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 ]  
118326 (1998 YR20)
Classification: Main-belt Asteroid          SPK-ID: 2118326
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418334774361117 4.193e-08  
a 2.431725706736849 1.0805e-08 au
q 2.086825593579575 1.0492e-07 au
i 2.402803635927627 3.6957e-06 deg
node 72.89905669558618 0.00012206 deg
peri 41.47620030627255 0.00012312 deg
M 281.1305275430682 1.7014e-05 deg
tp 2459503.942732749459
(2021-Oct-16.44273275)
6.6031e-05 TDB
period 1385.065480810175
3.79
9.2315e-06
2.527e-08
d
yr
n .2599155094020703 1.7323e-09 deg/d
Q 2.776625819894122 1.2337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      8047 days (22.03 yr)  
   first obs. used      1998-12-25  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:44  

Additional Information
 Earth MOID = 1.10391 au 
 Jupiter MOID = 2.31358 au 
 T_jup = 3.492 
[ 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 16.66   n/a E2021B55  

118326 (1998 YR20)          Discovered 1998-Dec-25 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 YR20 = 2003 CW7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 23:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin