2022年 星食観測整約結果


    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