Proposal #225
| Proposer | (34732) Filipp Romanov (filipp.romanov.27.04.1997@gmail.com) obscode: RFDA |
|---|---|
| Assigned To | (3663) Dirk Terrell |
| Date Submitted | Sept. 22, 2021 |
| Status | Allocated |
| Priority | Normal |
| Proposal | LL And in rare outburst now (about 14 mag). The amplitude of the superhumps is increasing: now it is about 0.25 mag. Time-resolved photometry (best with exposures of 60 seconds) for next weeks required: with V filter or unfiltered with a duration of 5 or more hours every night. About the uniqueness of this system - from the paper "1993 Superoutburst of LL Andromedae" https://ui.adsabs.harvard.edu/abs/2004PASJ...56S.135K : "LL And may be an object filling the gap in the evolutionary track, which has recently been proposed to explain the unusual ultracompact binaries with an evolved mass donor". I will upload the data to the AAVSO International Database and will send to VSNET (information is available there: "More continuous follow-up observations are needed to explore its nature!"). With best regards, Filipp. |
| Target | RA (H.HH) | Dec (D.DD) | Magnitude | Telescope | Observation Frequency | Expiration Date | Proprietary Term |
|---|---|---|---|---|---|---|---|
| LL AND | 0.697631 | 26.62253 | 20.0–12.6 | TMO61 | daily | March 23, 2022 | No |
Comments
- (34732) Filipp Romanov — Sept. 22, 2021, 8:37 p.m.
There was some error in converting coordinates from J2000 to J2000d. Correct position: 00 41 51.47 +26 37 21.1 (10.46446 +26.62253) - from the VSX.
- (4726) Kenneth Menzies — Sept. 24, 2021, 6:51 p.m.
Filipp:
Committed to large scope (TMO61). In SG filter at 60 second exposures for 6 hours. Tell me how it goes?
Ken
- (34732) Filipp Romanov — Sept. 24, 2021, 7:07 p.m.
Thank you, Kenneth, these parameters should be fine.
Comments on this proposal are closed.