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 ]  
20418 (1998 SH71)
Classification: Main-belt Asteroid          SPK-ID: 2020418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16660452644067 2.8184e-08  
a 2.394095022887071 7.2448e-09 au
q 1.995227955345006 6.9713e-08 au
i 2.898852148070069 3.901e-06 deg
node 144.0263970369179 5.9939e-05 deg
peri 262.7391085406342 6.135e-05 deg
M 286.0286453629963 1.1845e-05 deg
tp 2459278.517141545196
(2021-Mar-05.01714155)
4.4718e-05 TDB
period 1353.039584680026
3.70
6.1416e-06
1.681e-08
d
yr
n .2660676036947838 1.2077e-09 deg/d
Q 2.792962090429137 8.4518e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1250  
   data-arc span      15068 days (41.25 yr)  
   first obs. used      1979-07-24  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:56  

Additional Information
 Earth MOID = 1.00732 au 
 Jupiter MOID = 2.5882 au 
 T_jup = 3.509 
[ 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 15.3   n/a MPO290619  

20418 (1998 SH71)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SH71 = 1979 OF6 = 2000 ES42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-03 02:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin