Proposal #498
| Proposer | (43367) Michael Hartman (hartmanium@mac.com) obscode: HMJD |
|---|---|
| Assigned To | (3663) Dirk Terrell |
| Date Submitted | March 30, 2024 |
| Status | Allocated |
| Priority | Normal |
| Proposal | S Cep was AAVSO LPV of the Month for October, 2016 where its magnitude range (V and Vis) was given as 7.4 - 12.9. VSX and AAVSO Target Tool give the range as 6.3 to 12.5. The AAVSO Target Tool gives the Period = 484.4, which must be the result of averaging or taking the mean of the observations over many years. I don't exactly know where the number comes from. Here is a plot of the period over many years: <http://var.saaf.se/graph/miraocper.php?varname=S+Cep&period=486.84>. The Target Tool recommends an observation cadence of 10 days. I eyeballed the most recent Light Curve and estimated the most recent minimum occurred around January 18, 2023. Given the variability it is obviously a very rough estimation, but to try to capture the forthcoming minimum we have to start somewhere. I note that during the previous minimum the B filter values seemed a little 'sharper' than the V for the purpose of estimating the minimum. I propose that observations be made of this interesting star using the appropriate AAVSOnet telescope with B and V on the following approximate dates for a cadence of 10 days: 04-23-2024 Thanks! |
| Target | RA (H.HH) | Dec (D.DD) | Magnitude | Telescope | Observation Frequency | Expiration Date | Proprietary Term |
|---|---|---|---|---|---|---|---|
| S Cep | 21.586944 | 78.62444 | 12.5–6.3 | BSM_NH2 | 1 | June 30, 2024 | No |
Comments
- (3663) Dirk Terrell — April 3, 2024, 2:44 p.m.
The TAC accepts this proposal but would like to see BVI data taken at a 1-day cadence.
- (43367) Michael Hartman — April 3, 2024, 2:59 p.m.
To the TAC: thanks for accepting this proposal! 1-day cadence with BVI is no problem.
- (4848) George Silvis — April 7, 2024, 8:07 p.m.
Check on exposure with the first set of images
- (43367) Michael Hartman — April 17, 2024, 3:39 p.m.
OK, got it, will do!
- (43367) Michael Hartman — June 3, 2024, 6:45 p.m.
Hello George and Dirk,
I have not received the first set of images, but I am ready to check them out when I get them, to verify exposure.
Thanks!
Comments on this proposal are closed.