Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
120771 (1998 DD8)
Classification: Main-belt Asteroid          SPK-ID: 2120771
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2679652162493346 2.366e-07  
a 2.567589111412339 5.6054e-08 AU
q 1.879564539933295 6.4261e-07 AU
i 11.80922936483836 9.5598e-06 deg
node 126.6212655038333 4.0802e-05 deg
peri 265.7372483868205 6.523e-05 deg
M 110.2474326364333 3.7793e-05 deg
tp 2456540.293552634193
(2013-Sep-04.79355263)
0.0001715 JED
period 1502.749924327402
4.11
4.9211e-05
1.347e-07
d
yr
n .2395608172538276 7.8449e-09 deg/d
Q 3.255613682891384 7.1075e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      380  
   data-arc span      7346 days (20.11 yr)  
   first obs. used      1994-02-06  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59793  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 02:07:54  

Additional Information
 Earth MOID = .928243 AU 
 T_jup = 3.351 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO280592  

120771 (1998 DD8)          Discovered 1998-Feb-21 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 DD8 = 2001 XY86 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Nov-29 07:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin