Skip to main content
SearchLoginLogin or Signup

Observational Study of Near-Sun Comet C/2019 Y4 (ATLAS): Post-Perihelion Remnant Recovery

Presentation #322.12 in the session Comets (Poster)

Published onOct 23, 2023
Observational Study of Near-Sun Comet C/2019 Y4 (ATLAS): Post-Perihelion Remnant Recovery

In early 2020, near-Sun comet C/2019 Y4 (ATLAS) gained attention worldwide as a potential contender for naked-eye visibility due to its brightness and small perihelion distance (0.25 au). However, C/2019 Y4 began to disintegrate at 1 au from the Sun as it was approaching perihelion, splitting into at least four major pieces (Ye et al. 2021). The comet was last observed on May 21, 2020 (Kight & Battams 2020), 10 days before perihelion. Here we present preliminary results of our attempts to recover C/2019 Y4, or the remnant thereof, using the Lowell Discovery Telescope (LDT). We obtained images using LDT on August 20 and October 20, 2020, using the JPL ephemeris for the primary component of C/2019 Y4 as well as for the four published fragments (A to D). Nothing is found down to r=18.9 (for 2020 August data) and r=21.8 (for 2020 October data). We will present the detailed results at the conference and discuss their implications.

This work is supported by STScI grant HST-GO-16089.

References:

Knight, Matthew; Battams, Karl. “Morphology and photometry of comet C/2019 Y4 (ATLAS) from STEREO-A HI-1.” The Astronomer’s Telegram, No. 13813 (2020)

Ye, Quanzhi et al. “Disintegration of Long-period Comet C/2019 Y4 (ATLAS). I. Hubble Space Telescope Observations.” The Astronomical Journal 162 (2021): p. 70.

Comments
0
comment
No comments here