[vsnet-obs 27300] HadV48 tentative period

[Chris Lloyd <cl@ast.star.rl.ac.uk>]

Although a bit slow off the mark I confirm the period of 2.99705 days
suggested by Taichi [vsnet-obs 27258] as the most likely period for HadV48
on the basis of the observations by Haseda [vsnet-alert 4611] [vsnet-obs
27244] and Takamizawa [vsnet-obs 27257]. The analysis also shows two other
possible periods, one near 6 days which is physically impossible, and a
second at 1.497 days, ie. half the suggested period. Although rather
unlikely this period is not excluded by the present data and an ephemeris
for it is given below, with minima in the 3 day period appearing at even
cycle numbers. 

Chris Lloyd

  Ephemeris for HadV48       To=2449972.9258 +   1.49716000xE
          JD       Year  Mo   Date     UT   Min Cycle
     2451655.7336  2000   4  21.2336   5:36  I   1123
     2451657.2308  2000   4  22.7308  17:32  I   1124 3 day min
     2451658.7280  2000   4  24.2280   5:28  I   1125
     2451660.2251  2000   4  25.7251  17:24  I   1126 3 day min
     2451661.7223  2000   4  27.2223   5:20  I   1127
     2451663.2194  2000   4  28.7194  17:15  I   1128 3 day min
     2451664.7166  2000   4  30.2166   5:11  I   1129

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