
i 4.397765445102277 4.0864e-06 deg
node 286.8833582788588 5.7688e-05 deg
peri 201.4158069752537 6.2388e-05 deg
M 226.7867866885242 2.3753e-05 deg
tp 2459060.374673329912
(2020-Jul-29.87467333)
8.2446e-05 TDB
period 1242.781239813441
3.40
6.2353e-06
1.707e-08
d
yr
n .2896728631452797 1.4533e-09 deg/d
Q 2.466678683723204 8.2505e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      8239 days (22.56 yr)  
   first obs. used      1997-04-10  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:16  

Additional Information
 Earth MOID = 1.07394 au 
 Jupiter MOID = 2.576 au 
 T_jup = 3.610 
[ 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 14.8   n/a MPO347859  
diameter diameter 2.674 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48918 (1998 OP8)          Discovered 1998-Jul-26 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 OP8 = 1999 XK217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin