Isaac Scientific Publishing

Advances in Astrophysics

Size and Albedo of the Object of Interstellar Origin A/2017U1

Download PDF (339.2 KB) PP. 47 - 49 Pub. Date: May 8, 2018

DOI: 10.22606/adap.2018.32001


  • N.Chandra Wickramasinghe*
    Buckingham Centre for Astrobiology, University of Buckingham, UK
  • Janaki T. Wickramasinghe
    Buckingham Centre for Astrobiology, University of Buckingham, UK
  • Daryl H. Wallis
    Institute for the Study of Panspermia and Astrobiology, Gifu, Japan


The interstellar object A/2017U1 has been reported to possess a highly elongated shape with a characteristic average radius of 102m. We argue that the evolution of an organic-rich cometary surface in interstellar space could lead to the formation of an aerogel-like surface with an albedo of 0.0005 leading to a more realistic characteristic dimension of ~1000m.


Comets, albedo, size


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