List of stars that have unusual dimming periods

This list contain stars that had periods when their apparent magnitude dropped in a way that is not typical of any class of variable stars. Most of these dimming events happened due to an occultation by a dust cloud or dust disk, but many remain without explanation. __TOC__

List

Star designationStellarclassMagnitudeRight ascension(J2000)Declination (J2000)Distance(light-years)Reason for dimming Apparent Absolute ASASSN-V J193622.23+115244.1 — 14.0–15.5 — 6592 Unknown ASASSN-V J213939.3-702817.4 F0V 12.95–14.22 2.5 3630 Unknown Betelgeuse M1-2 +0.50 — — "large-grain circumstellar dust" EPIC 204278916 M1 13.7 — — Dust disk ASASSN-24fw 14 17 Circumplanetary disk around an orbiting planet EPIC 204376071 M — — 440 Possibly giant planet or brown dwarf with rings HD 139139(EPIC 249706694) G3/5V 9.84; 9.677 — 350 Unknown. Observed dimmings may have been due to instrumental errors. KH 15D K7 15.5–21.5 6.226 773 Possibly circumbinary disk KIC 4150611(HD 181469) Pulsator/K/M/G — — — Five-star system PDS 110 keF6 IVeb 10.422 2.54 1090 Possibly eclipses by circumstellar dust RW Cephei K2 0-Ia 6.0–7.6 — Great dimming event similar to Betelgeuse RZ Piscium K0 IV 11.29–13.82 — 550 Substantial mass of gas and dust, possibly from disrupted planet Tabby's Star(KIC 8462852) F3V 11.705 3.08 1470 Unknown — — — — — — "probably from an orbiting body that periodically emits clouds of dust that occult the star" V1400 Centauri K5 IV(e) Li 12.31 — 434 Eclipse by a free-floating brown dwarf or rogue planet with a circumstellar disk or ring system VVV-WIT-07 — 14.35–16.164 — 23000/? Unknown WD 1145+017(EPIC 201563164) DB 17.0 — 570 Dust disk ZTF J0139+5245(ZTF J013906.17+524536.89) DA 18.4 — 564 Dust disk Gaia17bpp M0-III 16.13–20.48 — 27,600 Dust disk Gaia21bcv K4.5V 17.70–20.12 3.2 4,508 Eclipse by a substellar companion with a 0.5 AU-radius debris disk ASASSN-21js B 12.8 1.38 9,149 Eclipse by a distant substellar companion with a 1.05 AU-radius debris disk WD 1054–226 DAZ 16.0 — 118 Debris discMain-Sequence DippersFGK V13.5 - 18.5———330 - 43,000Unknown

List of stars that have unusual dimming periods

Bron en licentie