M. R. Combi, T. Mäkinen, Jean‐Loup Bertaux, Éric Quémerais, S. Ferron,
... three long period comets, C/2020 S3 (Erasmus), C/2021 A1 (Leonard) and C/2021 O3 (PanSTARRS) were observed with ... before its perihelion at 0.28 au and C/2021 A1 (Leonard) which also disintegrated beginning about 20 days after ...
Tópico(s): Atmospheric Ozone and Climate
2023 - Elsevier BV | Icarus
David Jewitt, Yoonyoung Kim, M. Mattiazzo, Max Mutchler, Jing Li, Jessica Agarwal,
... imaging observations of the disintegrating long-period comet C/2021 A1 (Leonard). High-resolution observations with the Hubble Space Telescope ...
Tópico(s): Atmospheric Ozone and Climate
2023 - Institute of Physics | The Astronomical Journal
M. Lippi, Mathieu Vander Donckt, Sara Faggi, Youssef Moulane, M. J. Mumma, Gerónimo Villanueva, Emmanuël Jehin,
Aims. We report on the composition of comet C/2021 A1 (Leonard) as measured by CRIRES + , the upgraded high resolution ... the near-UV-visible using TRAPPIST-South. Methods. C/2021 A1 (Leonard) was observed with CRIRES + on December 29, 2021 ...
Tópico(s): Atmospheric Ozone and Climate
2023 - EDP Sciences | Astronomy and Astrophysics
Sara Faggi, M. Lippi, M. J. Mumma, Gerónimo Villanueva,
Abstract We measured the chemical composition of comet C/2021 A1 (Leonard) using the long-slit echelle grating spectrograph iSHELL/ ...
Tópico(s): Atmospheric Ozone and Climate
2023 - Institute of Physics | The Planetary Science Journal
Qicheng Zhang, Quanzhi Ye, Shreyas Vissapragada, Matthew M. Knight, T. L. Farnham,
Long period comet C/2021 A1 (Leonard) will approach Venus to within 0.029 au on 2021 December 18 and may subsequently graze the planet with its dust trail less than two days later. We observed C/2021 A1 with the Lowell Discovery Telescope on 2021 January 13 and March 3, as well as with the Palomar Hale Telescope on 2021 ...
Tópico(s): Isotope Analysis in Ecology
2021 - Institute of Physics | The Astronomical Journal
N. Biver, D. Bockelée‐Morvan, Barbara Handzlik, Aa. Sandqvist, J. Boissier, M. N. Drozdovskaya, Ramón Moreno, J. Crovisier, D. C. Lis, Martin Cordiner, Stefanie N. Milam, Nathanial Roth, B. P. Bonev, N. Dello Russo, R. J. Vervack, C. Opitom, Hideyo Kawakita,
... of a molecular survey of long period comets C/2021 A1 (Leonard) and C/2022 E3 (ZTF). Comet C/2021 A1 was observed with the Institut de radioastronomie millimétrique ( ...
Tópico(s): Atmospheric Ozone and Climate
2024 - EDP Sciences | Astronomy and Astrophysics
R. García, E. Fernández Lajús, R. P. Di Sisto, R. Gil-Hutton,
... entering the planetary region. Images of the comet C/2021 A1 (Leonard) obtained in March 2022 allow to estimate that ...
Tópico(s): Stellar, planetary, and galactic studies
2024 - Elsevier BV | Icarus
David Jewitt, Yoonyoung Kim, M. Mattiazzo, Max Mutchler, Jing Li, Jessica Agarwal,
Tópico(s): SAS software applications and methods
2023 - Institute of Physics | The Astronomical Journal
Long-Fei Chen, Chao‐Wei Tsai, Jian‐Yang Li, Bin Yang, Di Li, Yan Duan, Chih-Hao Hsia, Zhichen Pan, Lei Qian, Donghui Quan, Xue-Jian Jiang, Xiaohu Li, Ruining Zhao, Pei Zuo,
... C/2020 F3 (NEOWISE), C/2020 R4 (ATLAS), C/2021 A1 (Leonard), and 67P/Churyumov-Gerasimenko during or after their ...
Tópico(s): Atmospheric Ozone and Climate
2024 - IOP Publishing | Research in Astronomy and Astrophysics
Sarah R. Watson, Christopher J. Scott, M. J. Owens, Luke Barnard,
... situ solar wind monitors. During 2021 December, Comet Leonard (C/2021 A1) was observed by the STEREO-A heliospheric imager. ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2024 - IOP Publishing | The Astrophysical Journal
... comet. Based on the prediction model, the comet C/2021 A1 (Leonard) was observed in 1.6 GHz frequency band ...
Tópico(s): Advanced Chemical Sensor Technologies
2022 - Taylor & Francis | Astronomical and Astrophysical Transactions