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The find of three fragments (91g (Filip Samuel Nikodem), 57g (Kryspin Kmieciak), 23g (Micha\u0142 Nebelski)) of one mass (171.66 g (wet) in total) on a field at location 52\u00b037’38.1″N, 12\u00b043’50.6″E<\/a> at 11:48 CET on 25 January, already in the Paulineaue community, was reported on the same day by a commercial Polish search team consisting of Filip Samuel Nikodem, Micha\u0142 Nebelski, Kryspin Kmieciak and Andrzej Owczarzak from Pozna\u0144 in Poland. This find was crucial to help other search teams to know what kind of meteorite they had to look for.<\/p>\n\n\n\n On 26 January (9:30 a.m. CET) Gucsik Bence and Zoltan Balla from Hungary found a 111.193-gram specimen (dried) around the approximate location ~52\u00b037’23.7″N, 12\u00b044’21.6″E<\/a> in the forest after only 58 minutes of searching. At 14:50 CET on 26 January Ingo Herkstroeter found an intact 52.56-gram specimen at location 52\u00b037’32.5″N, 12\u00b044’42.1″E<\/a>. On the same day around 1 p.m. first Dominik Dieter (24) and then Cara Weher (18), two geology students at the Freie Universit\u00e4t Berlin, found two small specimens (4.5 gr. and 3.1 gr.) near Berge (Nauen). The two students were members of the meteorite search team of the Museum f\u00fcr Naturkunde Berlin (MfN) and its cooperation partners, including the Freie Universit\u00e4t Berlin and the German Aerospace Center (DLR). The specimens will be added to the meteorite collection of the Museum f\u00fcr Naturkunde Berlin. German meteorite enthusiast David G\u00f6ttlich found a specimen of 37.5 grams (dried, 39.x g when found wet) as well. On 27 January Andreas M\u00f6ller, J\u00fcrgen and Manuela Rendtel, Ina Rendtel, Peter Lindner and Felix Bettonvil of the search team of Arbeitskreis Meteore e.V. (AKM) found about 10 masses and fragments at three locations near Ribbeck, five after only 7 minutes and 30 seconds of searching and within the first two hours of search. At location 52\u00b037’07.8″N, 12\u00b045’56.9″E<\/a> several fragments of a 47.01-gram (45.89 g dry) mass, which most likely fragmented on impact, were found. Ina Rendtel found the first 14.76-gram fragment at 09:22 CET, then Peter Lindner found a 20.67-gram (19.64 g dry) fragment nearby, which was analysed from 29 January by Detlev Degering for short-lived radio isotopes with Gamma spectrometry at VKTA’s Niederniveaumesslabor Felsenkeller in Dresden. The third found fragment, weighing 4.3 grams, was found by Ina Rendtel and was analysed by Prof. Addi Bischoff at M\u00fcnster University, including making thin sections. Another small 1.36-gram fragment was found by Felix Bettonvil and is currently held and analysed at Delft University of Technology in the Netherlands. After J\u00fcrgen Rendtel found a 3.56-gram specimen several other very small fragments of the 47.01-gram (45.89 g dry) could be retrieved. At 11:09 CET on the same day the AKM team member J\u00fcrgen Rendtel found a 20.51-gram mass at location 52\u00b037’05.8″N, 12\u00b045’53.6″E<\/a>. Finally, at 14:04 CET team member Andreas M\u00f6ller found a fragmented 15.59-gram specimen at location 52\u00b036’54.2″N, 12\u00b046’21.4″E<\/a>. The search team of the Museum f\u00fcr Naturkunde Berlin (MfN) and its cooperation partners (including Nimisha Verma, Julia Maia and Dr. La\u00ebtitia Allibert) found 10 specimens on the same day as well. A 22.04-gram mass was found by Julien Liehmann. On 27 January Tobias Hofmann found a 14.20-gram (dry) specimen at location 52\u00b037’05.3″N, 12\u00b045’33.3″E<\/a> near Ribbeck. On 27 January Dennis Harries found a mass of 10.2 grams at location 52.61542\u00b0 N, 12.77355\u00b0 E<\/a>. At 13:15 CET on 28 January AKM team members Petra Strunk found a 4.77-gram specimen at location 52\u00b036’35.9″N, 12\u00b047’48.7″E<\/a> and at 16:16 CET Antal Igaz found a 26.2-gram (25.58 g dry) mass at location 52\u00b037’03.5″N, 12\u00b046’11.8″E<\/a>. Antal Igaz’s find was also analysed from 29 January by Detlev Degering at VKTA’s Niederniveaumesslabor Felsenkeller in Dresden and is exposed at the Konkoly Observatory in Hungary where Kriszti\u00e1n S\u00e1rneczky discovered 2024 BX1. On 28 January the MfN\/DLR team found 9 specimens. The team around Filip Samuel Nikodem, Micha\u0142 Nebelski, Kryspin Kmieciak and Kazimierz Magneto reportedly found four additional specimens weighing 60, 30, 20 and 5 grams. On 28 January Mateusz Z\u0307mija, Jaros\u0142aw Morys, Micha\u0142 Zimny, and Marzena Rogozin\u0301ska found two specimens, weighing 9.251 (52\u00b037’15.1″N, 12\u00b045’40.1″E<\/a>) and 3.384 grams (52\u00b036’41.8″N, 12\u00b046’39.8″E<\/a>), near Ribbeck and between Ribbeck and Berge. At 9:34 a.m. on 28 January Agata Roicka found a 21.16-gram specimen and in the afternoon Zsofia Biro (of the Bence search group) found a 5.2-gram specimen at location 52\u00b036’55.4″N, 12\u00b046’29.5″E<\/a>. On 29 January Sven Lauber found a ~3.8-gramm specimen. Late on the same day (29-30 Jan.) Kryspin Kmieciak announced the find of a wet 225-gram mass (212 g dry) in the forest around the approximate location ~52\u00b037’26.7″N, 12\u00b044’23.8″E<\/a>. On 30 January Michael Hurtig found a 14.13-gramm mass (3.1×2.5 cm). On the same day Em\u0151di Csaba, Nagy Oliv\u00e9r, Kereszty Zsolt of the Hungarian Meteoritical Society reported the finding of two masses (10.62 grams (dried, 11.04 when found wet at 9:50 a.m.) (52\u00b036’34.308” N, 12\u00b047’21.681” E<\/a>) and ~21 grams (wet in situ) (52\u00b036’30.380” N, 12\u00b047’21.257” E<\/a>) south of Berge. Then on 3 February the Hungarian team found its third meteorite. On 30 January (10.05 a.m.) Mirko Graul found a thumb-seized 14.84-gram mass. On 2 February Pawe\u0142 Zar\u0119ba found two specimens in four fragments and some crumbs weighing 17.2 grams. The first specimen found around 10:43 a.m. weighs 9.2 grams and was found at location 52\u00b036’28.1″N, 12\u00b047’46.0″E<\/a>. The second one weighs 8 grams and was found around 13:36 p.m. at location 52\u00b036’23.0″N, 12\u00b048’23.4″E<\/a>. At 10:44 CET on 3 February Ingo Herkstroeter found an intact 11.11-gram specimen at location 52\u00b036’48.6″N, 12\u00b047’00.6″E<\/a>. Also on 3 February Thomas Becker found a 12-gram specimen (28 x 23 x 17 mm) and in the afternoon Daniel Steiniger found a 5.45-gram specimen at location 52\u00b036’19.3″N, 12\u00b048’28.2″E<\/a> . On the same day at around 10:08 a.m. Pawe\u0142 Zar\u0119ba found a third mass (5.7 g, two fragments) at location 52\u00b036’24.8″N, 12\u00b048’16.9″E<\/a>. Some commercial search teams have found other smaller masses. At 13:50 CET on 3 February Andreas M\u00f6ller (AKM) found an oriented 2.86-gram specimen at location 52\u00b036’46.2″N, 12\u00b048’27.1″E<\/a> and in the afternoon Sang-Hyeok Lee found a 11.7-gram mass (dried, wet in-situ weight was 12.4g) at location 52\u00b036’42.0″N, 12\u00b047’04.0″E<\/a>. On the same day Tom Hughes found a 4.14-gram (dry) mass (4.4g when in situ) at location 52\u00b036.628′ N, 12\u00b048.513′ E<\/a>. At 9:03 CET on 3 February Maksymilian Jakubczak found a 4.93-gram fragment which matches a 5.27-gram fragment (incl. 0.04 g of smaller crumbs; 5.67 g when wet in-situ) found by Szymon Koz\u0142owski at 16:42 CET on the same day (3 February) at location 52\u00b036’14.4″N, 12\u00b048’42.8″E<\/a>, 756 meters away. Koz\u0142owski’s fragment is on display at the Astronomical Observatory of the University of Warsaw. At 11:22 a.m. on 3 February Mieszko Ko\u0142odziej found a 22.039-gram specimen. At 10:51 CET on 4 February AKM team member Andr\u00e9 Kn\u00f6fel found a 3.73-gram specimen at location 52\u00b036’43.6″N, 12\u00b048’14.3″E<\/a>. All together the AKM team members have found about 126.29 grams of meteorites at eight different locations. On 4 February Julien Liehmann found an oriented 7-gram mass and Michael Hurtig found a 2.80-gram (2.80g and 0.02g) specimen and a 12.40-gram mass. On 11 February he found another four partly fragmented specimens weighing between 1.5 and 4.5 grams. Commercial search teams from Poland found several specimens (~3g, ~5g, ~5g, and ~5g on 2 February, 3.3g on 3 February). On 4 February Leon Thann found a 5.193-gram specimen and in the early afternoon Olek B\u0142asiak found an 8.11-gram mass, reportedly at location 52\u00b036’54.0″N, 12\u00b047’33.0″E<\/a>. At 11:17 CET on 10 February Ingo Herkstroeter found a slightly oriented 2.03-gram specimen at location 52\u00b036’30.168″N, 12\u00b049’08.327″E<\/a>. Also on 10 February Ralf Simmat and Charlotte Bedke found a 24.37-gram mass (25.74 gram in situ) near Ribbeck and Leon Thann reportedly found a 4.640-gram mass. On the same day Mirko Graul found a 1.96-gram (1.937 g dry) specimen and on 15 February he found a 2.69-gram (dry) fragment. On 11-12 February Enrico Hoff and his son found four specimens including a 5.41-gram and a 2.77-gram mass. Richard ‘Di’ reports having found a 47.5-gram specimen on 11 February at location 52\u00b036’32.7″N, 12\u00b047’42.8″E<\/a>. Zsolt Kereszty reports having found a 3.6-gram specimen on a field south of Lietzow on 14 February. On 14 February Tomasz Aurora reports the find of a 3.19-gram specimen near the wind park south of Berge. At 15:30 CET on 15 February 2024 Thomas Naumann found 7.79-gram specimen (wet, ~2 x ~2 cm) at location 52\u00b036’29.2″N, 12\u00b048’17.1″E<\/a>. On the same day Marcin Ro\u015bciszewski reportedly found a 6.716-gram mass and Jaros\u0142aw Morys reportedly found a 1.894-gram and an oriented 3.384-gram specimen with flowlines. On 16 February Jaros\u0142aw Morys’s team reportedly found a 9.263-gram mass and on 17 February a 2.532-gram specimen. At 14:58 CET on 21 February Abdelkabir Oulgour found a 2.4-gram specimen at location 52\u00b036’23.0″N, 12\u00b049’19.9″E<\/a> and at 16:12 CET on 22 February he found an oriented 2.38-gram specimen at location 52\u00b036’27.3″N, 12\u00b049’24.4″E<\/a>. On 25 February Marzena Rogozi\u0144ska reportedly found a 2.86-gram specimen near location 52\u00b036’27.1″N, 12\u00b048’10.6″E<\/a>. On 27 February Mirko Graul found his fourth meteorite, weighing 1.07 grams. At 16:18 CET on 5 March Ingo Herkstroeter found a 3.01-gram fragment (2.56 g, 0.22 g and 0.23 g in crumbs) at location 52\u00b036’15.552″N, 12\u00b049’47.1″E<\/a> and at 15:36 CET on 6 March he found another 4.48-gram fragment (4.36 g and 0.12 g of crumbs) at location 52\u00b036’32.256″N, 12\u00b047’3.66″E<\/a>. At 16:46 CET on 9 March Andreas M\u00f6ller (AKM) found a fully-crusted 7.36-gram (dried) specimen at location 52\u00b036’32.3″N, 12\u00b048’31.2″E<\/a> and Hartmut Osterburg found a 1.56-gram fragment at location 52\u00b036’32.7″N, 12\u00b047’42.8″E<\/a>. On 11 March Frank Rauschenbach found a 1.49-gram specimen at location 52\u00b036’22.9″N, 12\u00b049’22.9″E<\/a>. At about 12:14 CET on 20 March Stefan Ralew found a beautifully oriented 0.872-gram specimen at location 52\u00b036’32.0″N, 12\u00b049’02.1″E<\/a>. At 14:47 CET on 27 March Thomas Bieber found a 3.335-gram mass (dry) which shattered into in five fragments on impact. The biggest fragment (2.1 x 1.5 cm) weighs 2.741 grams and the second largest fragment 0.360 grams. All fragments were found within a radius of about 20 centimetres at location <52\u00b036.324N, 12\u00b050.311E<\/a>. Many private German, Polish and Hungarian meteorite enthusiasts found their very first meteorite during this winter’s Ribbeck search activity. Several finders, especially the ones of larger masses, report that the found specimens emit a sulphurous smell, possibly because of the terrestrial weathering of Oldhamite within the meteorites. The official classification of the meteorite started on 29 January and the classification results were sent to the NomCom of the Meteoritical Society on 2 February 2024.<\/p>\n\n\n\n On 25 September 2024 the Franco-German culture TV channel ARTE broadcast the 30-minute documentary film Re: Auf der Jagd nach Meteoriten<\/strong><\/a> \/ ARTE Regards: Chasseurs de m\u00e9t\u00e9orites<\/strong><\/a> about private search activities and scientific studies around the Ribbeck meteorite fall.<\/p>\n\n\n\n On 17 March 2024 the Arbeitskreis Meteore e.V. published its first map of the Ribbeck strewn field online. A revised version of the map contains 203 find locations revealed by 11 July 2024. The map below (203 finds by 11 July) was created by Andreas M\u00f6ller (Arbeitskreis Meteore e.V.)<\/p>\n\n\n\n Our Ribbeck strewn field map (Version 10, updated 2 April 2024, 10:10 CET)<\/p>\n\n\n\n Currently known strewn field, based on kindly provided data from different finders. We thank all the finders very much for sharing their information! The colour strips show the calculated potential fall locations of different masses and their assumed weight (effective 8 February 2024), including some uncertainties, which were created during the observed fragmentation of the meteoroid (between 5.50 and 6.30 seconds after 00:32:38 UT), as recorded with Sirko Molau’s camera AMS16 in Ketz\u00fcr (Beetzseeheide) and by Michael Aye from Lichtenrade, Tempelhof-Sch\u00f6neberg, Berlin. There were apparently larger uncertainties concerning the calculated fall locations of masses because of measurement issues with Michael Aye’s handheld smartphone video. The uncertainties are actually substantially larger than indicated in the coloured stripes in the image above (effective 8 February 2024). These calculations of possible fall locations of masses were provided and published as first update on 8 February 2024 (22.00 CET) and second update (an updated calculated fall zone for the presumed and yet unfound mass M (~400 g, broad red strip) and F (80\u201390 g, broad violet strip ) on 14 February (17:30 CET) by the excellent team of Pavel Spurn\u00fd, Ji\u0159\u00ed Borovi\u010dka and Luk\u00e1\u0161 Shrben\u00fd of the Department of Interplanetary Matter at the Czech Institute of Astronomy of the CAS and can be found here: Z\u00e1nik mal\u00e9 planetky 2024 BX1 z\u00e1padn\u011b od Berl\u00edna 21. ledna 2024 zachycen\u00fd kamerami Evropsk\u00e9 bolidov\u00e9 s\u00edt\u011b<\/a> Image: karmaka<\/p>\n\n\n\n We kindly invite any finders of Ribbeck meteorites to send us ( ribbeckmeteorite(et)planet.ms<\/strong> ) their information about fall locations and weights of found masses, which will then be added to the map above and forwarded to the Museum of Natural History, Berlin so that the finds and locations can be officially documented and added to future scientific publications about this extraordinary meteorite fall. Thank you!<\/p>\n\n\n\n The bolide’s trajectory projected to the ground (as provided by Pavel Spurn\u00fd, Ji\u0159\u00ed Borovi\u010dka a Luk\u00e1\u0161 Shrben\u00fd, see above, in cooperation with AllSky7Germany: (Sirko Molau, Andr\u00e9 Kn\u00f6fel and Mike Hankey (AMS)) and the fall locations of some meteorite masses (as of 8 February), kindly provided by several finders of meteorites. Image: karmaka<\/p>\n\n\n\n Atmospheric entry and fragmentation of small asteroid 2024 BX1: Bolide trajectory, orbit, dynamics, light curve, and spectrum<\/strong><\/a><\/p>\n\n\n\n P. Spurny, J. Borovicka, L. Shrbeny, M. Hankey, R. Neubert<\/p>\n\n\n\n A&A article proposed for acceptance<\/p>\n\n\n\n “Asteroid 2024 BX1 was the eighth asteroid discovered shortly before colliding with the Earth.The associated bolide was recorded by dedicated instruments of the European Fireball Network and the AllSky7 network on January 21, 2024 at 0:32:38-44 UT. Here we report a comprehensive analysis of this instrumentally observed meteorite fall, which occurred as predicted west of Berlin, Germany. The atmospheric trajectory was quite steep with an average slope to the Earth’s surface 75.6 degrees. The entry speed was 15.20 km\/s. The heliocentric orbit calculated from the bolide data agrees very well with the asteroid data. However, the bolide was fainter than expected for a reportedly meter-sized asteroid. The absolute magnitude reached -14.4 and the entry mass was estimated to 140 kg. The recorded bolide spectrum was low in iron from what an enstatite-rich meteorite was expected. Indeed, the recovered meteorites, called Ribbeck, were classified as aubrites. The high albedo of enstatite (E-type) asteroids can explain the size discrepancy. The asteroid was likely smaller than 0.5 meter and should be rather called a meteoroid. During the atmospheric entry, the meteoroid severely fragmented into much smaller pieces already at a height of 55 km under the aerodynamic pressure of 0.12 MPa. The primary fragments were then breaking-up again, most frequently at heights 39-29 km (0.9-2.2 MPa). Numerous small meteorites and up to four stones larger than 100g were expected to land. Within a few days of publishing the strewn field dozens of meteorites were found in the area we predicted.”<\/p>\n\n\n\n First reported find (171.66 grams)<\/strong><\/p>\n\n\n\n Two broken fragments (91g and 57g) combined. Photo published by Zsolt Kereszty on 25 January 2024<\/p>\n\n\n\n Three fragments (91g, 57g and 23g) of a 171.66-gram mass combined, with translucent fusion crust and flow lines. Photo published by Zsolt Kereszty on 25 January 2024 <\/p>\n\n\n\n The broken face of the 91-gram fragment of the 171.66-gram mass. Photo: Filip Samuel Nikodem<\/p>\n\n\n Two fragments (91g, 57g). Photo published by Filip Samuel Nikodem on 25 January 2024<\/p>\n\n\n\n One of the first found fragments (91g). Photo published by Zsolt Kereszty on 25 January 2024 <\/p>\n\n\n\n One of the first found fragments. Photo published by Zsolt Kereszty on 25 January 2024 <\/p>\n\n\n\n Second reported find (111.1927 grams (dried), intact specimen)<\/strong> <\/p>\n\n\n\n 111.193-gram mass in situ. Photo: Gucsik Bence <\/p>\n\n\n\n Almost fully fusion-crusted 111.193-gram mass in situ. Photo: Gucsik Bence <\/p>\n\n\n\n Beautiful glossy fusion crust with contraction cracks of the 111.193-gram mass in situ. Photo: Gucsik Bence <\/p>\n\n\n\n 111.193-gram mass in situ in foliage auf the forest near Ribbeck on 26 January 2024. Photo: Gucsik Bence <\/p>\n\n\n\n Photo: Gucsik Bence <\/p>\n\n\n\n Third reported find<\/strong> (37.79 grams, intact specimen<\/strong>)<\/p>\n\n\n\n Specimen in situ (37.79 grams, about 4.7 cm in length) Photo: David G\u00f6ttlich<\/p>\n\n\n\n Photo: David G\u00f6ttlich <\/p>\n\n\n\n Photo: David G\u00f6ttlich <\/p>\n\n\n\n Fourth and fifth reported finds<\/strong> (4.5 and 3.1 grams)<\/strong><\/p>\n\n\n\n![\"\"](\"https:\/\/karmaka.de\/wp-content\/uploads\/2025\/01\/2024-07-11-ribbeck-streufeld-1024x543.jpg\")
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