{"id":528,"date":"2010-02-28T16:08:54","date_gmt":"2010-02-28T16:08:54","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2010\/02\/28\/90_leonis_struv\/"},"modified":"2010-02-28T16:08:54","modified_gmt":"2010-02-28T16:08:54","slug":"90_leonis_struv","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2010\/02\/28\/90_leonis_struv\/","title":{"rendered":"90 Leonis (Struve 1552)"},"content":{"rendered":"
\"Sketch<\/a><\/p>\n

Sketch of 90 Leonis (Struve 1552)<\/p>\n

Click image to view larger version.<\/i><\/p>\n<\/div>\n

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

The trio of 90 Leonis appeared sky blue, cream, and dull orange. Sissy Haas sees yellow, yellow, gray and Smyth saw silvery-white, purplish, pale-red. <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\n90 Leonis (STF 1552 \/ ADS 8220)<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nMultiple Star<\/td>\n<\/tr>\n
Position (J2000)*<\/b><\/td>\nSextans [RA: 11 34 42.5 \/ Dec: +16 47 48.9]<\/td>\n<\/tr>\n
Position Angle<\/b><\/td>\nAB: 214° [My Measurement 2009.9]
AB: 208° [WDS 2007]*
AC: 234°
AC: 235° [WDS 2007]*<\/td>\n<\/tr>\n
Separation<\/b><\/td>\nAB: 4″ [My Measurement 2009.9]
AB: 3.5″ [WDS 2007]*
AC: 63″ [My Measurement 2009.9]
AC: 63.2″ [WDS 2007]*<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\nA: 6.3; B: 7.3 C: 9.8<\/td>\n<\/tr>\n
Spectral Types*<\/b><\/td>\nA: B4V; B: B9V; C: F5<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nNOV 26, 2009 – 4:50 AM (NOV 26, 2009 – 11:50 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nFlagstaff, AZ – Home<\/td>\n<\/tr>\n
Instrument<\/b><\/td>\nOrion SkyQuest XT8 Dobsonian (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n
Eyepieces\/Mag.<\/b><\/td>\nPentax XW10 + 2X Barlow (240X)
Meade Astrometric EP + 2X Barlow (200X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nClear, cold<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n3\/10 Pickering<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nMag 6.0 NELM<\/td>\n<\/tr>\n
*References<\/b><\/td>\nThe Washington Visual Double Star Catalog (Mason+ 2001-2009); Catalogue of Stellar Spectral Classifications (Skiff, 2009); SIMBAD; Double Stars for Small Telescopes<\/i> – Sissy Haas<\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

90 Leonis<\/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":[56,57,53],"tags":[],"class_list":["post-528","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-leo"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":572,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/28\/tau_and_83_leon\/","url_meta":{"origin":528,"position":0},"title":"Tau and 83 Leonis (Struve-A 19 \/ Struve )","author":"jperez1690","date":"July 28, 2011","format":false,"excerpt":"Tau LEO \/ 83 LEO","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":579,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/30\/iota_leonis_str\/","url_meta":{"origin":528,"position":1},"title":"Iota Leonis (Struve 1536)","author":"jperez1690","date":"July 30, 2011","format":false,"excerpt":"Iota LEO","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":573,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/28\/88_leonis_struv\/","url_meta":{"origin":528,"position":2},"title":"88 Leonis (Struve 1547)","author":"jperez1690","date":"July 28, 2011","format":false,"excerpt":"88 LEO","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":571,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/27\/tau_leonis_stru\/","url_meta":{"origin":528,"position":3},"title":"Tau Leonis (Struve-A 19)","author":"jperez1690","date":"July 27, 2011","format":false,"excerpt":"Tau LEO","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":570,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/27\/83_leonis_struv\/","url_meta":{"origin":528,"position":4},"title":"83 Leonis (Struve 1540)","author":"jperez1690","date":"July 27, 2011","format":false,"excerpt":"83 LEO","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":535,"url":"https:\/\/perezmedia.net\/beltofvenus\/2010\/05\/09\/49_leonis_struv\/","url_meta":{"origin":528,"position":5},"title":"49 Leonis (Struve 1450 \/ TX LEO)","author":"jperez1690","date":"May 9, 2010","format":false,"excerpt":"49 LEO","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\/528","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=528"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/528\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}