{"id":329,"date":"2007-05-17T22:47:47","date_gmt":"2007-05-17T22:47:47","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2007\/05\/17\/40_41_draconis\/"},"modified":"2007-05-17T22:47:47","modified_gmt":"2007-05-17T22:47:47","slug":"40_41_draconis","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2007\/05\/17\/40_41_draconis\/","title":{"rendered":"40, 41 Draconis (Struve 2308)"},"content":{"rendered":"

<\/p>\n

Observation Notes:<\/b><\/p>\n

During a trip to Oklahoma, I brought the telescope along in hopes of doing some observing. But with clouds and constant wind, I got very little done. This was the one observation I was able to sketch and present. The A and B stars of this multiple were golden yellow in color and similar in brightness. I estimated PA at 228° with a 30 arcsecond separation. The actual AB values are 236° and 20.6 arcseconds. The C component didn’t display any obvious color and appeared to rest at 140° with a separation of about 200 arcseconds. The actual AC value is 128° and 221.6 arcseconds.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\n40, 41 Draconis (STF 2308)<\/b><\/td>\n<\/tr>\n
Classification<\/b><\/td>\nMultiple Star<\/td>\n<\/tr>\n
Position (J2000)<\/b><\/td>\nDraco[RA: 18:00:09.3 \/ Dec: +80:00:15]*<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\nAB: 236° (1832) \/ AC 128° (1932)<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\nAB: 20.6″ (1832) \/ AC 221.6″ (1932)<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\nA: 5.68 \/ B: 6.04<\/td>\n<\/tr>\n
Spectral Types*<\/b><\/td>\nK2V \/ K2V \/ G5<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nMAR 19, 2007 – 12:05 AM MST (MAR 19, 2007 – 07:05 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nElk City, OK (Flying W Guest Ranch)<\/td>\n<\/tr>\n
Instrument<\/b><\/td>\nOrion SVP 6LT Reflector (150 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n
Eyepieces\/Mag.<\/b><\/td>\n10 mm + 2X Barlow (240X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nPartly Cloudy, Breezy<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n3\/10 Pickering<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nNELM Mag ~5.0<\/td>\n<\/tr>\n
References<\/b><\/td>\nThe Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996); The Tycho-2 Spectral Type Catalog (Wright+, 2003)<\/td>\n<\/tr>\n<\/table>\n

*Based on published data.<\/p>\n","protected":false},"excerpt":{"rendered":"

40, 41 Draconis<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[56,57,105,15],"tags":[],"class_list":["post-329","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-draco","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":336,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/07\/12\/mu_bootis\/","url_meta":{"origin":329,"position":0},"title":"Mu Bootis (Struve 28 \/ 1938)","author":"jperez1690","date":"July 12, 2007","format":false,"excerpt":"Mu Bootis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":325,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/04\/25\/tau1_hydrae_hj\/","url_meta":{"origin":329,"position":1},"title":"Tau-1 Hydrae (HJ 1167)","author":"jperez1690","date":"April 25, 2007","format":false,"excerpt":"Tau1 Hydrae","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":307,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/12\/03\/32_camelopardal\/","url_meta":{"origin":329,"position":2},"title":"32 Camelopardalis (Struve 1694)","author":"jperez1690","date":"December 3, 2006","format":false,"excerpt":"32 Camelopardalis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":338,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/07\/14\/sigma_coronae_b\/","url_meta":{"origin":329,"position":3},"title":"Sigma Coronae Borealis (Struve 2032)","author":"jperez1690","date":"July 14, 2007","format":false,"excerpt":"Sigma Coronae Borealis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":337,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/07\/13\/zeta_coronae_bo\/","url_meta":{"origin":329,"position":4},"title":"Zeta Coronae Borealis (Struve 1965)","author":"jperez1690","date":"July 13, 2007","format":false,"excerpt":"Zeta Coronae Borealis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":339,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/07\/14\/4_centauri_hers\/","url_meta":{"origin":329,"position":5},"title":"4 Centauri (Herschel 51)","author":"jperez1690","date":"July 14, 2007","format":false,"excerpt":"04 Centauri","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/comments?post=329"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/329\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}