C/2021 A1 (Leonard) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "C/2021 A1 (Leonard)" in English language version.

refsWebsite

Global rank English rank

5nasa.gov

75^th place

83^rd place

3web.archive.org

1^st place

2skyandtelescope.org

low place

2x.com

low place

2astronomerstelegram.org

low place

2doi.org

2^nd place

2arxiv.org

69^th place

59^th place

2harvard.edu

18^th place

17^th place

1minorplanetcenter.net

1,397^th place

1,604^th place

1abc.net.au

139^th place

108^th place

1space.com

936^th place

713^th place

1vanbuitenen.nl

low place

1uni-jena.de

4,878^th place

4,120^th place

1aerith.net

low place

1cobs.si

low place

1earthsky.org

6,724^th place

5,463^rd place

1stsci.edu

low place

1semanticscholar.org

11^th place

8^th place

abc.net.au

Weule, Genelle (8 December 2021). "Astronomers anxiously watch Comet Leonard to see if it will live up to predictions as a Christmas treat over Australia". ABC News. Australian Broadcasting Corporation. Retrieved 8 December 2021.

aerith.net

Magnitude estimate – Seiichi Yoshida

arxiv.org

Jewitt, David; Kim, Yoonyoung; Mattiazzo, Michael; Mutchler, Max; Li, Jing; Agarwal, Jessica (1 March 2023). "Disintegration of Long-period Comet C/2021 A1 (Leonard)". The Astronomical Journal. 165 (3): 122. arXiv:2301.08673. Bibcode:2023AJ....165..122J. doi:10.3847/1538-3881/acb53b. S2CID 256080755.
Zhang, Qicheng; Ye, Quanzhi; Vissapragada, Shreyas; Knight, Matthew M.; Farnham, Tony L. (1 November 2021). "Preview of Comet C/2021 A1 (Leonard) and Its Encounter with Venus". The Astronomical Journal. 162 (5): 194. arXiv:2107.12370. Bibcode:2021AJ....162..194Z. doi:10.3847/1538-3881/ac19ba.

astronomerstelegram.org

"ATel #15119: Follow-up Observations of Comet C/2021 A1 (Leonard)". The Astronomer's Telegram. 16 December 2021. Retrieved 4 February 2023.
"ATel #15189: Outburst of comet C/2021 A1 (Leonard) on January 7, 2021". The Astronomer's Telegram. 2022-01-27.

cobs.si

"What happened to C/2021 A1 (Leonard)?". Archived from the original on 2022-01-16. Retrieved 2021-12-19.

doi.org

Jewitt, David; Kim, Yoonyoung; Mattiazzo, Michael; Mutchler, Max; Li, Jing; Agarwal, Jessica (1 March 2023). "Disintegration of Long-period Comet C/2021 A1 (Leonard)". The Astronomical Journal. 165 (3): 122. arXiv:2301.08673. Bibcode:2023AJ....165..122J. doi:10.3847/1538-3881/acb53b. S2CID 256080755.
Zhang, Qicheng; Ye, Quanzhi; Vissapragada, Shreyas; Knight, Matthew M.; Farnham, Tony L. (1 November 2021). "Preview of Comet C/2021 A1 (Leonard) and Its Encounter with Venus". The Astronomical Journal. 162 (5): 194. arXiv:2107.12370. Bibcode:2021AJ....162..194Z. doi:10.3847/1538-3881/ac19ba.

earthsky.org

Machholz, Donald (21 March 2022). "Comet Leonard has disintegrated". earthsky.org. Retrieved 22 March 2022.

harvard.edu

ui.adsabs.harvard.edu

Jewitt, David; Kim, Yoonyoung; Mattiazzo, Michael; Mutchler, Max; Li, Jing; Agarwal, Jessica (1 March 2023). "Disintegration of Long-period Comet C/2021 A1 (Leonard)". The Astronomical Journal. 165 (3): 122. arXiv:2301.08673. Bibcode:2023AJ....165..122J. doi:10.3847/1538-3881/acb53b. S2CID 256080755.
Zhang, Qicheng; Ye, Quanzhi; Vissapragada, Shreyas; Knight, Matthew M.; Farnham, Tony L. (1 November 2021). "Preview of Comet C/2021 A1 (Leonard) and Its Encounter with Venus". The Astronomical Journal. 162 (5): 194. arXiv:2107.12370. Bibcode:2021AJ....162..194Z. doi:10.3847/1538-3881/ac19ba.

minorplanetcenter.net

"MPEC 2021-A99 : COMET C/2021 A1 (Leonard)". Minor Planet Center. Retrieved 2021-01-10.

nasa.gov

ssd.jpl.nasa.gov

Horizons output. "Barycentric Osculating Orbital Elements for Comet C/2021 A1 (Leonard)". Retrieved 2021-01-13. (Solution using the Solar System's barycenter (Sun+Jupiter). Select Ephemeris Type:Elements and Center:@0) Epoch 1950 has PR= 2.91E+07 / 365.25 = 79700 years
"JPL Small-Body Database Browser: C/2021 A1". JPL. Retrieved 2021-09-29.
Horizons output. "Solar elongation Comet C/2021 A1 (Leonard) in mid-December 2021". Retrieved 2021-10-17. Sun-Observer-Target (S-O-T)
Neptune has perihelion (closest approach to the Sun) at 29.8 AU. C/2021 A1 has been inside that distance since May 2009.

apod.nasa.gov

"APOD: 2021 December 30 - The Further Tail of Comet Leonard". apod.nasa.gov. Retrieved 17 January 2022.

semanticscholar.org

api.semanticscholar.org

Jewitt, David; Kim, Yoonyoung; Mattiazzo, Michael; Mutchler, Max; Li, Jing; Agarwal, Jessica (1 March 2023). "Disintegration of Long-period Comet C/2021 A1 (Leonard)". The Astronomical Journal. 165 (3): 122. arXiv:2301.08673. Bibcode:2023AJ....165..122J. doi:10.3847/1538-3881/acb53b. S2CID 256080755.

skyandtelescope.org

"How Bright Will Comet Leonard Get?". Sky & Telescope. 2021-10-13. Retrieved 2021-10-20.
"Comet Leonard: A Gift at Christmastime". Sky & Telescope. 25 December 2021. Retrieved 17 January 2022.

space.com

Bartels, Meghan (9 December 2021). "Comet Leonard, the brightest of the year, is fading and acting strange". Space.com. Retrieved 22 October 2022.

stsci.edu

archive.stsci.edu

Jewitt, David (7 March 2022). "Disintegration of Long-Period Comet C/2021 A1 – HST Proposal 16929". Space Telescope Science Institute.

uni-jena.de

astro.uni-jena.de

"Follow-up Observations of Comet C/2021 A2 (Leonard)". 16 December 2021. Retrieved 16 December 2021.

vanbuitenen.nl

astro.vanbuitenen.nl

"C/2021 A1 (Leonard)". Gideon van Buitenen. Retrieved 2021-11-16.

web.archive.org

McKenna, Martin [@martinastro2005] (December 5, 2021). "I could see comet Leonard with the naked eye last from Davagh forest, est mag +6.2, tail visible as a faint streak 1 degree in length, exceptional transparency due to cold air. #leonardnakedeye" (Tweet). Archived from the original on 2021-12-05 – via Twitter.
Ζhаng, Qiсhеng [@aciqra] (December 16, 2021). "Not the best weather here in Pasadena this week, but was fortunate enough to manage a brief peek at comet C/2021 A1 (Leonard) while at 159 deg phase angle, near maximum forward scattering. It's a rarely seen geometry, where we look almost straight down its tail" (Tweet). Archived from the original on 2021-12-16 – via Twitter.
"What happened to C/2021 A1 (Leonard)?". Archived from the original on 2022-01-16. Retrieved 2021-12-19.

x.com

McKenna, Martin [@martinastro2005] (December 5, 2021). "I could see comet Leonard with the naked eye last from Davagh forest, est mag +6.2, tail visible as a faint streak 1 degree in length, exceptional transparency due to cold air. #leonardnakedeye" (Tweet). Archived from the original on 2021-12-05 – via Twitter.
Ζhаng, Qiсhеng [@aciqra] (December 16, 2021). "Not the best weather here in Pasadena this week, but was fortunate enough to manage a brief peek at comet C/2021 A1 (Leonard) while at 159 deg phase angle, near maximum forward scattering. It's a rarely seen geometry, where we look almost straight down its tail" (Tweet). Archived from the original on 2021-12-16 – via Twitter.