JD Calendar for 2021
The Julian Day Calendar for 2021 is now available for viewing or download here:
front page news
All nodes that have this tag will posted to the home page "Recent Activity" block
JAAVSO Volume 48 Number 2, 2020 is published
http://www.aavso.org/apps/jaavso/volumes/
The printed version of this issue will be available soon. Please watch for the announcement on our main web page.
The Journal of the American Association of Variable Star Observers
Volume 48, Number 2, 2020
Articles in This Issue
2021 RR Lyrae Ephemeris
The 2021 RR Lyrae Ephemeris is now available.
Many thanks to its creator, Gerry Samolyk!
2021 Eclipsing Binary Ephemeris
The 2021 Eclipsing Binary Ephemeris is now available.
Thank you Gerry Samolyk for all the good work you put into this!
Alert Notice 727: Chandra observations taking place for RW Aur
Please continue observing RW Aur until further notice. - Elizabeth O. Waagen, 28 October, 2021
December 6, 2020
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns & Observation Reports: https://www.aavso.org/rw-aur-monitoring
Alert Notice 726: Nova in Perseus: N Per 2020 = TCP J04291884+4354232 = TCP J04291888+4354233 [V1112 Per]
November 27, 2020
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/possible-nova-mag-10-perseus-0
- Novae: https://www.aavso.org/possible-nova-mag-10-perseus
Alert Notice 725: Campaign on Northern T Tau Stars
Note: V510 Tau, one of the stars in this campaign, will be re-observed by HST on 2021 February 12-13 UT. Please continue your observations (highest priority are V and B, then Rc and U), obtaining a few observations each night from now through February 15. - Elizabeth O. Waagen, 1 February 2021
November 12, 2020
Alert Notice 724: VY Aqr observing campaign
Note: Please continue to observe VY Aqr until further notice. - Elizabeth O. Waagen, April 4, 2022
Please continue to observe VY Aqr until solar conjunction makes doing so impossible, and pick up again as soon after conjunction as possible. - Elizabeth O. Waagen, 1 February 2021
November 9, 2020
Alert Notice 723: Photometry and Spectroscopy requested for UXOR ASASSN-V J181654.06-202117.6
Note: The astronomers request continued observations to ascertain whether or not the eclipse is completely over. - Elizabeth O. Waagen, 6 April 2021
October 28, 2020
Alert Notice 722: N Sgr 2020 No. 4 = PNV J17545999-2122401 [V6593 Sgr]
The GCVS name V6593 Sgr has been assigned to this nova. Please use this name when submitting observations to the AAVSO International Database. - Elizabeth O. Waagen, 9 October 2020
October 5, 2020