HIP 33753(mag7.7) by (479)Caprera on 2018 Dec. 10
revised on Mar.08
** Prediction:
Long.: 138o 00' 00" E, Lat.: 36o 16' 33" N
PredTime: 20h 27m 52s
**** Successful observations:
Observer: Akie Hashimoto (JOIN:18579)
Place: Chichibu, Saitama, Japan
Long.: 139o 02' 00.2" E, Lat.: 35o 58' 04.7" N, Height: 355m (JGD2000=WGS84)
Method: Visual, 40cm Cass, x290
Time signal: GHS, Stop watch
Result: D 20h 27m 39.98s (P.E. 0.4s corrected)
R 20h 27m 50.57s (P.E. 0.3s corrected)
Observer: Reijin Aikawa (JOIN:18583)
Place: Sakado, Saitama, Japan
Long.: 139o 26' 50.18" E, Lat.: 35o 56' 57.13" N, Height: 21.7m (JGD2000=WGS84)
Method: Visual, 20.3cm F10 Schmidt Cass, x62
Time signal: TEL
Result: D 20h 27m 37.5s +/-0.3s (P.E. 0.6s corrected)
R 20h 27m 47.1s +/-0.3s (P.E. 0.6s corrected)
Observer: Shigeo Uchiyama (JOIN:18585,18632)
Place: Kashiwa, Chiba, Japan
Long.: 139o 58' 50.8" E, Lat.: 35o 52' 08.4" N, Height: 20m (JGD2000=WGS84)
Method: VCR, 25cm F10 Schmidt Cass, eyepiece40mm/8mm collimate ,WAT-100N
Time signal: GHS,TIVi
Result: D1 20h 27m 34.61s +/-0.01s (51% brightness remained. Possibly secondary comp.)
D2 20h 27m 34.83s +/-0.01s (Disappearance complete. Possibly primary comp.)
R1 20h 27m 42.80s +/-0.01s (42% brightness. Possibly secondary comp.)
R2 20h 27m 43.64s +/-0.01s (Reappearance complete. Possibly primary comp.)
Note: The timing was analyzed by Kazuhisa Miyashita.
Note: This event was occurred gradually.
The disappearance was made 4Fr, the reappearance was made 3Fr.
Note: Observer's own result was given,
Result: D 20h 27m 34.83s +/-0.02s
R 20h 27m 42.80s +/-0.02s
Observer: Kazumi Terakubo (JOIN:18586)
Place: Kokubunji, Tokyo, Japan
Long.: 139o 28' 17.3" E, Lat.: 35o 41' 51.4" N, Height: 78.4m (JGD2000=WGS84)
Method: Visual, 7.6cm Refractor, x27
Time signal: BPM
Result: D 20h 27m 35.0s (P.E. 0.4s corrected)
R 20h 27m 45.3s (P.E. 0.4s corrected)
Note: The both disappearance reappearance are occurred slowly (not momently).
The disappearance is slower than reappearance.
Observer: Hidehito Yamamura (JOIN:18588,18632)
Place: Hakusan, Ishikawa, Japan
Long.: 136o 29' 12.5" E, Lat.: 36o 28' 56.4" N, Height: 3m (JGD2000=WGS84)
Method: VCR, 20cm F10 Schmidt Cass, WAT-910HX (slow shutter 2Fr), Limovie
Time signal: GHS-OSD
Result: D1a 20h 28m 00.58s +/-0.01s (62% brightness remained. Possibly secondary comp.)
D1b 20h 28m 02.05s +/-0.01s (Disappearance complete. Possibly primary comp.)
R1a 20h 28m 03.92s +/-0.01s (62% brightness. Possibly primary comp.)
D2a 20h 28m 05.10s +/-0.01s (33% brightness remained. Possibly primary comp.)
D2b 20h 28m 05.34s (3% brightness remained. Possibly 3rd comp.)
D2b 20h 28m 05.63s (Disappearance complete. Possibly 4th comp.)
R2a 20h 28m 06.56s +/-0.01s (58% brightness. Possibly primary comp.)
R2b 20h 28m 07.78s +/-0.01s (Reappearance complete. Possibly secondary comp.)
(WAT-910HX delay -0.083s corrected)
Note: The decline event was occured two times.
Note: The decline event was occured stepwise.
Note: Observer's own result was given,
Result: D1 20h 28m 00.627s +/-0.033s (Half brightness remained)
D1 20h 28m 02.021s +/-0.017s (Disappearance complete)
R1 20h 28m 03.850s +/-0.017s (Half brightness remained)
D2 20h 28m 05.299s +/-0.033s (Disappearance complete)
R2 20h 28m 06.626s +/-0.033s (Half brightness)
R2 20h 28m 07.761s +/-0.033s (Reappearance complete)
(WAT-910HX delay -0.083s corrected)
Observer: Mikiya Sato (JOIN:18590,18839) revised on Mar.08
Place: Fuchu, Tokyo, Japan
Long.: 139o 28' 34.4" E, Lat.: 35o 40' 54.5" N, Height: 60m (JGD2000=WGS84)
Method: Movie by Camera, f300mm F2.8 Camera lens
Time signal: BPM
Result: D1 20h 27m 33.67s +/-0.13s
D2 20h 27m 34.35s +/-0.05s
R 20h 27m 44.65s +/-0.05s
Note: Disappearance occured stepwise.
Note: The timing is analyzed by Kazuhisa Miyashita.
Observer: Toshio Hirose (JOIN:18591)
Place: Ota, Tokyo, Japan
Long.: 139o 41' 20.3" E, Lat.: 35o 34' 12.7" N, Height: 11m (JGD2000=WGS84)
Method: VCR, 6.5cm F7.7 Refractor, WAT-120N+(slow shutter 4Fr), Limovie
Time signal: BPM
Result: D1a 20h 27m 31.6s +/-0.4s (Possibly Secondary comp.)
D1b 20h 27m 32.4s +/-0.4s (Possibly Primary comp.)
R 20h 27m 42.1s +/-0.4s
Observer: Kunihiro Shima (JOIN:18613,18632)
Place: Fujimi, Nagano, Japan
Long.: 138o 18' 16" E, Lat.: 35o 53' 36" N, Height: 139m (JGD2000=WGS84)
Method: Movie by Camera, 45cm F12 Cass, F4.6 Reducer, Nikon D3100, Limovie
Time signal: NTP
Result: D1a 20h 27m 43.60s +/-0.01s (42% brightness remained. Possibly secondary comp.)
D2d 20h 27m 44.92s +/-0.01s (Disappearance complete. Possibly primary comp.)
R1a 20h 27m 51.46s +/-0.01s (29% brightness. Possibly primary comp.)
R2b 20h 27m 51.73s +/-0.01s (Reappearance complete. Possibly secondary comp.)
Note: The timing is analyzed by Kazuhisa Miyashita.
Note: The decline event was occured stepwise.
** Negative observations:
Observer: Toshihiro Horaguchi (JOIN:18578)
Place: National Museum of Nature and Science, Tsukuba, Ibaraki, Japan
Long.: 140o 06' 40.7" E, Lat.: 36o 06' 05.1" N, Height: 40m (JGD2000=WGS84)
Method: VCR, 50cm F12 Cass, WAT-100N
Time signal: GHS-OSD
Observer: Satoshi Watanabe (JOIN:18587)
Place: Oyama, Tochigi, Japan
Long.: 139o 47' 55.64" E, Lat.: 36o 18' 23.64" N, Height: 43.0m (JGD2000=WGS84)
Method1: Camera, 30cm F7.2 Cass
Method2: Visual, 6cm Refractor, x100
Time signal: Wave clock
Note: Reported by Akie Hashimoto
Observer: Hayato Watanabe (JOIN:18600)
Place: Inabe, Mie, Japan
Long.: 136o 33' 33.9" E, Lat.: 35o 07' 10.2" N, Height: 92m (JGD2000=WGS84)
Method: VCR, 13cm F7.7 Refractor, WAT-120N(slow shutter 1Fr), Limovie
Time signal: GHS-OSD