NEO Information Centers

NEODyS - The Near-Earth Object Dynamic Site - http://newton.dm.unipi.it/neodys/
AstDyS - The Asteroids Dynamic Site - http://hamilton.dm.unipi.it/astdys/
The Minor Planet Center - http://www.minorplanetcenter.org/iau/mpc.html
The NASA Center for Near Earth Object Studies - http://cneos.jpl.nasa.gov/
The Spaceguard Central Node - http://spaceguard.iaps.inaf.it/
JPL Solar System Dynamics - http://ssd.jpl.nasa.gov/

NEO Observing Programs

The LINEAR project - http://www.ll.mit.edu/LINEAR/
The Spacewatch project - http://www.lpl.arizona.edu/spacewatch/
The Catalina Sky Survey - http://www.lpl.arizona.edu/css/
DLR-Archenhold Near Earth Objects Precovery Survey (DANEOPS) - http://earn.dlr.de/daneops/
Pan-STARRS - http://pswww.ifa.hawaii.edu/pswww/

LSST - http://www.lsst.org/lsst/
Observatorio Astronomico de La Sagra - http://www.minorplanets.org/OLS/
The NEOWISE project - http://neowise.ipac.caltech.edu/

NEO Physical Properties Databases

SINEO: Spectroscopic Investigation of Near-Earth Objects - http://www.astro.unipd.it/planets/sineo.html
The LINEAR Survey Photometric Database - http://skydot.lanl.gov/linear/linear.php
Behrend catalogue of asteroid lightcurves - http://obswww.unige.ch/~behrend/page_cou.html
M4AST - Modelling for Asteroids - http://m4ast.imcce.fr/
MP3C - Minor Planet Physical Properties Catalogue - http://mp3c.oca.eu/

Scientific Organizations

Europlanet: a European Research Infrastructure on Planetary Science - http://www.europlanet-eu.org/outreach/
The Planetary Society in UK - http://www.planetary.org.uk/
The Planetary Society headquarters in USA - http://planetary.org/
The B612 Foundation http://b612foundation.org/b612/
NEOShield: an European Project to Address Impact Hazard Mitigation Issues.   http://www.lpi.usra.edu/meetings/acm2012/pdf/6120.pdf
International Asteroid Warning Network - http://www.minorplanetcenter.net/IAWN/

Space Missions:

ESA NEO Space Mission Studies - http://www.esa.int/SPECIALS/NEO/
The ESA Marco Polo NEA sample return mission - https://www.oca.eu/MarcoPolo-R/
The OSIRIS-Rex NEA sample return mission - http://science.nasa.gov/missions/osiris-rex/
The Hayabusa NEA sample return mission - http://www.isas.jaxa.jp/e/enterp/missions/hayabusa/index.shtml:
The NEAR mission to asteroid Eros - http://near.jhuapl.edu/
The WISE mission - http://wise.ssl.berkeley.edu/index.html

Other Interesting Sites

Earth's busy neighborhood - http://www.hohmanntransfer.com/
Tunguska home page, by the University of Bologna - http://www-th.bo.infn.it/tunguska
Gary W. Kronk's Cometography - http://cometography.com/
Planetary Resources: the asteroid mining company - http://www.planetaryresources.com/
Planetary and Space Science Centre - http://www.passc.net/
Planetary and Space Science Earth Impact Database - http://www.passc.net/EarthImpactDatabase/index.html

Past and forthcoming meetings
1st PDC - Planetary Defense Conference 2009, Granada (Spain) – http://www.congrex.nl/09c04/
1st Gaia Follow-Up-Network of Solar System Objects (GAIA-FUN-SSO) workshop 2010, Paris (France) - https://gaiafunsso.imcce.fr/workshop/GFSSO-Proceedings-2010.pdf
2nd PDC - Planetary Defense Conference 2011, Bucharest (Romania) - http://www.pdc2011.org/
IAU General Assembly, August 2012 Beijing (China) - http://www.iau.org/science/meetings/future/general_assemblies/812/
2nd Gaia Follow-Up-Network of Solar System Objects (GAIA-FUN-SSO) workshop, 19-21 September 2012, Paris (France) - https://gaiafunsso.imcce.fr/workshop/GFSSO-Proceedings-2012.pdf
EPSC – European Planetary Science Congress, 23 - 28 September 2012, Madrid (Spain) - http://www.epsc2012.eu/information/general_information.html
IAC – International Astronautical Congress, 1 - 5 October 2012, Naples (Italy) - http://www.iac2012.org/
3rd PDC - Planetary Defence Conference April 15-19, 2013, Flagstaff, (Arizona) USA - http://iaaweb.org/content/view/492/661/
EPSC - European Planetary Science Congress, 08 – 13 September 2013, London (UK)
http://www.epsc2013.eu/
EPSC- European Planetary Science Congress, 07 – 12 September 2014, Cascais (Portugal)
http://www.epsc2014.eu/ 
3rd Gaia Follow-Up-Network of Solar System Objects (GAIA-FUN-SSO) workshop 24-26 November 2014, Paris (France)
https://gaiafunsso.imcce.fr/workshop/GFSSO-Proceedings-2014.pdf
ACM - Asteroids Comets Meteors, June 30th – July 4th 2014, Helsinki (Finland)
http://www.helsinki.fi/acm2014/
4th PDC- Planetary Defence Conference, 13 - 17 April 2015, Frascati (Italy)
http://iaaweb.org/content/view/599/785/