{"id":497,"date":"2009-10-09T23:26:23","date_gmt":"2009-10-09T23:26:23","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2009\/10\/09\/epsilon_monocer\/"},"modified":"2009-10-09T23:26:23","modified_gmt":"2009-10-09T23:26:23","slug":"epsilon_monocer","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2009\/10\/09\/epsilon_monocer\/","title":{"rendered":"Epsilon Monocerotis (Struve 900)"},"content":{"rendered":"<div class=\"imageblock\"><a href=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2008\/img2008113003_EpsilonMONlg.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2008\/img2008113003_EpsilonMON.jpg\" alt=\"Sketch of Epsilon Monocerotis (Struve 900\/STF 900)\"><\/a><\/p>\n<p class=\"caption\">Sketch of Epsilon Monocerotis (Struve 900)<\/p>\n<p><i>Click image to view larger version.<\/i><\/p>\n<\/div>\n<p><b>Observation Notes:<\/b><\/p>\n<p>Epsilon Monocerotis resides in a populous star field. Color was subtle, and it seemed that the A8 primary was pale yellow while the F5 secondary appeared steel blue-gray. Other observers see the colors as follows:<\/p>\n<ul>\n<li>Smythe: <a href=\"http:\/\/stars.astro.illinois.edu\/sow\/epsmon.html\" target=\"_blank\" rel=\"noopener\">Golden Yellow \/ Lilac<\/a><\/li>\n<li>Richard Jepeal: <a href=\"http:\/\/www.cloudynights.com\/ubbthreads\/showthreaded.php\/Cat\/0\/Number\/3004042\/page\/0\/view\/collapsed\/sb\/5\/o\/all\/vc\/1\" target=\"_blank\" rel=\"noopener\">Medium Yellow \/ Grayish Purple<\/a><\/li>\n<li>Jeff Burton: <a href=\"http:\/\/x.astrogeek.org\/observations\/log.php?o=522\" target=\"_blank\" rel=\"noopener\">White \/ Orange<\/a><\/li>\n<li>M. Bracewell: <a href=\"http:\/\/wgg.com\/scope\/dbl.html#030\" target=\"_blank\" rel=\"noopener\">Blue \/ Gray<\/a><\/li>\n<li>Ian at Cloudy Nights: <a href=\"http:\/\/www.cloudynights.com\/ubbarchive\/showflat.php\/Cat\/1,2,3,4,5,6,7,8,9,10\/Number\/296790\/page\/37\/view\/collapsed\/sb\/8\/o\/all\/fpart\/1\" target=\"_blank\" rel=\"noopener\">Pale Yellow \/ Slate<\/a><\/li>\n<\/ul>\n<p>There is a 3rd, 12th-magnitude star 94 arc seconds away at a PA of 254 degrees that is listed as the C component of Struve 900. This seems to match up with a faint star I plotted to the west of the brighter pair. <\/p>\n<table class=\"objectdata\">\n<tr>\n<td><b>Subject<\/b><\/td>\n<td class=\"subject\">Epsilon Monocerotis (STF 900)<\/td>\n<\/tr>\n<tr>\n<td><b>Classification<\/b><\/td>\n<td>Multiple Star<\/td>\n<\/tr>\n<tr>\n<td><b>Position (J2000)*<\/b><\/td>\n<td>Monoceros [RA: 06:23:46.1 \/ Dec: +04:35:34.2]<\/td>\n<\/tr>\n<tr>\n<td><b>Position Angle<\/b><\/td>\n<td>AB: 29&deg; [My Measurement 2008.9]<br \/>AB: 28.1&deg; [Wycoff 1999.96]*<br \/>AC: 254&deg; [WDS 1911]*<\/td>\n<\/tr>\n<tr>\n<td><b>Separation<\/b><\/td>\n<td>AB: 10.3&#8243; [My Measurement 2008.9]<br \/>AB: 12.4&#8243; [Wycoff 1999.96]*<br \/>AC: 93.6&#8243; [WDS 1911]*<\/td>\n<\/tr>\n<tr>\n<td><b>Magnitudes*<\/b><\/td>\n<td>A: 4.4; B: 6.7; C: 12.7<\/td>\n<\/tr>\n<tr>\n<td><b>Spectral Types*<\/b><\/td>\n<td>A: A8V(n); B: F5V<\/td>\n<\/tr>\n<tr>\n<td><b>Date\/Time<\/b><\/td>\n<td>DEC 1, 2008 &#8211; 12:15 AM (DEC 1, 2008 &#8211; 07:15 UT)<\/td>\n<\/tr>\n<tr>\n<td><b>Observing Loc.<\/b><\/td>\n<td>Flagstaff, AZ &#8211; Home<\/td>\n<\/tr>\n<tr>\n<td><b>Instrument<\/b><\/td>\n<td>Orion SkyQuest XT8 Dobsonian (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n<tr>\n<td><b>Eyepieces\/Mag.<\/b><\/td>\n<td>Pentax XW10 + 2X Barlow (240X)<br \/>Meade Astrometric EP + 2X Barlow (200X)<\/td>\n<\/tr>\n<tr>\n<td><b>Conditions<\/b><\/td>\n<td>Clear, cool, breezy<\/td>\n<\/tr>\n<tr>\n<td><b>Seeing<\/b><\/td>\n<td>5\/10 Pickering<\/td>\n<\/tr>\n<tr>\n<td><b>Transparency<\/b><\/td>\n<td>Mag 6.0 NELM<\/td>\n<\/tr>\n<tr>\n<td><b>*References<\/b><\/td>\n<td>The Washington Visual Double Star Catalog (Mason+ 2001-2009); Double stars in astrometric catalogs (Wycoff+, 2006); Catalogue of Stellar Spectral Classifications (Skiff, 2009); SIMBAD<\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Epsilon Monocerotis<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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":""},"categories":[16,56,57,88,15],"tags":[],"class_list":["post-497","post","type-post","status-publish","format-standard","hentry","category-deep-sky","category-double-star","category-sg-double-star","category-sgc-monoceros","category-sketch-gallery"],"jetpack-related-posts":[{"id":505,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/11\/14\/beta_monoceroti\/","url_meta":{"origin":497,"position":0},"title":"Beta Monocerotis (Struve 919)","author":"jperez1690","date":"November 14, 2009","format":false,"excerpt":"Beta Monocerotis","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":547,"url":"https:\/\/perezmedia.net\/beltofvenus\/2010\/10\/03\/destinations_al\/","url_meta":{"origin":497,"position":1},"title":"Destinations Along the Winter Milky Way","author":"jperez1690","date":"October 3, 2010","format":false,"excerpt":"Photograph of Winter Milky Way over Sunset Crater with sketches of deep sky objects in the area. 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