List of transiting circumsecondary disks

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This is a list of <a href="/facts/Binary_system/9aRPc441">binary systems</a> that have a primary star <a href="/facts/Eclipsing_binary/TYlDe1bD">eclipsed</a>, as seen from Earth, by a <a href="/facts/Circumstellar_disc/aEr3EdJF">circumstellar disk</a> around the secondary (including possible <a href="/facts/Ring_system/KNCgIIX7">ring systems</a>). A circumsecondary disk is a disk of gas and/or dust around a <a href="/facts/Star/PFbd6ICx">star</a>, <a href="/facts/White_dwarf/gIYlTtrC">white dwarf</a> or <a href="/facts/Substellar_object/vbaVWa7x">substellar object</a> that is a secondary in a <a href="/facts/Star_system/1vX99BMV">star system</a>. In rare cases the system can be aligned in a way that makes it possible for the circumsecondary disk to transit in front of the primary. In some cases the observed dips can be so deep that researchers describe these dimming events as <a href="/facts/Occultation/a9Q1KTPe">occultations</a>.
</p><p>The object <a href="/facts/J1407b/1dL9uYfV">J1407b</a> was considered a circumsecondary disk in the past, but later turned out to be more likely a free-floating planetary-mass object with a disk. <a href="/facts/PDS_110/YbVChc57">PDS 110</a> is a candidate with uncertain status, as later eclipses did not occur. <a href="/facts/VVV-WIT-07/CFqQ4d9r">VVV-WIT-07</a>, ASASSN-V J192543.72+402619.0, ASASSN-21co, FY Scuti, OGLE-BLG182.1.162852, and ZTF J185259.31+124955.2 are candidates without much modelling of the disk.
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List of transiting circumsecondary disks open-in-new

List of transiting circumsecondary disks