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- MACHO-1997-BLG-41 abstract "MACHO-1997-BLG-41, commonly abbreviated as 97-BLG-41 or MACHO-97-BLG-41, was a gravitational microlensing event located in Sagittarius which occurred in July 1999. The source star is likely a giant or subgiant star of spectral type K located at a distance of around 8 kiloparsecs (26,000 light years). The lens star is a binary system approximately 10,000 light years away in the constellation Sagittarius. The two stars are separated from each other by about 0.9 AU and have an orbital period of around 1.5 years. The most likely mass of the system is about 0.3 times that of our Sun. Star A and star B are both red dwarfs.The first published model of the MACHO-1997-BLG-41 event using data from Mount Stromlo Observatory, Cerro Tololo Inter-American Observatory and Wise Observatory show the lens system as being located in the galactic bulge at a distance of 6.3 kiloparsecs (21,000 light years), a total system mass of about 0.8 times that of the Sun and a separation of 1.8 AU (the most likely value given a random orientation of the system). The individual components were assigned masses 0.6 and 0.16 times that of our Sun, making them an orange dwarf of spectral class K and a class M red dwarf respectively. According to this model, a planet with around 3.5 times the mass of Jupiter orbits in a circumbinary orbit around the two stars at a distance of around 7 AU (assuming random orientation of the system).Subsequently, an independent analysis with data from five different observatories revealed that the microlensing event could be interpreted as being caused by a low-mass binary system of two red dwarf stars located in the galactic disk if one considers their orbital motion, without the need to invoke a planetary mass. A further study combining both datasets confirmed this finding. The planet is thus considered disproven.".
- MACHO-1997-BLG-41 wikiPageExternalLink exoplanet.eu.
- MACHO-1997-BLG-41 wikiPageExternalLink simbad.
- MACHO-1997-BLG-41 wikiPageExternalLink 1191a?ck=nck.
- MACHO-1997-BLG-41 wikiPageExternalLink sim-id.pl?protocol=html&Ident=MACHO+97-BLG-41.
- MACHO-1997-BLG-41 wikiPageExternalLink 97-BLG-41.html.
- MACHO-1997-BLG-41 wikiPageID "4750156".
- MACHO-1997-BLG-41 wikiPageLength "5653".
- MACHO-1997-BLG-41 wikiPageOutDegree "41".
- MACHO-1997-BLG-41 wikiPageRevisionID "696702075".
- MACHO-1997-BLG-41 wikiPageWikiLink Astronomical_unit.
- MACHO-1997-BLG-41 wikiPageWikiLink Binary_star.
- MACHO-1997-BLG-41 wikiPageWikiLink Bulge_(astronomy).
- MACHO-1997-BLG-41 wikiPageWikiLink Category:Astronomical_objects_discovered_in_1999.
- MACHO-1997-BLG-41 wikiPageWikiLink Category:Binary_stars.
- MACHO-1997-BLG-41 wikiPageWikiLink Category:Gravitational_lensing.
- MACHO-1997-BLG-41 wikiPageWikiLink Category:M-type_main-sequence_stars.
- MACHO-1997-BLG-41 wikiPageWikiLink Category:Sagittarius_(constellation).
- MACHO-1997-BLG-41 wikiPageWikiLink Cerro_Tololo_Inter-American_Observatory.
- MACHO-1997-BLG-41 wikiPageWikiLink Constellation.
- MACHO-1997-BLG-41 wikiPageWikiLink Delta_Trianguli.
- MACHO-1997-BLG-41 wikiPageWikiLink Disc_(galaxy).
- MACHO-1997-BLG-41 wikiPageWikiLink Giant_star.
- MACHO-1997-BLG-41 wikiPageWikiLink Gravitational_microlensing.
- MACHO-1997-BLG-41 wikiPageWikiLink HD_202206.
- MACHO-1997-BLG-41 wikiPageWikiLink Hypothetical_astronomical_object.
- MACHO-1997-BLG-41 wikiPageWikiLink Jupiter.
- MACHO-1997-BLG-41 wikiPageWikiLink K-type_main-sequence_star.
- MACHO-1997-BLG-41 wikiPageWikiLink Light-year.
- MACHO-1997-BLG-41 wikiPageWikiLink Mass.
- MACHO-1997-BLG-41 wikiPageWikiLink Massive_compact_halo_object.
- MACHO-1997-BLG-41 wikiPageWikiLink Mount_Stromlo_Observatory.
- MACHO-1997-BLG-41 wikiPageWikiLink PSR_B1620-26.
- MACHO-1997-BLG-41 wikiPageWikiLink Parsec.
- MACHO-1997-BLG-41 wikiPageWikiLink Red_dwarf.
- MACHO-1997-BLG-41 wikiPageWikiLink Sagittarius_(constellation).
- MACHO-1997-BLG-41 wikiPageWikiLink Science_(magazine).
- MACHO-1997-BLG-41 wikiPageWikiLink Star.
- MACHO-1997-BLG-41 wikiPageWikiLink Stellar_classification.
- MACHO-1997-BLG-41 wikiPageWikiLink Subgiant.
- MACHO-1997-BLG-41 wikiPageWikiLink Sun.
- MACHO-1997-BLG-41 wikiPageWikiLink Wise_Observatory.
- MACHO-1997-BLG-41 wikiPageWikiLinkText "MACHO-1997-BLG-41".
- MACHO-1997-BLG-41 appmagV "?".
- MACHO-1997-BLG-41 constell Sagittarius_(constellation).
- MACHO-1997-BLG-41 distLy "~10,000".
- MACHO-1997-BLG-41 distPc "3100".
- MACHO-1997-BLG-41 epoch "J2000.0".
- MACHO-1997-BLG-41 name "MACHO-1997-BLG-41".
- MACHO-1997-BLG-41 names "MACHO 402.47862.1576, MACHO 402.47862.1576".
- MACHO-1997-BLG-41 spectral "M / M".
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:Cite_news.
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:DEC.
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:RA.
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:Reflist.
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:Starbox_short.
- MACHO-1997-BLG-41 wikiPageUsesTemplate Template:Stars_of_Sagittarius.
- MACHO-1997-BLG-41 subject Category:Astronomical_objects_discovered_in_1999.
- MACHO-1997-BLG-41 subject Category:Binary_stars.
- MACHO-1997-BLG-41 subject Category:Gravitational_lensing.
- MACHO-1997-BLG-41 subject Category:M-type_main-sequence_stars.
- MACHO-1997-BLG-41 subject Category:Sagittarius_(constellation).
- MACHO-1997-BLG-41 hypernym Event.
- MACHO-1997-BLG-41 type Planet.
- MACHO-1997-BLG-41 type SportsEvent.
- MACHO-1997-BLG-41 type Astrophysic.
- MACHO-1997-BLG-41 type Planet.
- MACHO-1997-BLG-41 comment "MACHO-1997-BLG-41, commonly abbreviated as 97-BLG-41 or MACHO-97-BLG-41, was a gravitational microlensing event located in Sagittarius which occurred in July 1999. The source star is likely a giant or subgiant star of spectral type K located at a distance of around 8 kiloparsecs (26,000 light years). The lens star is a binary system approximately 10,000 light years away in the constellation Sagittarius.".
- MACHO-1997-BLG-41 label "MACHO-1997-BLG-41".
- MACHO-1997-BLG-41 sameAs Q5177744.
- MACHO-1997-BLG-41 sameAs m.0clb_h.
- MACHO-1997-BLG-41 sameAs Q5177744.
- MACHO-1997-BLG-41 wasDerivedFrom MACHO-1997-BLG-41?oldid=696702075.
- MACHO-1997-BLG-41 isPrimaryTopicOf MACHO-1997-BLG-41.