Ephemeris
- IAU - Minor Planet Center
- Ephemeris of Observable Comets
- MP and Comet Ephemeris Service
- HORIZONS Ephemeris Generator
- The NEO Confirmation Page
- Comet and NEO/Distant Minor Planet Designations Assigned in the Past Year
Recent IAU Circulars
Observations and Analysis
- International Comet Quarterly
- Comet Brightness Estimates - (ICQ)
- CARA Comet Data Archive
- The Transient Sky - Comets, Asteroids, Meteors
- Seiichi Yoshida's Comet Pages
- Cometas Obs - Curvas de luz de cometas
- Cometas Astronomia (Astronomy, Astrophysical, Comets) by Jose Pablo Navarro Pina
- Comets in twilight by Juan José González
- Iberoamerican Comet Observations
Comet Images Archives
- Crni Vrh Observatory - Comet Image Archive
- BAA Comet Section - Comets Gallery
- VdS Fachgruppe Kometen - Image gallery
- Seiichi Yoshida - Latest Pictures of Comets
- The Astronomer Online Comets
- Les Cometes - Comet observations
- Gary Kronk's Cometography
- Gerald Rhemann - Comet Pages
- Michael Jager - Comet Pieces
- Damian Peach's - Views of the Solar System
- Chris Schur - Comet Archive
- Martin Mobberley's - Comet page
- BRIXIIS astronomical Observatory
Associations
- Astronomical society Orion - MBK Team
- BAA Comet Section Home Page
- Society for Interplanetary Matter
- Svensk AmatörAstronomisk Förening
- VdS Fachgruppe Kometen
- Nederlandske Kometen Vereinigung
- U.A.I. Sezione Comete
- ALPO Comet Section
- Cometary Section of the Iberoamerican Astronomical League
- Brazilian Comet Section (Rede de Astronomia Observacional)
- Royal Astronomical Society of New Zealand
- Astronomical Association of Belgium - Comet section
