Rare superoutburst of 1227+14 AL Comae Berenices And 1902+11 Nova Aquilae 2001 - update and new chart [V1548 Aql]
Abstract:
The SU Ursae Majoris-type (WZ Sge subclass) dwarf nova AL Comae Berenices is undergoing a rare superoutburst, and is currently at visual magnitude 12.6, up from its minimum magnitude of around 20.
Justification:
Both visual and CCD observers are urged to search for superhumps, making observations every 5 minutes for as long as possible during the night and recording the time to four decimal places while this star is in superoutburst. The CCD observers are also urged to monitor AL Com in the (V) and (I) bands for superhumps.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| AL Com | 12.90 | UGWZ |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
V (Johnson), i (Sloan)
Comparison Stars:
No comparison stars provided
Co-Authorship
Observers are not eligible for co-authorship.
Additional Observer Input:
Not provided
Additional Submission Location:
Not provided
Forum URL
N/A
Notes:
Principal Investigator: Janet; Imported Campaign (Alert Notice #283)