Giovanni Sostero (18 March 1964 – 6 December 2012) was an Italian amateur astronomer. He was one of the leading members of the Associazione Friulana di Astronomia e Meteorologia (Friuli, Italy). He was an honorary member of the Astronomical Observatory of Visnjan (Croatia), too.
Sostero was very active as a public out-reacher and has published some scientific works in professional astronomical journals. He had over 1880 NASA ADS citations for his work. His main research fields were the minor bodies of the Solar System (asteroids and comets) and variable stars (symbiotic stars and supernovae). In particular, he discovered several supernovae: 2009jp, 2008ae, 2008F, 2007cl, 2006br, 2006bm, 2006H, 2006B, 2005ly, 2005kz, 2005kc. In 2000 he co-discovered a nova in the galaxy M31.
The asteroid 9878 Sostero (1994 FQ) was named after him.
The "Giovanni Sostero Award" was created in 2013 and supported thereafter by Elettra - Sincrotrone Trieste to honor Sostero, formerly in charge of the soft x-ray metrology laboratory at the facility.
- Atkinson, Nancy (December 10, 2012). "Astronomer Giovanni Sostero, 1964-2012". Universe Today. Retrieved 2012-12-10.
- "List of Supernovae". IAU: Central Bureau for Astronomical Telegrams. Retrieved 2011-07-03.
- "IAUC 7516: SNe; N IN M31". IAU: Central Bureau for Astronomical Telegrams. Retrieved 2011-07-03.
- Howes, Nick (2012-12-07). "Giovanni Sostero". comets-ml · Comets Mailing List. Retrieved 2012-12-07.
- "Giovanni Sostero Award at MEADOW 2013".
- "Giovanni Sostero Award at IWXM 2015".
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