{"id":319,"date":"2007-02-22T21:11:30","date_gmt":"2007-02-22T21:11:30","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2007\/02\/22\/struve_1669\/"},"modified":"2007-02-22T21:11:30","modified_gmt":"2007-02-22T21:11:30","slug":"struve_1669","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2007\/02\/22\/struve_1669\/","title":{"rendered":"Struve 1669"},"content":{"rendered":"

<\/p>\n

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

About a degree and a half south of the Sombrero Galaxy, M104, you’ll find the multiple star, Struve 1669. The main attraction here is a pair of 6th magnitude F class stars. When observing them, don’t forget to take in a third, tenth-magnitude star 1 arc minute to the southwest. The two brighter stars appeared to be separated by about 4 arc seconds, and resting at a PA of 315 degrees. Values in the Washington Double Star Catalog list 5.4″ from 1828 and 312 degrees from 1991. Color was tough to nail down, and I eventually settled for pale yellow for the northwest star and white for the southeast companion. Give it a look the next time you’re dancing around that nearby galactic hat and see what colors you perceive.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nStruve 1669<\/b><\/td>\n<\/tr>\n
Classification<\/b><\/td>\nMultiple Star<\/td>\n<\/tr>\n
Position (J2000)<\/b><\/td>\nCorvus [RA: 12:41:15.8 \/ Dec: -13:00:49]*<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\nAB: 312\u00c2\u00b0 (1991); AC: 235\u00c2\u00b0 (1900)<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\nAB: 5.4″ (1828); AC: 59″ (1900)<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\nA: 6.0; B: 6.1; C: 10.5<\/td>\n<\/tr>\n
Spectral Types*<\/b><\/td>\nF5V; F5V; –<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nJAN 18, 2007 – 06:40 AM MST (JAN 18, 2007 – 13:40 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nFlagstaff, AZ – Home<\/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>\nClear, calm, 11\u00c2\u00b0 F<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n4\/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)<\/td>\n<\/tr>\n<\/table>\n

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

Struve 1669<\/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":[56,57,100,15],"tags":[],"class_list":["post-319","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-corvus","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":14,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/double_star_ske\/","url_meta":{"origin":319,"position":0},"title":"Double Star Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Double Star Sketches","rel":"","context":"In "General"","block_context":{"text":"General","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":420,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/07\/20\/struve_2306\/","url_meta":{"origin":319,"position":1},"title":"Struve 2306","author":"jperez1690","date":"July 20, 2008","format":false,"excerpt":"Struve 2306","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":510,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/12\/05\/xi_scorpius_str\/","url_meta":{"origin":319,"position":2},"title":"Xi Scorpii (Struve 1998) and Struve 1999","author":"jperez1690","date":"December 5, 2009","format":false,"excerpt":"Xi Scorpii","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":508,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/12\/02\/struve_2194\/","url_meta":{"origin":319,"position":3},"title":"Struve 2194","author":"jperez1690","date":"December 2, 2009","format":false,"excerpt":"Struve 2194","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":497,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/10\/09\/epsilon_monocer\/","url_meta":{"origin":319,"position":4},"title":"Epsilon Monocerotis (Struve 900)","author":"jperez1690","date":"October 9, 2009","format":false,"excerpt":"Epsilon Monocerotis","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":519,"url":"https:\/\/perezmedia.net\/beltofvenus\/2010\/01\/10\/ngc_2169_and_st\/","url_meta":{"origin":319,"position":5},"title":"NGC 2169 and Struve 848","author":"jperez1690","date":"January 10, 2010","format":false,"excerpt":"NGC 2169","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"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\/319","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=319"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/319\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}