Date: Sun, 6 Apr 2003 01:13:57 +0900 (JST) From: Mitsuru SOMA Subject: Observations of the Interamnia occultation The observational data for the occultation by Interamnia obtained in Japan on 2003 Mar 23rd are given below. These are mainly compiled by HAYAMIZU Tsutomu with some corrections made by myself. The message number of the Japanese Occultation Information Network (JOIN) is given on the first line for each station. "Pass" means that no occultation occurred at the station. Mitsuru Soma ------------------------------------------------------------------- Observations of the occultation by (704) Interamnia obtained in Japan on 2003 Mar 23 Updated 2003 Apr 05 Compiled from [JOIN:5136] through [JOIN:5262] Names are given in the family name - first name order [Japanese custom, opposite western custom]. Geodetic coordinates are on JGD2000 (= WGS84) unless otherwise noted. Heights are measured from the mean-sea level. Times are in UTC. ---------------------------------------------------------------- Miyamoto Atsushi et al. Pass[JOIN:5189] Place: Adachi, Kawasaki Town, Miyagi Pref. E 140d39'28" N 38d13'10" H305m Observers: Miyamoto Atsushi, Tatsumi Naoto, Sakaniwa Tomoko, Magome Nobuhiro Celestron 20.3cm F10 Schmidt Cass, 92x Mizar 6cm F15 Refractor, 41x Takahashi 20.0cm F6 Newtonian, 67x Takahashi 7.6cm F8 Refractor, 60x GHS ------------ Ikeshita Ryo et al. Pass[JOIN:5189] Reported by Miyamoto Atsushi Place: Kawauchi, Aoba Ward, Sendai City, Miyagi Pref. E 140d51'13" N 38d15'39" H50m Observers: Ikeshita Ryo, Ino Tomohiro, Fujita Yaeko, Nakamura Asuka Vixen 8cm F11 Refractor, 46x Mead 20.3cm F10 Schmidt Cass, 80x Vixen 8cm F8 Refractor, 36x Takahashi 10.2cm F8 Refractor, 37x BPM, Visual ---------------------------------------- Ootsuki Isao Success[JOIN:5139,5262] Place: Marumori Town, Miyagi Pref. E 140d40'47" N 37d53'58" H190m D begins 09h42m30.53s +/- 0.2s D ends 09h42m31.40s +/- 0.07s R begins 09h42m32.43s +/- 0.07s R ends 09h42m32.73s +/- 0.1s 31cm F5.8 Newtonian, GHS, TEL, VTR Timing data measured by Hayamizu Tsutomu ---------------------------------------- Hoshino-mura Observatory Success[JOIN:5155,5172,5262] Place: Takine Town, Fukushima Pref. E 140d40'34.0" N 37d20'30.0" H640m D begins 09h42m05.167s +/-0.067s D ends 09h42m05.533s +/-0.033s R begins 09h42m59.467s +/-0.033s R ends 09h42m59.767s +/-0.067s Watanabe Hiroyuki 65cm F12 Cass, I.I., TEL, DV, VTR Ohno Hiroaki 15cm F12 Refractor, 100x, Visual Muramatsu Toshikazu 10cm F6.7 Refractor, 100x, Visual Timing data measured by Hayamizu Tsutomu ---------------------------------------- Tonomura Yasuhiro Pass[JOIN:5141,5185,5231] Place: Tomiya Town, Miyagi Pref. E 140d52'16.2" N 38d22'58.1" H 80m 7.6cm Refractor, 24x ,GHS, Visual ---------------------------------------- Oribe Takaaki, Miyamoto Atsushi (Saji-Astropark) Pass[JOIN:5155] Place: Saji Village, Tottori Pref. E 134d07'10.37" N 35d20'31.48" H397m 103cm F4.2 Cass, VTR ---------------------------------------- Yaeza Akira Success[JOIN:5146] Place: Moriyama-cho, Hitachi City, Ibaraki Pref. E 140d36'11" N 36d31'30" H 220m D 09h42m00.8s P.E. corrected R 09h43m13.3s P.E. corrected Celestron C8, TEL, Visual ---------------------------------------- Takashima Hideo, Ohba Fujio Success[JOIN:5148,5262] Place: Kashiwa City, Chiba Pref. E 139d57'10.9" N 35d50'48.3" H39.3m D begins 09h41m51.80s +/-0.07s D ends 09h41m52.04s +/-0.03s R1 begins 09h42m55.93s +/-0.03s R1 ends 09h42m56.10s +/-0.03s R2 begins 09h43m00.94s +/-0.03s R2 ends 09h43m01.11s +/-0.07s (R1 and R2 are stepwise events; the brightness of the star was about 8th mag between R1 and R2) 21cm F12 Newtonian, WAT-100N, GHS, TIVi Timing data measured by the observers and confirmed by Hayamizu Tsutomu ---------------------------------------- Usuki Ken-ichi Success[JOIN:5151] Place: Niitsuru Village, Fukushima Pref. E 139d50'03.2" N 37d31'39.2" H180m D 09h41m50s R Lost 30cm Schmidt Cass, Vixen B05-3M, TEL, Visual ---------------------------------------- Yokokawa Mikio Pass[JOIN:5152,5201,5260] Place: Motoyoshi Town, Miyagi Pref. E 141d33'28.6" N 38d48'56.3" H35m 28cm F10 SchmidtCass, Visual ---------------------------------------- Itou Yoshiharu Pass[JOIN:5153] Place: Aoba Ward, Sendai City, Miyagi Pref. E 140d52'34" N 38d16'36" H55m Photoelectric ---------------------------------------- Kouda Masaki Pass[JOIN:5154] Place: Kamikita Town, Aomori Pref. E 141d16'05" N 40d43'56" H 5m Visual ---------------------------------------- Hamanowa Obs Success[JOIN:5157,5262] Place: Koriyama City, Fukushima Pref. E 140d 25' 48.41", N 37d 27' 37.72" H260m D begins 09h42m02.107s +/-0.1s D ends 09h42m02.373s +/-0.1s R begins 09h42m52.790s +/-0.07s R ends 09h42m53.057s +/-0.1s 40cm F4.5 Newtonian, WAT-100N, BPM, VTR Observers: Hamanowa Hiromi, Hosoi Katsumasa, Hamanowa Hiroko Timing data measured by Hayamizu Tsutomu ---------------------------------------- Ida Miyoshi Success[JOIN:5158] Place: Muraoka Town, Fukui Pref. E 136d16'43.8" N 36d08'29.0" H 13m D 09h40m45.9s +/-0.5s P.E. corrected R 09h41m49.0s +/-0.3s P.E. corrected, gradual 20cm F10 Schmidt Cass, GHS, Tape-recorder, Visual ---------------------------------------- Sato Makoto Success[JOIN:5160,5227] Reported by Fujita Mitsuhiro Place: Haranomachi City, Fukushima Pref. E 140d54'44.00" N 37d39'54.15" H55m D begins 09h42m19.4s D ends 09h42m19.6s R begins 09h42m50.2s R ends 09h42m50.3s 300mm F2.8 Camera Lens, WAT-100N, GHS, TIVi, VTR ---------------------------------------- Fujita Mitsuhiro Pass[JOIN:5197,5227] Place: Shiroishi City, Miyagi Pref. E 140d38'15" N 38d02'16" H40m 13cm F5.5, 36x, BPM, Visual ---------------------------------------- Kita Nobusuke Success[JOIN:5161,5194] Reported by Ohba Fujio Place: Kashiwa City, Chiba Pref. E 140d00'55" N 35d53'49" H10m D 09h41m52.5s P.E. uncorrected R 09h42m57.8s P.E. uncorrected 16cm F8 Newtonianian, Short-wave (WWVH?), Visual ---------------------------------------- Kitazaki Katsuhiko Success[JOIN:5164] Place: Musashino City, Tokyo E 139d33'41.2" N 35d42'36.9" H66m D 09h41m47.5s +/-0.2s R 09h42m53.2s +/-0.4s 40cm F10.1 Cass, WAT-100N, GHS, TIVi, VTR ---------------------------------------- Suzuki Satoshi Success[JOIN:5166] Place: Yokohama City, Kanagawa Pref. E 139d32'04.6" N 35d22'44.2" H30m D 09h41m57.71s -1Fr/+5Fr R 09h42m46.54s +/-1Fr 10cm (150mm F1.8 TV Canon Zoom), WAT-100N , GPS, TIVi, VTR ---------------------------------------- Sugai Hideo Pass[JOIN:5168,5190,5193] Reported by Oba Yoshio Place: Zao-hango, Yamagata City, Yamagata Pref. E 140d19'16.0" N 38d11'16.1" H185m 10cm F6.4 Refractor, 20x, TEL, Tape Recorder, Visual ---------------------------------------- Nihei Hajime Pass[JOIN:5204] Reported by Hirose Toshio Place: Nanyo City, Yamagata Pref. E 140d08'20" N 38d04'52" H295m 31cm F5.8 Newtonian, WAT-100N, TEL, VTR ---------------------------------------- Sugiyama Yukihiro Success[JOIN:5169] Place: Hiratsuka City, Kanagawa Pref. E 139d18'52" N 35d22'12" H10m D 09h41m55.4s +/-0.3s R1 09h42m33.4s +/-0.3s mag8.5 R2 09h42m42.1s +/-0.3s complete 25cm Newtonian, 50x, TEL, Visual ---------------------------------------- Ishida Masayuki Success[JOIN:5170] Place: Kanazu Town, Fukui Pref. E 136d17'40.84" N 36d14'06.13" H76m D begins 09h40m43.98s D ends 09h40m44.18s R begins 09h41m49.61s R ends 09h41m49.85s 30cm F10 Schmidt Cass, WAT-100N, GHS, TIVi, VTR ---------------------------------------- Hirose Yoji Success[JOIN:5171,5216] Reported by Hirose Toshio Place: Chigasaki City, Kanagawa Pref. E 139d25'56" N 35d22'03" H40m D begins 09h41m56.5s decline to 8mag D ends 09h41m59.6s disappear R begins 09h42m34.9s appear to 8mag R ends 09h42m43.6s complete 25cmF6.3 Schmidt Cass, WAT-100N, TimeGeneraror, TEL, VTR ---------------------------------------- Nakanishi Akio Success[JOIN:5181,5262] Place: Itabashi Ward, Tokyo E 139d41'17.94" N 35d46'48.54" H 5m D 09h41m48.352s +/-0.033s R 09h42m55.421s +/-0.033s 35cm Schmidt Cass(CelestronC8), GPS, Time Imposer, VTR Timing data measured by the observer and confirmed by Hayamizu Tsutomu ---------------------------------------- Tsuchikawa Akira (Mantenboshi) Success[JOIN:5177] Place: Yanagida Village, Ishikawa Pref. E 137d 08'13.4" N 37d20'04.1" H200m D begins 09h40m52.73s D ends 09h40m52.93s R begins 09h42m03.33s R ends 09h42m03.53s 60cm, I.I., DV, TEL, VTR ---------------------------------------- Sugawara Hitoshi Doubt[JOIN:5178,5226] Place: Ichinoseki City, Iwate Pref. E 141d07'25.0" N 38d55'57.3" H33m 1D 09h42m25.1s 1R 09h42m27.1s 2D 09h42m33.5s 2R 09h42m35.3s 7*50 Bino, GHS, Visual Judging from the other observers' results these should not be due to the asteroid itself. ---------------- Satou Toshirou Pass[JOIN:5178,5226] Place: Ichinoseki City, Iwate Pref. E 141d07'25.0" N 38d55'57.3" H33m C8 Schmidt Cass, 80x, GHS, Visual Obs. began at 09h42m47s, so Satou was not making the observation during the 2 phenomena observed by Sugawara. ---------------------------------------- Sasaki Kazuo Pass[JOIN:5178,5226] Reported by Satou Toshirou Place: Furukawa City, Miyagi Pref. E 140d57'28" N 38d33'28" H30m 40cm F15 Cass, 100x, Visual ---------------------------------------- Konno Eitoshi Pass[JOIN:5178,5226] Reported by Satou Toshirou Place: Hanaizumi Town, Iwate Pref. E 141d10'49.4" N 38d50'14.2" H24m 40x10 Bino, Visual ---------------------------------------- Koishikawa Masahiro Pass[JOIN:5199] Place: Sendai City, Miyagi Pref. E 140d45'54" N 38d16'19" H100m 26cm VTR ---------------------------------------- Momose Masahiko Success[JOIN:5199] Place: Shiojiri City, Nagano Pref. E 137d56'27" N 36d08'07" H680m Datum unknown (TD or WGS84) 8.5cm Refractor, 25x, Radio-clock, Stopwatch, Visual ---------------------------------------- Yoshida Hidetoshi Pass[JOIN:5202] Place: Abashiri City, Hokkaido E 144d15'28.1" N 44d01'21.9" H 9m 8x11 Bino, TEL, Visual ---------------------------------------- Sato Tsutomu Pass[JOIN:5223,5230] Reported by Ootsuki Isao Place: Marumori Town, Miyagi Pref. E 140d45'45" N 37d54'53" H18m 35cm F5.9 Newtonian, Watec NP1000, TEL, VTR ---------------------------------------- Okamoto Michiko Pass[JOIN:5227] Reported by Fujita Mitsuhiro Place: Rifu Town, Miyagi Pref. E 140d58'14.6" N 38d20'57.7" H110m 20cm F6.1 Newtonian, 49x, TEL, Tape Recorder, Visual ---------------------------------------- Sakaki Chiyoaki Pass[JOIN:5227] Reported by Fujita Mitsuhiro Place: Izumi Ward, Sendai City, Miyagi Pref. E 140d46'59" N 38d19'42" H120m 10cm F7.2 Newtonian, 36x, TEL, Tape Recorder, Visual ---------------------------------------- Nagai Hideo Pass[JOIN:5227] Reported by Fujita Mitsuhiro Place: Izumi Ward, Sendai City, Miyagi Pref. E 140d51'26" N 38d17'45" H70m 8cm F8 Refractor, 29x, EL, Tape Recorder, Visual ---------------------------------------- Watanabe Akira Pass[JOIN:5227] Reported by Fujita Mitsuhiro Place: Taihaku Ward, Sendai City, Miyagi Pref. E 140d48'58" N 38d13'59" H105m 30cm F6 Newtonian, Vixen B05-3M, GHS, VTR ---------------------------------------- Sato Hikaru Success[JOIN:5247,5252] Place: Fukushima City, Fukushima Pref. E 140d29'25.3" N 37d44'35.9" H 90m D 09h42m12.5s R 09h42m42.0s 8cmF11.4, 36x, Radio clock, Cell phone ---------------------------------------- Kaneko Sakae Success[JOIN:5236] Reported by Hirose Toshio Place: Sakura City, Chiba Pref. E 140d11'27" N 35d44'02" H15m D 09h41m58.0s R 09h43m00.2s 15cm Newtonian, Keytapping, Visual ---------------------------------------- - and below is the "Isao Sato embargoed" observation: The observation is given below. Although the observer does not allow us to publicize his data for now, he does want us to include his data in our analysis. Best regards, Mitsuru Soma ----- Tsukuba City, Ibaraki Pref. Observer: UEHARA Sadaharu 140o07'04."2E, 36o05'11."2N, +30mH (JGD2000 = WGS84) D begins 09h41m50.9s +/-0.2s D ends 09h41m51.4s +/-0.1s R1 09h43m00.6s +/-0.3s about 8th mag, maybe companion R2 begins 09h43m04.6s +/-0.2s primary R2 ends 09h43m05.0s +/-0.1s (R1 was observed visually, not recorded by video) 20cm Reflector, 40x, Visual + Video, Radioclock, Telephone time signal _______________________________________________________________