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
JPL Small-Body Database Browser
Search: [ help ]  
66113 (1998 SG55)
Classification: Main-belt Asteroid          SPK-ID: 2066113
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554524509468803 3.8691e-08  
a 3.108684652799779 1.5978e-08 au
q 2.625432004301102 1.1951e-07 au
i .8906935674518769 4.2442e-06 deg
node 148.0969884925828 0.00025282 deg
peri 228.9984866050609 0.00025333 deg
M 10.68833791746328 1.3176e-05 deg
tp 2459141.061053192509
(2020-Oct-18.56105319)
7.3387e-05 TDB
period 2001.997037886982
5.48
1.5435e-05
4.226e-08
d
yr
n .1798204458783634 1.3863e-09 deg/d
Q 3.591937301298457 1.8462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      987  
   data-arc span      9072 days (24.84 yr)  
   first obs. used      1996-04-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47419  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:19:34  

Additional Information
 Earth MOID = 1.62579 au 
 Jupiter MOID = 1.87136 au 
 T_jup = 3.201 
[ 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 MPO359202  

66113 (1998 SG55)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SG55 = 2002 JO126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-15 17:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin