|Proposer||(34732) Filipp Romanov (email@example.com) obscode: RFDA|
|Assigned To||(3663) Dirk Terrell|
|Date Submitted||Sept. 22, 2021|
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,
|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|
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.
Committed to large scope (TMO61). In SG filter at 60 second exposures for 6 hours. Tell me how it goes?
Thank you, Kenneth, these parameters should be fine.
Comments on this proposal are closed.