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 ]  
159865 Silvialonso (2004 PX66)
Classification: Main-belt Asteroid          SPK-ID: 2159865
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1967497394745278 5.195e-08  
a 2.351939443987454 1.4274e-08 au
q 1.889195971123056 1.2874e-07 au
i 11.11071597576856 5.0058e-06 deg
node 263.9877421647719 2.6217e-05 deg
peri 36.98227129962923 2.9626e-05 deg
M 221.7125491375187 1.5595e-05 deg
tp 2459706.578515526229
(2022-May-07.07851553)
5.9989e-05 TDB
period 1317.460582671509
3.61
1.1993e-05
3.284e-08
d
yr
n .2732529570410389 2.4875e-09 deg/d
Q 2.814682916851851 1.7082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      453  
   data-arc span      7030 days (19.25 yr)  
   first obs. used      2001-12-18  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56816  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:58:56  

Additional Information
 Earth MOID = .883634 au 
 Jupiter MOID = 2.41217 au 
 T_jup = 3.506 
[ 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 16.08   n/a E2021B55  

159865 Silvialonso           Discovered 2004 Aug. 12 by J. Manteca at Begues.
Silvia Alonso Perez (b. 1976), of La Laguna, Tenerife, was responsible for teaching astrometry to many Spanish amateur astronomers. This was the beginning of the Minor Planet Center's assignment of many new observatory codes in Spain.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-19 00:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin