Proposal #184
| Proposer | (34732) Filipp Romanov (filipp.romanov.27.04.1997@gmail.com) obscode: RFDA |
|---|---|
| Assigned To | (3663) Dirk Terrell |
| Date Submitted | Jan. 21, 2021 |
| Status | Allocated |
| Priority | Normal |
| Proposal | Hello! I talked about my discovery of variable star Romanov V20 during the 109th AAVSO Annual Meeting, in my presentation "Discoveries of Variable Stars by Amateur Astronomers Using Data Mining: On the Example of Eclipsing Binary Romanov V20". You can watch a video about this at the link: https://www.youtube.com/watch?v=zuyFpCCOOxI For the second time I tried to take a minimum of the primary eclipse from the remote telescope T32 iTelescope, but circumstances again allowed me to take only the end of the eclipse. There are good observations in g' band in the ASAS-SN database, but observations in Johnson V a little: I cannot understand even the minimum magnitude: 16.4 or 16.5 V. It is necessary to remove eclipses in the filters V, B, r', u' and i' (to understand the parameters of the components) - for end of research of this variable. I got referee report from the JAAVSO about my paper about this variable: until I correct it and send it again, I can still get these magnitudes with AAVSOnet. Ephemeris avialable at the AAVSO VSX page https://www.aavso.org/vsx/index.php?view=detail.top&oid=625740 , but the data is outdated and the eclipse occurs about 10-15 minutes earlier than the calculated one, the correct data for calculations: period 1.267496 d., epoch: 2457934.052 HJD. With best regards, Filipp Romanov. |
| Target | RA (H.HH) | Dec (D.DD) | Magnitude | Telescope | Observation Frequency | Expiration Date | Proprietary Term |
|---|---|---|---|---|---|---|---|
| Romanov V20 | 11.356856 | -52.36214 | 16.5–13.45 | OC61 | — | July 31, 2021 | No |
Comments
- (34732) Filipp Romanov — Jan. 21, 2021, 1:46 p.m.
Sorry, not remove - remote: capture/shoot primary eclipses.
- (3663) Dirk Terrell — Jan. 21, 2021, 10:32 p.m.
From Sebastian (the list HJDs are mid-eclipse times)
Different parts of the eclipse are visible two nights every week, an ephemeris with the VSX elements (slightly different than his new determination) would be useful to plan the observations:
HJD Beginning Mideclipse End
2459238.312 23 Jan 2021 16:53 23 Jan 2021 19:28 23 Jan 2021 22:03
2459239.579 24 Jan 2021 23:18 25 Jan 2021 01:53 25 Jan 2021 04:29
2459240.847 26 Jan 2021 05:44 26 Jan 2021 08:19 26 Jan 2021 10:54
2459242.114 27 Jan 2021 12:09 27 Jan 2021 14:44 27 Jan 2021 17:19
2459243.382 28 Jan 2021 18:34 28 Jan 2021 21:09 28 Jan 2021 23:44
2459244.649 30 Jan 2021 00:59 30 Jan 2021 03:34 30 Jan 2021 06:09
2459245.917 31 Jan 2021 07:24 31 Jan 2021 10:00 31 Jan 2021 12:35
2459247.184 01 Feb 2021 13:50 01 Feb 2021 16:25 01 Feb 2021 19:00
2459248.452 02 Feb 2021 20:15 02 Feb 2021 22:50 03 Feb 2021 01:25
2459249.719 04 Feb 2021 02:40 04 Feb 2021 05:15 04 Feb 2021 07:50
2459250.987 05 Feb 2021 09:05 05 Feb 2021 11:40 05 Feb 2021 14:15
2459252.254 06 Feb 2021 15:30 06 Feb 2021 18:06 06 Feb 2021 20:41
2459253.522 07 Feb 2021 21:56 08 Feb 2021 00:31 08 Feb 2021 03:06
2459254.789 09 Feb 2021 04:21 09 Feb 2021 06:56 09 Feb 2021 09:31
2459256.057 10 Feb 2021 10:46 10 Feb 2021 13:21 10 Feb 2021 15:56
2459257.324 11 Feb 2021 17:11 11 Feb 2021 19:46 11 Feb 2021 22:22
2459258.592 12 Feb 2021 23:36 13 Feb 2021 02:12 13 Feb 2021 04:47
2459259.859 14 Feb 2021 06:02 14 Feb 2021 08:37 14 Feb 2021 11:12
2459261.127 15 Feb 2021 12:27 15 Feb 2021 15:02 15 Feb 2021 17:37
2459262.394 16 Feb 2021 18:52 16 Feb 2021 21:27 17 Feb 2021 00:02- (34732) Filipp Romanov — Jan. 23, 2021, 8:34 p.m.
Thank you for approving my proposal: I will clarify that not Sloan u' but Sloan z', respectively V,B,r',i',z'. And I also did not provide information: according to my new calculations, eclipse duration is not 17% (5.17 hours) but 15% (4.56 hours).
- (4726) Kenneth Menzies — Jan. 30, 2021, 8:02 p.m.
Philipp:
I snet you an email with a spreadsheet to fill in.
- (4726) Kenneth Menzies — Jan. 30, 2021, 8:03 p.m.
How many filters do you really need?
How many eclipses do you need?
Ken
- (4726) Kenneth Menzies — Feb. 1, 2021, 6:47 p.m.
Committed to OC61. Multiple eclipses scheduled per above in BVRI.
- (34732) Filipp Romanov — Feb. 2, 2021, 10:41 a.m.
Thanks! As I understand it, if the eclipse will be captured with OC61, then filters will be Johnson B, V and Sloan r and i? It turns out that each eclipse will be shot in one filter - a total of 4 times?
- (34732) Filipp Romanov — May 3, 2021, 2:16 p.m.
Thank you, I got the images I needed and I made photometric measurements.
Comments on this proposal are closed.