UFO sightings by period

UFO sightings in 2011: 141 reports

SkyUnknown lists 141 UFO sightings in 2011 worldwide, drawn from official records: GEIPAN (CNES) for 134 cases, Aeronautica Militare (Italie) for 5, and PURSUE (gouvernement des États-Unis) for 2.

Of the 141 cases with a conclusion from their source, 65% are explained (with certainty or probably), 28% lack the data to conclude, and 10 remain unidentified. The most frequent identified causes: sky lanterns (32); aircraft (11); meteors and fireballs (9).

Most frequently named places: Toulouse (3), Chardogne (2), Chamalières (2), and Valenciennes (2).

cases: 141
unidentified: 10
period: 2011
sources: 3

Map of the cases

Notable cases

The most complete records: account of the sighting, conclusion of the official investigation.

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Identified causes

For cases explained with certainty or probably.

By country

All sightings

Date	Place	Status	Identified cause
December 26, 2011	Clamart · Hauts-de-Seine	Probably explained	Sky lanterns
December 25, 2011	Mazan · Vaucluse	Probably explained	Sky lanterns
December 25, 2011	Rivière-Salée · Martinique	Probably explained	Sky lanterns
December 24, 2011	Debris Spatiaux (retombee) — National	Explained	Re-entries
December 20, 2011	Paris	Probably explained	Sky lanterns
December 10, 2011	Froissy · Oise	Insufficient data
December 10, 2011	Le Diamant · Martinique	Insufficient data
December 2, 2011	Paris	Insufficient data
November 27, 2011	Saint-Gatien-des-Bois · Calvados	Probably explained
November 26, 2011	Le Havre · Seine-Maritime	Explained	Meteors and fireballs
November 26, 2011	Saint-Brieuc · Côtes-d'Armor	Probably explained	Sky lanterns
November 20, 2011	Montgras · Haute-Garonne	Probably explained	Stars
November 20, 2011	Ourouer-les-Bourdelins · Cher	Insufficient data
November 19, 2011	Noyarey · Isère	Probably explained	Sky lanterns
November 12, 2011	Florange · Moselle	Probably explained	Sky lanterns
November 9, 2011	Cosne-sur-Loire · Nièvre	Insufficient data
November 6, 2011	La Ville-du-Bois · Essonne	Probably explained	Balloons
October 30, 2011	Blanquefort · Gironde	Probably explained	Balloons
October 26, 2011	Jouars-Pontchartrain · Yvelines	Insufficient data
October 26, 2011	Lamnay · Sarthe	Unexplained
October 26, 2011	Loriol-sur-Drôme · Drôme	Probably explained	Aircraft
October 23, 2011	Val-de-Reuil · Eure	Probably explained	Stars
October 22, 2011	Bois-Guillaume · Seine-Maritime	Insufficient data
October 21, 2011	Rentree Atmospherique — National	Probably explained
October 21, 2011	Saint-Jean-d'Angély · Charente-Maritime	Probably explained	Ground lights and lasers
October 20, 2011	Fleury-Mérogis · Essonne	Probably explained	Space station (ISS)
October 17, 2011	Os-Marsillon · Pyrénées-Atlantiques	Insufficient data
October 10, 2011	Benesse · Landes	Probably explained	Sky lanterns
October 7, 2011	Couëron · Loire-Atlantique	Insufficient data
October 1, 2011	Blois · Loir-et-Cher	Insufficient data
October 1, 2011	Carrières-sous-Poissy · Yvelines	Probably explained	Balloons
October 1, 2011	Maizières-lès-Metz · Moselle	Probably explained	Sky lanterns
September 30, 2011	Cesny-Bois-Halbout · Calvados	Insufficient data
September 28, 2011	Ferrassières · Drôme	Insufficient data
September 27, 2011	Carcans · Gironde	Insufficient data
September 25, 2011	Arras · Pas-de-Calais	Insufficient data
September 24, 2011	Paris	Probably explained	Meteors and fireballs
September 17, 2011	Le Bouscat · Gironde	Insufficient data
September 13, 2011	Chanousse · Hautes-Alpes	Explained	Stars
September 10, 2011	Saint-Brice-Courcelles · Marne	Probably explained	Sky lanterns
September 9, 2011	Montauban · Tarn-et-Garonne	Probably explained	Meteors and fireballs
September 3, 2011	Cesson-Sévigné · Ille-et-Vilaine	Explained	Sky lanterns
September 3, 2011	Juvisy-sur-Orge · Essonne	Probably explained	Sky lanterns
September 1, 2011	Bar-le-Duc · Meuse	Probably explained	Sky lanterns
August 28, 2011	Autrèche · Indre-et-Loire	Probably explained	Sky lanterns
August 28, 2011	Chardogne · Meuse	Insufficient data
August 26, 2011	La Seyne-sur-Mer · Var	Explained	Reflections and photo artefacts
August 26, 2011	Mareuil-le-Port · Marne	Insufficient data
August 25, 2011	Les Mées · Alpes-de-Haute-Provence	Insufficient data
August 24, 2011	Toulouse · Haute-Garonne	Insufficient data
August 24, 2011	Trouville · Seine-Maritime	Insufficient data
August 20, 2011	42.67°, 9.60° · Corse-du-Sud	Probably explained	Aircraft
August 20, 2011	Chamalières · Puy-de-Dôme	Explained	Hoaxes
August 19, 2011	Martiel · Aveyron	Insufficient data
August 10, 2011	Rambouillet · Yvelines	Probably explained	Aircraft
August 6, 2011	Sista Bassa E Cona (Ve)	Unexplained
August 4, 2011	Cugnaux · Haute-Garonne	Probably explained	Satellites
August 3, 2011	La Lande-de-Fronsac · Gironde	Insufficient data
August 2, 2011	Bolide — Toulouse · Haute-Garonne	Explained	Meteors and fireballs
August 2, 2011	Langon · Gironde	Insufficient data
August 2, 2011	Sare · Pyrénées-Atlantiques	Probably explained	Birds, insects, nature
August 1, 2011	Le Cannet · Alpes-Maritimes	Explained	Aircraft
July 31, 2011	Caussade · Tarn-et-Garonne	Probably explained	Meteors and fireballs
July 23, 2011	Limoux · Aude	Probably explained	Sky lanterns
July 23, 2011	Pierrefonds · Oise	Explained	Sky lanterns
July 22, 2011	Cagnes-sur-Mer · Alpes-Maritimes	Probably explained	Sky lanterns
July 18, 2011	La Robine-sur-Galabre · Alpes-de-Haute-Provence	Probably explained	Birds, insects, nature
July 18, 2011	Tanneron · Var	Probably explained	Aircraft
July 14, 2011	Valenciennes · Nord	Probably explained	Sky lanterns
July 12, 2011	Firenze	Unexplained
July 10, 2011	Châteaufort · Yvelines	Explained	Sky lanterns
July 10, 2011	Iles-des-Pins	Probably explained	Meteors and fireballs
July 3, 2011	Chamalières · Puy-de-Dôme	Insufficient data
July 2, 2011	Bergues · Nord	Explained	Sky lanterns
July 2011	Aix-les-Bains · Savoie	Insufficient data
June 30, 2011	Venizel · Aisne	Probably explained	Aircraft
June 28, 2011	Gourbit · Ariège	Explained	Reflections and photo artefacts
June 27, 2011	Maisons-Alfort · Val-de-Marne	Probably explained	Sky lanterns
June 26, 2011	La Capelle-et-Masmolène · Gard	Insufficient data
June 26, 2011	Plaisir · Yvelines	Insufficient data
June 26, 2011	Pordenone	Unexplained
June 26, 2011	Saint-André-de-Double · Dordogne	Insufficient data
June 24, 2011	Valenciennes · Nord	Insufficient data
June 20, 2011	Mézens · Tarn	Probably explained	Aircraft
June 15, 2011	Aiglemont · Ardennes	Probably explained	Space station (ISS)
June 15, 2011	Chozeau · Isère	Probably explained	Ground lights and lasers
June 15, 2011	Lauret · Hérault	Insufficient data
June 14, 2011	Fourg · Doubs	Explained	Space station (ISS)
June 14, 2011	Peynier · Bouches-du-Rhône	Insufficient data
June 13, 2011	Agde · Hérault	Probably explained	Ground lights and lasers
June 13, 2011	Annecy-le-Vieux · Haute-Savoie	Explained	Space station (ISS)
June 12, 2011	Punaaiua	Insufficient data
June 12, 2011	Wiwersheim · Bas-Rhin	Probably explained	Sky lanterns
June 2, 2011	Albas · Aude	Insufficient data
May 29, 2011	Nice · Alpes-Maritimes	Probably explained	Balloons
May 25, 2011	Neuville-aux-Bois · Loiret	Probably explained	Aircraft
May 24, 2011	Toulouse · Haute-Garonne	Probably explained
May 21, 2011	Gatwick	Probably explained	Optical phenomena
May 21, 2011	Lille · Nord	Probably explained	Sky lanterns
May 13, 2011	Montmerle-sur-Saône · Ain	Insufficient data
May 13, 2011	Paris	Probably explained	Sky lanterns
May 10, 2011	Bagnolet · Seine-Saint-Denis	Probably explained	Aircraft
April 29, 2011	Lourdes · Hautes-Pyrénées	Probably explained	Sky lanterns
April 24, 2011	Toulouse · Haute-Garonne	Probably explained	Birds, insects, nature
April 21, 2011	Coudekerque · Nord	Probably explained	Sky lanterns
April 19, 2011	Rochejean · Doubs	Explained	Space station (ISS)
April 17, 2011	Ledringhem · Nord	Unexplained
April 17, 2011	Richebourg · Pas-de-Calais	Insufficient data
April 17, 2011	Saint-Pierre-Quiberon · Morbihan	Probably explained	Sky lanterns
April 16, 2011	Treillières · Loire-Atlantique	Probably explained	Sky lanterns
April 14, 2011	Reims · Marne	Probably explained	Ground lights and lasers
April 9, 2011	Gif-sur-Yvette · Essonne	Insufficient data
April 8, 2011	Chomérac · Ardèche	Insufficient data
April 8, 2011	Franconville · Val-d'Oise	Explained	Balloons
April 7, 2011	Paris	Probably explained	Sky lanterns
April 5, 2011	Cotignac · Var	Probably explained	Meteors and fireballs
April 2, 2011	Besançon · Doubs	Probably explained	Sky lanterns
March 23, 2011	Meyrignac-l'Église · Corrèze	Probably explained	Satellites
March 23, 2011	Verfeil · Haute-Garonne	Probably explained	Aircraft
March 21, 2011	Lieusaint · Seine-et-Marne	Probably explained	Meteors and fireballs
March 20, 2011	Chardogne · Meuse	Explained	Stars
March 20, 2011	Vernouillet · Eure-et-Loir	Probably explained	Balloons
March 20, 2011	Villaines-les-Rochers · Indre-et-Loire	Probably explained	Aircraft
March 19, 2011	Mezzano	Unexplained
March 11, 2011	Lavelanet · Ariège	Explained	Planets
March 6, 2011	Châtillon-sur-Indre · Indre	Probably explained	Sky lanterns
February 26, 2011	Forcalquier · Alpes-de-Haute-Provence	Probably explained	Ground lights and lasers
February 26, 2011	Louveciennes · Yvelines	Probably explained	Sky lanterns
February 26, 2011	Nieul-sur-l'Autise · Vendée	Insufficient data
February 20, 2011	Évreux · Eure	Probably explained	Meteors and fireballs
February 18, 2011	Rentree Atmospherique · Essonne	Probably explained	Re-entries
February 15, 2011	Agen · Lot-et-Garonne	Unexplained
February 13, 2011	Lamarque-Pontacq · Hautes-Pyrénées	Explained	Planets
February 3, 2011	Perpignan · Pyrénées-Orientales	Probably explained	Space station (ISS)
February 2, 2011	Hyères · Var	Insufficient data
January 27, 2011	Marcorignan · Aude	Probably explained	Balloons
January 23, 2011	Alfedena	Unexplained
January 9, 2011	La Foa	Probably explained	Balloons
January 9, 2011	Sedan · Ardennes	Insufficient data
2011	Lieu non précisé	Unexplained
2011	Lieu non précisé	Unexplained

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The figures on this page are computed from the official records cited on each case. See sources and method

Notable cases

Lamnay

Sista Bassa E Cona (Ve)

Firenze

Pordenone

Ledringhem

Mezzano

Alfedena

Lieu non précisé