File name : Imai_2022.txt Reduction date : 2023年10月5日 Ephemeris : DE440 (1550/2650), VSOP87A Limb basis : LRO Lunar Orbiter Laser Altimeter [LOLA] O-C basis : limb correction applied Telescopes: Aperture Longitude Latitude Alt # cm o ' " o ' " m A 25 +138 50 26.4 +37 26 43.6 31 ref Tel Observer Star No. y m d h m s PhGrMrCeDb O-C O-C mas sec 001 A E. Imai X 43849 2022 9 5 10 26 21.28 DD G 1 -47 0.13 002 A E. Imai X 155707 2022 9 5 10 31 16.43 DD G 1 -40 0.10 003 A E. Imai S 186723 2022 9 5 10 38 15.15 DD G 1 -27 0.09 004 A E. Imai S 186725 2022 9 5 10 41 22.51 DD G 1 +3 -0.01 005 A E. Imai S 184882 2022 10 1 9 3 0.31 DD G 1 +19 -0.05 006 A E. Imai X 41759 2022 10 1 9 12 7.63 DD G 1 +15 -0.05 007 A E. Imai S 184923 2022 10 1 10 16 0.29 DD G 1 +78 -0.22 008 A E. Imai S 188731 2022 10 31 9 38 34.95 DD G 1 -31 0.08 009 A E. Imai S 188750 2022 10 31 10 11 35.23 DD G 1 -16 0.04 010 A E. Imai S 188764 2022 10 31 10 53 48.37 DD G 1 +30 -0.08 011 A E. Imai S 188779 2022 10 31 11 16 41.63 DD G 1 -23 0.06 012 A E. Imai R 2914 2022 10 31 11 29 57.48 DD G 1 -24 0.08 013 A E. Imai S 189498 2022 11 28 8 33 12.66 DD G 1 -11 0.04 014 A E. Imai S 189526 2022 11 28 8 42 12.10 DD G 1 +115 -0.25 015 A E. Imai S 189530 2022 11 28 8 59 11.92 DD G 1 -61 0.14 016 A E. Imai S 189535 2022 11 28 9 4 14.53 DD G 1 -35 0.08 017 A E. Imai S 189548 2022 11 28 9 38 24.71 DD G 1 -52 0.17 018 A E. Imai S 189555 2022 11 28 9 51 47.74 DD G 1 -20 0.08 Star positions not from Gaia or Hipparcos2 have a '§' after the O-C Mean residual of 18 events involving single stars: -7 mas ±44 mas Mean clock correction from 18 event times: -0.02 secs ±0.11 secs Mean residuals are exclusive of: events after 1900 with a residual > ±0.5" Bright limb events, events that are not 'Certain', and Start, End and Miss events events involving Planets or Asteroids Mean clock correction additionally limited to events with a radial motion >0.15"/sec Explanation of columns 'PhGrMrCeDb' Ph - Phase of the event. 1st character D = disappear, R = reappear, B = blink, F = flash. plus for grazes, M = Miss, S = Start, E = End 2nd character D = dark limb, B = bright limb, U = in umbra of lunar eclipse Gr - G if the event is during a graze Mr - Method of timing and recording. Main types are: G = video with time insertion, V = video with other time linking S = visual using a stopwatch, T = visual using a tape recorder, E = eye/ear Ce - Certainty. 1 = certain, 2 = may be spurious, 3 = most likely spurious Db - Double star indication - West, East, North, South, Brighter, Fainter