{"id":561,"date":"2007-10-25T02:28:40","date_gmt":"2007-10-25T02:28:40","guid":{"rendered":"http:\/\/www.bartbusschots.ie\/blog\/?p=561"},"modified":"2014-08-07T13:05:31","modified_gmt":"2014-08-07T13:05:31","slug":"surprise-outburst-of-comet-holmes-observed","status":"publish","type":"post","link":"https:\/\/www.bartbusschots.ie\/s\/2007\/10\/25\/surprise-outburst-of-comet-holmes-observed\/","title":{"rendered":"Surprise Outburst of Comet Holmes Observed"},"content":{"rendered":"<p>It&#8217;s very rare to get to see a comet which is so bright that you can easily see it from the middle of a housing estate through light haze with a near full Moon with just your eyes. No telescope, no binoculars, nothing! But that&#8217;s what I&#8217;ve just done. The Periodic comet 17\/P Holmes has just surprised the heck out of Astronomers by brighting from Magnitude 17 (you need a professional grade telescope to see things that faint) to Magnitude 3 (easily visible with the naked eye) literally over-night. Obviously something very spectacular just happened on the comet.<\/p>\n<p>Thanks to an email with coordinates form Terry Mosley I knew Holmes could be found near delta Persei at around midnight. When I got outside conditions were very poor and not helped by the street lights all around me. As I mentioned there was a near full Moon high to the south and a think layer of haze across the whole sky being lit up by the Moon. Needless to say my expectations weren&#8217;t high. However, Holmes was so bright that it distorted the shape of Perseus to the extent that I had trouble finding the constellation! My brain just kept saying &#8220;no, that&#8217;s not Perseus, Perseus doesn&#8217;t have that nice little triangle of stars in it&#8221;. You guessed it, one of those three stars was not a star at all but the comet. To me Holmes looked to be about the same brightness as Delta Persei so that would put it at around the Magnitude 3. I&#8217;ve never seen a comet like this before. It looks just like a star, even in binoculars. No Coma, no tail, nothing, just a point of light. For all the world it looks like an extra star has appeared out of nowhere in Perseus. I&#8217;ve attached a scan of my record of the observation below.<\/p>\n<p style=\"text-align:center\"><img src='http:\/\/www.bartbusschots.ie\/blog\/wp-content\/uploads\/2007\/10\/17pholmes-071025.jpg' alt='Comet 17\/P Holmes - 25-10-2007 @ 00:20' style=\"border:1px solid black;float:none\" \/><\/p>\n<p>If you&#8217;re interested in observing the comet yourself the guys in Astronomy Ireland have been kind enough to put a finder chart up on their website. You can find it here: <a herf=\"http:\/\/www.astronomy.ie\/holmes2.gif\" target=\"_blank\">www.astronomy.ie\/holmes2.gif<\/a><\/p>\n<p>[tags]Comet, 17\/P Holmes[\/tags]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s very rare to get to see a comet which is so bright that you can easily see it from the middle of a housing estate through light haze with a near full Moon with just your eyes. No telescope, no binoculars, nothing! But that&#8217;s what I&#8217;ve just done. The Periodic comet 17\/P Holmes has [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2],"tags":[36,502,501],"series":[],"class_list":["post-561","post","type-post","status-publish","format-standard","hentry","category-science-astronomy","tag-astronomy","tag-comet","tag-observation-log"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p7t9xK-93","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/posts\/561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/comments?post=561"}],"version-history":[{"count":1,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/posts\/561\/revisions"}],"predecessor-version":[{"id":1409,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/posts\/561\/revisions\/1409"}],"wp:attachment":[{"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/media?parent=561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/categories?post=561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/tags?post=561"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.bartbusschots.ie\/s\/wp-json\/wp\/v2\/series?post=561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}