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See detailOccultation by (136199) Eris
Jehin, Emmanuel ULg; Manfroid, Jean ULg; Gillon, Michaël ULg et al

in International Astronomical Union Circulars [=IAUCs] (2010), 9184

E. Jehin, J. Manfroid, M. Gillon, D. Hutsemekers, and P. Magain report that they observed an occultation of a star of magnitude I about 15.2 by the dwarf planet Eris (then at V about 18.7) on Nov. 6 using ... [more ▼]

E. Jehin, J. Manfroid, M. Gillon, D. Hutsemekers, and P. Magain report that they observed an occultation of a star of magnitude I about 15.2 by the dwarf planet Eris (then at V about 18.7) on Nov. 6 using the new telescope TRAPPIST at the European Southern Observatory (La Silla). A series of 3-s exposures of a field of size 3' x 3' (1".3/pixel) were secured in fast-readout mode (with a deadtime of 1.5 s), starting at 01h50m UT for one hour. Seven frames centered at 02h19m34s UT allowed them to derive the start of the occultation as 02h19m16s.75 +/- 0s.75 and the end as 02h19m47s.6 +/- 0s.2, for a total occultation time of 30.4 +/- 1.0 seconds. The predictions (see above) made by the Rio de Janeiro group (Assafin et al., Nov. 5) and by J. L. Ortiz estimated the time of the occultation around 02h18m UT for Chile, in good agreement with the observations. During the occultation, a point source is detected with a magnitude corresponding to that of Eris. A small flux increase was also seen at the middle of the occultation, which might result from refraction in Eris' atmosphere (Elliot and Olkin 1996, Ann. Rev. Earth Planet. Sci. 24, 89). Eris is by far the most-remote solar-system object observed to date via stellar occultation, with a geocentric distance of about 96 AU. TRAPPIST is a project driven by the University of Liege, in close collaboration with the Observatory of Geneva, supported by the Belgian Fund for Scientific Research and the Swiss National Science Foundation. [less ▲]

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See detailComet C/2005 K2 (LINEAR)
Jehin, Emmanuel ULg; Nielsen, O.; Bryssinck, E.

in International Astronomical Union Circulars [=IAUCs] (2005), 8566

IAUC 8566 available at Central Bureau for Astronomical Telegrams.

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See detailPeculiar Variable in Crux
Della Valle, M.; Hutsemekers, Damien ULg; Saviane, I. et al

in International Astronomical Union Circulars [=IAUCs] (2003), 8185

IAUC 8185 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2001 A2 (LINEAR)
Schuetz, O.; Jehin, Emmanuel ULg; Bonfils, X. et al

in International Astronomical Union Circulars [=IAUCs] (2001), 7656

IAUC 7656 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2001 A2 (LINEAR)
Jehin, Emmanuel ULg; Jaunsen, A.; Boehnhardt, H. et al

in International Astronomical Union Circulars [=IAUCs] (2001), 7627

IAUC 7627 available at Central Bureau for Astronomical Telegrams.

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See detailComet Austin (1989c1)
Bouchet, P.; West, R. M.; Lebertre, T. et al

in International Astronomical Union Circulars [=IAUCs] (1990), 4962

IAUC 4962 available at Central Bureau for Astronomical Telegrams.

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See detail1984 N1
Hafner, R.; Manfroid, Jean ULg

in International Astronomical Union Circulars [=IAUCs] (1984), 3968

IAUC 3968 available at Central Bureau for Astronomical Telegrams.

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See detailAppulse of SAO 186001 to Neptune
Manfroid, Jean ULg; Gutierrez, F.; Hafner, R. et al

in International Astronomical Union Circulars [=IAUCs] (1984), 3962

IAUC 3962 available at Central Bureau for Astronomical Telegrams. IAUC 3962 available at Central Bureau for Astronomical Telegrams.

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See detailComet Bradfield (1978c)
Surdej, Jean ULg; Surdej, Anna ULg; Herald, D. et al

in International Astronomical Union Circulars [=IAUCs] (1978), (3185), 1

IAUC 3185 available at Central Bureau for Astronomical Telegrams.

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See detailComet West (1978a)
West, R. M.; Pizarro, O.; Surdej, Jean ULg

in International Astronomical Union Circulars [=IAUCs] (1978), 3164

IAUC 3164 available at Central Bureau for Astronomical Telegrams.

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See detailPeriodic Comet d'Arrest (1976e)
Debehogne, H.; Surdej, Jean ULg; Surdej, Anna ULg et al

in International Astronomical Union Circulars [=IAUCs] (1976), 3010

IAUC 3010 available at Central Bureau for Astronomical Telegrams.

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See detailPeriodic Comet d'Arrest (1976e)
Jekabsons, C.; Jekabsons, P.; Candy, M. P. et al

in International Astronomical Union Circulars [=IAUCs] (1976), 2990

IAUC 2990 available at Central Bureau for Astronomical Telegrams.

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