{"id":4107,"date":"2023-08-21T19:00:07","date_gmt":"2023-08-21T17:00:07","guid":{"rendered":"https:\/\/robinfo.oma.be\/?p=4107"},"modified":"2025-02-24T16:47:33","modified_gmt":"2025-02-24T15:47:33","slug":"octobre-2023-dans-le-ciel-d","status":"publish","type":"post","link":"https:\/\/robinfo.oma.be\/fr\/octobre-2023-dans-le-ciel-d\/","title":{"rendered":"Octobre 2023 (Dans le ciel d\u2019)"},"content":{"rendered":"

AVIS IMPORTANT : Pour obtenir l\u2019heure officielle, ajouter DEUX heures aux heures indiqu\u00e9es ci-dessous (en Temps Universel UT pour Uccle)<\/i><\/span><\/span><\/p>\n

Ph\u00e9nom\u00e8nes c\u00e9lestes int\u00e9ressants<\/h3>\n

2 <\/b><\/span><\/span><\/span>La Lune en conjonction \u00e0 3\u00b0 N de Jupiter (-2,8) \u00e0 3 h<\/span><\/span><\/span><\/p>\n

5<\/b><\/span><\/span><\/span> La Lune en plus grande d\u00e9clinaison (+28\u00b019\u2019) pour l\u2019ann\u00e9e en cours \u00e0 21 h 10 m<\/span><\/span><\/span><\/p>\n

Passage de l\u2019ombre du satellite J III (Ganym\u00e8de) devant le disque de Jupiter (-2,8) de 21 h 55 m \u00e0 23 h 41 m<\/span><\/span><\/span><\/p>\n

6 Dernier Quartier <\/b><\/span><\/span><\/span>de Lune \u00e0 13 h 48 m<\/span><\/span><\/span><\/p>\n

Les satellites galil\u00e9ens J I (Io) et J II (Europa) en conjonction peu apr\u00e8s 21 h 30 m (<\/span><\/span><\/span>Excellente occasion pour suivre les changements continus de position des satellites de Jupiter pendant un petit moment<\/i><\/span><\/span><\/span>)<\/span><\/span><\/span><\/p>\n

8<\/b><\/span><\/span><\/span> Occultation <\/span><\/span><\/span>rasante<\/i><\/span><\/span><\/span> de l\u2019\u00e9toile SAO 80100 au bord sombre de la Lune \u00e0 proximit\u00e9 imm\u00e9diate d\u2019une ligne passant par Oignies-en-Thi\u00e9rache, Marche-en-Famenne et Kalterherberg (D) vers 1 h 40 m<\/span><\/span><\/span><\/p>\n

10 <\/b><\/span><\/span><\/span>La Lune \u00e0 l\u2019apog\u00e9e (<\/span><\/span><\/span>\u00e0 405\u00a0426 km de la Terre \u2013 Diam\u00e8tre apparent\u00a0: 29\u2019 28\u201d<\/span><\/span><\/span>) \u00e0 4 h<\/span><\/span><\/span><\/p>\n

V\u00e9nus (-4,5) \u00e0 2\u00b0 S de l\u2019\u00e9toile R\u00e9gulus [Alpha Leo (+1,3)] \u00e0 5 h<\/span><\/span><\/span><\/p>\n

La Lune \u00e0 6\u00b0 au nord de V\u00e9nus (-4,5) \u00e0 10 h<\/span><\/span><\/span> <\/b><\/p>\n

11<\/b><\/span><\/span><\/span> Un mince croissant de Lune, V\u00e9nus (-4,5) et R\u00e9gulus [Alpha Leo (+1,3)] en beau triangle rectangle un peu en-dessous de l\u2019\u00e9toile \u03b4Gem (+3,5) \u00e0 1\u00b0 SW environ de la com\u00e8te 103P\/Hartley (+7) \u00e0 4 h<\/span><\/span><\/span><\/p>\n

12<\/b><\/span><\/span><\/span> La com\u00e8te 103P\/Hartley en passage au p\u00e9rih\u00e9lie dans la constellation des G\u00e9meaux \u00e0 1,064 unit\u00e9 astronomique (ua) soit 159,2 millions de kilom\u00e8tres du Soleil<\/span><\/span><\/span><\/p>\n

14 <\/b><\/span><\/span><\/span>Eclipse annulaire de Soleil, invisible en Belgique et en Europe<\/i><\/span><\/span><\/span>, de 15 h 04 m \u00e0 20 h 55 m <\/span><\/span><\/span><\/p>\n

Nouvelle Lune<\/b><\/span><\/span><\/span> \u00e0 17 h 55 m<\/span><\/span><\/span><\/p>\n

17 <\/b><\/span><\/span><\/span>Le plan\u00e9to\u00efde 1998 HH49 (+13) de type Apollo en passage rapproch\u00e9 de la Terre, \u00e0 0,007861 ua soit 1171 milliers de kilom\u00e8tres \u2013 trois fois la distance Terre-Lune \u2013 \u00e0 une vitesse relative de l\u2019ordre de 15 km\/s \u00e0 0 h<\/span><\/span><\/span><\/p>\n

18 <\/b><\/span><\/span><\/span>La Lune en occultation \u00e0 1\u00b0N de l\u2019\u00e9toile Antar\u00e8s \u00e0 13 h (<\/span><\/span><\/span>\u00e0 une dizaine de degr\u00e9s \u00e0 peine au-dessus de l\u2019horizon<\/i><\/span><\/span><\/span>)<\/span><\/span><\/span><\/p>\n

20 <\/b><\/span><\/span><\/span>Mercure en conjonction sup\u00e9rieure avec le Soleil \u00e0 6 h <\/span><\/span><\/span><\/p>\n

La Lune en plus grande d\u00e9clinaison (-28\u00b0 19\u2019 28\u201d) \u00e0 9 h 43 m, plus n\u00e9gative valeur en 2023<\/span><\/span><\/span><\/p>\n

22 Premier Quartier<\/b><\/span><\/span><\/span> de Lune \u00e0 3 h 29 m<\/span><\/span><\/span><\/p>\n

Occultation <\/span><\/span><\/span>rasante<\/i><\/span><\/span><\/span> de l\u2019\u00e9toile SAO 189\u00a0657 au bord sombre de la Lune \u00e0 proximit\u00e9 imm\u00e9diate d\u2019une ligne passant par Mons, Bruxelles et Turnhout vers 19 h 45 m<\/span><\/span><\/span><\/p>\n

23<\/b><\/span><\/span><\/span> Le <\/span><\/span><\/span>Soleil<\/b><\/span><\/span><\/span> entre dans le <\/span><\/span><\/span>signe<\/i><\/span><\/span><\/span> du Scorpion \u00e0 16 h 21 m alors qu\u2019il passera de la <\/span><\/span><\/span>constellation <\/i><\/span><\/span><\/span>de la Vierge dans laquelle il se trouve depuis le 17 septembre dans la <\/span><\/span><\/span>constellation<\/i><\/span><\/span><\/span> de la Balance le 31 octobre<\/span><\/span><\/span><\/p>\n

Festival de satellites de Jupiter (-2,9)\u00a0: de 18 h 36 m, d\u00e9but d\u2019un passage d\u2019ombre de J I (Io) sur la plan\u00e8te, \u00e0 22 h 16 m, r\u00e9apparition en fin d\u2019occultation de J III (Ganym\u00e8de), <\/span><\/span><\/span>six<\/b><\/span><\/span><\/span> instants privil\u00e9gi\u00e9s relatifs \u00e0 ces deux satellites\u00a0!<\/span><\/span><\/span><\/p>\n

V\u00e9nus (-4,4) en plus grande \u00e9longation occidentale (46\u00b025\u2019) \u00e0 23 h<\/span><\/span><\/span><\/p>\n

24<\/b><\/span><\/span><\/span> La Lune \u00e0 6\u00b0 E de Saturne (+0,7) \u00e0 18 h 30 m<\/span><\/span><\/span><\/p>\n

26 <\/b><\/span><\/span><\/span>La Lune au p\u00e9rig\u00e9e (<\/span><\/span><\/span>\u00e0 364\u00a0873 km de la Terre \u2013 Diam\u00e8tre apparent\u00a0: 32\u2019 44\u201d<\/span><\/span><\/span>) \u00e0 3 h<\/span><\/span><\/span><\/p>\n

27 <\/b><\/span><\/span><\/span>La com\u00e8te 103P\/Hartley (+7,5) \u00e0 12\u2019 NE de l\u2019\u00e9toile \u03b2Cnc (+3,5) dans la pince occidentale du \u00ab\u00a0Crabe\u00a0\u00bb<\/span><\/span><\/span><\/p>\n

28<\/b><\/span><\/span><\/span> Eclipse partielle de Lune<\/i><\/span><\/span><\/span>, visible en Belgique, de 17 h 59 m \u00e0 22 h 29 m et Jupiter (-2,9) \u00e0 6\u00b0 \u00e0 l\u2019E de la Lune autour du maximum de l\u2019\u00e9clipse [<\/span><\/span><\/span>Donn\u00e9es utiles pour Uccle<\/u><\/span><\/span><\/span>\u00a0: Grandeur de l\u2019\u00e9clipse\u00a0: 0,128 \u2013 Entr\u00e9e dans la p\u00e9nombre\u00a0: 17 h 59,9 m\/Hauteur\u00a0: +16) \u2013 Entr\u00e9e dans l\u2019ombre\u00a0: 19 h 34,4 m\/+30\u00b0 – Maximum de l\u2019\u00e9clipse\u00a0: 20 h 14,0 m\/+36\u00b0 – Sortie de l\u2019ombre\u00a0: 20 h 53,6 m\/+42\u00b0 – Sortie de la p\u00e9nombre\u00a0: 22 h 28,3 m\/+51\u00b0]<\/span><\/span><\/span><\/p>\n

29<\/b><\/span><\/span><\/span> La Lune \u00e0 3\u00b0 N de Jupiter (-2,9) \u00e0 7 h\u00a0? (Coucher de Lune \u00e0 7 h 13 m et coucher de Jupiter \u00e0 6 h 57 m\u00a0!) <\/span><\/span><\/span><\/p>\n

30<\/b><\/span><\/span><\/span> R\u00e9apparition au bord sombre de la Lune de l\u2019\u00e9toile 57 \u03b4Ari (Botein) (+4,3) \u00e0 0 h 28,3 m (h = 59\u00b0)<\/span><\/span><\/span><\/p>\n

Uranus (+5,6) en conjonction \u00e0 2,5\u00b0 au sud de la Lune \u00e0 2 h 30 m<\/span><\/span><\/span><\/p>\n

Visibilit\u00e9 des plan\u00e8tes<\/h3>\n

Visibles \u00e0 l\u2019\u0153il nu\u00a0:<\/b><\/span><\/span><\/span> V\u00e9nus, Jupiter, Saturne<\/span><\/span><\/span><\/p>\n

Difficiles \u00e0 observer\u00a0: <\/b><\/span><\/span><\/span>Mercure,<\/span><\/span><\/span> <\/b>Uranus, Neptune<\/span><\/span><\/span><\/p>\n

Inobservable\u00a0: Mars<\/h3>\n

Mercure <\/b><\/span><\/span><\/span>(-1,0\/-0,8), les premiers jours du mois seulement, le matin dans la constellation de la Vierge, se l\u00e8ve le 1 \u00e0 4\u00a0h 18 m, le 15 \u00e0 5 h 42\u00a0m et le 31 \u00e0 7\u00a0h 09\u00a0m soit respectivement 1 h 24 m et 0 h 23 m avant et 0 h 37 m apr\u00e8s le Soleil <\/span><\/span><\/span><\/p>\n

V\u00e9nus<\/b><\/span><\/span><\/span> (-4,5\/-4,3), le matin dans la constellation du Lion et en plus grande \u00e9longation occidentale le 23, se l\u00e8ve le 1 \u00e0 1\u00a0h 45\u00a0m, le 15 \u00e0 1\u00a0h 51 m et le 31 \u00e0 2\u00a0h 10 m <\/span><\/span><\/span><\/p>\n

Mars <\/b><\/span><\/span><\/span>(+1,7\/+1,5), passe au m\u00e9ridien le 1 \u00e0 12\u00a0h 28 m, le 15 \u00e0 12\u00a0h 08\u00a0m et le 31 \u00e0 11\u00a0h 46\u00a0m, d\u00e8s lors non observable <\/span><\/span><\/span><\/p>\n

Jupiter <\/b><\/span><\/span><\/span>(-2,8\/-2,9), une grande partie de la nuit dans la constellation du B\u00e9lier, se l\u00e8ve le 1 \u00e0 18\u00a0h 31\u00a0m, le 15 \u00e0 17\u00a0h 34\u00a0m et le 31 \u00e0 16\u00a0h 25\u00a0m <\/span><\/span><\/span><\/p>\n

Saturne<\/b><\/span><\/span><\/span> (+0,6\/+0,7), une partie de la nuit jusqu\u2019\u00e0 son coucher dans la constellation du Verseau, se l\u00e8ve le 1 \u00e0 16 h 18\u00a0m, le 15 \u00e0 15 h 22 m et le 31 \u00e0 14 h 19\u00a0m <\/span><\/span><\/span><\/p>\n

Uranus <\/b><\/span><\/span><\/span>(+5,7\/+5,7), pendant une bonne partie de la nuit dans la constellation du B\u00e9lier, passe au m\u00e9ridien le 1 \u00e0 2 h 25\u00a0m, le 15 \u00e0 1 h 29\u00a0m et le 31 \u00e0 0\u00a0h 23\u00a0m <\/span><\/span><\/span><\/p>\n

Neptune <\/b><\/span><\/span><\/span>(+7,8\/+7,8), une grande partie de la nuit au-dessus de l\u2019horizon jusqu\u2019\u00e0 son coucher dans la constellation des Poissons, passe au m\u00e9ridien le 1 \u00e0 22 h 48 m, le 15 \u00e0 21 h 50 m et le 31 \u00e0 20 h 48\u00a0m <\/span><\/span><\/span><\/p>\n

Pour en savoir plus :<\/i><\/strong>
\nAnnuaire 2023 de l\u2019Observatoire royal de Belgique<\/a> (En vente \u00e0 l\u2019Observatoire : EUR 13,00)<\/i>
\nEph\u00e9m\u00e9rides du mois dans la revue Ciel et Terre<\/i> de la Soci\u00e9t\u00e9 Royale belge d\u2019Astronomie, de M\u00e9t\u00e9orologie et de Physique du Globe SRBA (www.srba.be<\/a>)<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

AVIS IMPORTANT : Pour obtenir l\u2019heure officielle, ajouter DEUX heures aux heures indiqu\u00e9es ci-dessous (en Temps Universel UT pour Uccle) Ph\u00e9nom\u00e8nes c\u00e9lestes int\u00e9ressants 2 La Lune en conjonction \u00e0 3\u00b0 N de Jupiter (-2,8) \u00e0 3 h 5 La Lune en plus grande d\u00e9clinaison (+28\u00b019\u2019) pour l\u2019ann\u00e9e en cours \u00e0 21 h 10 m Passage […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[51],"tags":[],"featured_image_src":{"landsacpe":false,"list":false,"medium":false,"full":false},"_links":{"self":[{"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/posts\/4107"}],"collection":[{"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/comments?post=4107"}],"version-history":[{"count":1,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/posts\/4107\/revisions"}],"predecessor-version":[{"id":4108,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/posts\/4107\/revisions\/4108"}],"wp:attachment":[{"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/media?parent=4107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/categories?post=4107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/robinfo.oma.be\/fr\/wp-json\/wp\/v2\/tags?post=4107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}