Orbit of Comet C/2023 A3 (Tsuchinshan-ATLAS)
  • Intro by Brock Johnston
  • New members
    • TJ – from Switzerland, pilot in the north, and lifelong interest in astronomy
    • Megan – astrophotography
    • Ada Chen – aurora, comet
  • A Beginner’s Mini Guide to the Solar Wind – Natasha van Bentum
    • NASA solar wind video
    • Sun’s Corona
    • Discovery of Solar Wind
    • International Year of Light – May 16th
    • In Our Time – BBC episode
  • What if the Earth orbited Rigel? – discussion lead by Randy Enkin
    • Rigel is a blue supergiant, 17 solar masses in size and much hotter than our Sun
    • Habitable zone for Rigel would be 150-300 AUs – Pluto is 70 AUs
    • Orbital speed of Earth would be very different
    • The equations for orbit calcs are here
  • Comet C/2023 A3 Tsuchinshan-ATLAS – RASC Victoria members observations and photos
    • David Lee – observed on Oct 12th and onward
    • Randy Enkin – King George Terrace – binocular view
    • Comet stacking software – Pixinsight and Siril
    • Ada Chen – comet photo taken with iPhone
    • COBS graph of observations and magnitude – Randy Enkin
    • Reg Dunkley – upcoming observing sessions at Victoria Centre Observatory
    • Discussion of the anti tail
  • Space News – Chris Gainor
  • Events

Video transcript of meeting

Astronomy Cafe – Oct 21, 2024
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