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AAVSO International Database

Special Notice #69: Update on AN 358 Mira monitoring campaign

September 20, 2007: As announced in AAVSO Alert Notice 358, we are approaching the scheduled HST observing time for omi Cet (AAVSO 0214-03). Observations are currently planned for 2007 September 23, 19:00-23:30 UT. Dr. Margarita Karovska (CfA) and collaborators are using HST to observe Mira AB and study the behavior of the mass flow and mass transfer within this system. Optical observations -- visual and instrumental -- are requested for this campaign.

Special Notice #76: Support for HST observations of SDSS074545, update

October 29, 2007: We have been informed by Paula Szkody that HST observations of SDSS074545 have been tentatively scheduled for the night of 2007 October 31/Nov 01 UT (approximate JD 2454405.56). Observations are pending ground-based confirmation that this cataclysmic variable is not in outburst and is thus faint enough to safely observe with HST. This decision will be made on the afternoon of Wednesday, 2007 October 31 UT, and so observations are critically needed during the night of 2007 October 30/31 UT (JD 2454404.5).

Special Notice #79: Update of Alert Notice 361: HST Observations of SDSS091908

November 12, 2007: This is an update to the Request for Observations given in Alert Notice 361, on upcoming Hubble Space Telescope observations of SDSS091908, a cataclysmic variable with a pulsating white dwarf primary.

Special Notice #80: Nova Puppis 2007 = V597 Pup (AAVSO 0812-33)

November 15, 2007: Further to AAVSO Alert Notice 362, the object designated Nova Puppis 2007 (Pereira, IAU Circular 8895) has been assigned the variable star name "V597 Pup" according to N.N. Samus, Institute of Astronomy, Russian Academy of Sciences (Samus et al., IAU Circular 8896). Please use "V597 Pup" and/or the AAVSO designation "0812-33" when reporting observations to the AAVSO.

AAVSO Special Notice #85: Possible Nova in Vul [V459 Vul]

December 26, 2007: The CBET Unconfirmed Observation page at http://www.cfa.harvard.edu/iau/unconf/cbat_unconf.html

has listed a new object in Vulpeculae [V459 Vul] at

19:48:08.8  +21:15:23 J2000

The discovery magnitude on December 25.354 was 8.7; the discoverer is not listed.  No minor planets are visible in this field according to the minor-planet checker.

Alert Notice 584: Monitoring of PDS 110 requested to cover upcoming eclipse by exoplanet

Note: This campaign is officially over, but the astronomers would appreciate it very much if observers could make an occasional observation of PDS 110.  EOW March 29, 2018

Note: This Alert Notice was edited to add the magnitude range of PDS 110. EOW

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