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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
46687 (1997 AP18)
Classification: Main-belt Asteroid          SPK-ID: 2046687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142012029710059 5.0178e-08  
a 2.365186674134108 9.5797e-09 au
q 2.029301713897139 1.2012e-07 au
i 3.109941994337021 3.8843e-06 deg
node 76.7034901715833 9.4107e-05 deg
peri 96.65719602743081 9.5048e-05 deg
M 356.8000859526767 1.5098e-05 deg
tp 2458612.309523485903
(2019-May-08.80952349)
5.575e-05 TDB
period 1328.607078831247
3.64
8.0719e-06
2.21e-08
d
yr
n .2709604711098527 1.6462e-09 deg/d
Q 2.701071634371077 1.094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      9658 days (26.44 yr)  
   first obs. used      1992-11-27  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53938  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:02  

Additional Information
 Earth MOID = 1.03761 au 
 Jupiter MOID = 2.26629 au 
 T_jup = 3.533 
[ 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 15.7   n/a MPO267861  

46687 (1997 AP18)          Discovered 1997-Jan-15 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin