Alert Notice 728: V510 Ori coverage needed for HST observations

February 3, 2021

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/northern-t-tau-stars-campaign
- Young Stellar Objects: https//www.aavso.org/northern-t-tau-stars-campaign-01

Please subscribe to these threads if you are participating in the campaign so you can be updated by the astronomer and by HQ. Join in the discussion or ask questions there!

Further to AAVSO Alert Notice 725, Dr. Fred Walter (Stony Brook University) informs us that the T Tau star V510 Ori, one of the targets in his campaign on Northern T Tauri stars, will be re-observed with the Hubble Space Telescope on:

12 February 2021 06:03 - 13:28 UT

Observers are requested to resume observations of this star and continue obtaining a few observations per night from now through February 15. It is important to use standard broadband filters. Please concentrate on B, V, and Ic; Rc and U are also useful. Visual observations are welcome.

V510 Ori has a range of 13.5 - 15.3 V, with a mean magnitude (not midpoint) of 14.3 V.

Coordinates (2000.0):  R.A. 05 39 39.83  Dec. -02 31 21.9  (from VSX entry for V510 Ori)

Charts with comparison stars for V510 Ori may be created using the AAVSO Variable Star Plotter (VSP).

Submit observations: Please submit observations to the AAVSO International Database using the name V510 ORI.

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.

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