July 25, 2019
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observing Reports: https://www.aavso.org/ss-cyg-tess-2019
- Cataclysmic Variables: ss-cyg-tess-2019-01
Dr. Stella Kafka (AAVSO) has requested multicolor photometry and spectra of the dwarf nova SS Cyg to complement monitoring by the TESS satellite taking place now to mid-September.
Note: Although this outburst of GK Per has been over for some time, ongoing good coverage is requested. - Elizabeth O. Waagen, 13 April 2020
August 24, 2018: The old nova GK Per (N Per 1901), which has dwarf nova (minor) outbursts, appears to be going into outburst, according to observations reported to the AAVSO. Recent observations include:
Note: V392 Per has not returned to its pre-outburst magnitude. Please continue multicolor observations at least until it fades to V~16.5. - Elizabeth O. Waagen, 7 April 2020
April 30, 2018:
Event: Nova in Perseus - V392 Per = TCP J04432130+4721280
Discovered by: Yuji Nakamura (Kameyama, Mie, Japan; via CBET 4515)
Discovery magnitude: unfiltered CCD magnitude 6.2 (using a 135mm f4.0 lens; via CBET 4515)
March 16, 2018: Dr. Jennifer Sokoloski (Columbia University) and colleagues (led by Dr. Koji Mukai, NASA Goddard Space Flight Center) have requested AAVSO assistance in observing the nova/dwarf nova V1017 Sgr in preparation for an XMM-Newton observation scheduled for 2018 March 23 or 24.
Confirmation that the system is not in dwarf-nova outburst as of March 23 is needed so that the XMM observation may take place.
September 12, 2007: Due to a typographical error, the lead sentence of AAVSO Special Notice #66 was garbled. My sincere apologies! Here is the correct version:
According to IAU Circular No. 8868 (Daniel E. W. Green, editor), N. N. Samus, Institute of Astronomy, Moscow, reports that the dwarf nova cataclysmic variable 2328+38 HS 2331+3905 has been assigned the official name V455 And. The AAVSO validation file has been changed to reflect this new name. Please use V455 AND when reporting observations.
September 12, 2007: According to IAU Circular 8868 (Daniel E. W. Green, editor), N. N. Samus, Institute of Astronomy, Moscow, reports that the dwarf nova cataclysmic variable 2328+38 HS 2331+3905 is now V455 And, and HS 2331+3905 has been assigned the official name V455 And. The AAVSO validation file has been changed to reflect this new name. Please use V455 AND when reporting observations.
V455 AND is located at RA 23:34:01.55, Dec +39:21:42.9 (J2000)
July 22, 2008
August 4, 2008
August 19, 2008
