Sky Notes: 2017 August & September
Brian takes a look at the sky for August and September
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Archives
A 45th supernova for Ron Arbour
Congratulations to Ron Arbour on the discovery of his 45th supernova, SN 2017ein, in NGC 3938 on 2017 May 25
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Covering the June 3 occultation by 2014MU69 from Bloemfontein, South Africa
On 2017 June 3, the Kuiper Belt Object (KBO) 2014MU69 [now numbered (486958) 2014 MU69] was expected to occult a
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Hunting down the most remote and obscure globular clusters
Globular star clusters are without doubt among the most spectacular objects to be found in the night sky. I’m sure
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Determining the magnitudes & spectral types of the components of the binary Mira star X Ophiuchi
Analysis of new photometry and spectroscopy of the binary Mira-type variable star X Ophiuchi between 2016 May and 2016 Dec indicates that the V magnitude of the constant star is 9.0 and its spectral type K1III. The spectral type of the Mira changed from M6III at maximum to M7III as it faded and passed through minimum. The Mira’s V magnitude varied between 6.47 at maximum and 9.83 at minimum, a range of 3.36 mags.
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