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Ursa Astronomical Association
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Ursa Astronomical Association

Telescopic comet Iwamoto - 5.3.2019 at 21.45 Ulvila Observation number 81667

Visibility II / V

Juha Ojanperä, Porin Karhunvartijat

I finally managed to make a decent observation of the Iwamoto comet. Only the comet's coma was visible and under these conditions it too appeared with difficulty and very dim. The coma only brightens slightly towards the center. No central clearing or visual tail is observed. Coma diameter about 5 ', degree of compaction 2.

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Additional information
  • Observation target
    • Comet
  • Name of the observation target
    • C/2018 Y1 (Iwamoto)
    • Heikosti näkyvä
  • Coma diameter
  • 5 kaariminuuttia
  • Weather
    • Selkää, tyytä, ei Kuuta, vähän lunta maassa, SQM: 20.15
  • Visibility of the comet
    • Telescopic comet
Technical information

Telescope: C280 / 2750 mm, magnification: 114x, visual observation, drawing on cardboard, scanned and slightly retouched with Paint Shop Pro

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