C/2014 UN271 (Bernardinelli–Bernstein) (English Wikipedia)

Ferrin, I.; Herrero, A. (29 April 2022). "Diameter and rotational period of Comet C/2014 UN271 (Bernardinelli-Bernstein)". The Astronomer's Telegram. 15356 (15356): 1. Bibcode:2022ATel15356....1F. Retrieved 24 May 2022.
Kokotanekova, Rosita; Lister, Tim; Bannister, Michele; Snodgrass, Colin; Opitom, Cyrielle; Schwamb, Meg; Kelley, Michael S. P. (22 June 2021). "Newly discovered object 2014 UN271 observed as active at 20.18 au". The Astronomer's Telegram. 14733 (14733): 1. Bibcode:2021ATel14733....1K. Retrieved 22 June 2021.
Farnham, Tony (6 July 2021). "Comet C/2014 UN271 (Bernardinelli–Bernstein) exhibited activity at 23.8 au". The Astronomer's Telegram. 14759 (14759): 1. Bibcode:2021ATel14759....1F. Retrieved 6 July 2021.
Kelley, Michael S. P.; Lister, Tim; Holt, Carrie E. (14 September 2021). "Apparent Outburst of Comet C/2014 UN271 (Bernardinelli–Bernstein)". The Astronomer's Telegram. 14917 (14917): 1. Bibcode:2021ATel14917....1K. Retrieved 15 September 2021.

astronomy.com (Global: low place; English: 8,690^th place)

Chandler, David L. (11 March 2025). "Astronomers have spotted the most distant comet ever discovered". Astronomy.com. Retrieved 29 August 2025.

doi.org (Global: 2^nd place; English: 2^nd place)

Bernardinelli, Pedro H.; Bernstein, Gary M.; Montet, Benjamin T.; Weryk, Robert; Wainscoat, Richard; et al. (November 2021). "C/2014 UN271 (Bernardinelli–Bernstein): The Nearly Spherical Cow of Comets". The Astrophysical Journal Letters. 921 (2): 14. arXiv:2109.09852. Bibcode:2021ApJ...921L..37B. doi:10.3847/2041-8213/ac32d3. OSTI 1829535. S2CID 237581632. L37.
Hui, Man-To; Jewitt, David; Yu, Liang-Liang; Mutchler, Max J. (April 2022). "Hubble Space Telescope Detection of the Nucleus of Comet C/2014 UN271 (Bernardinelli–Bernstein)". The Astrophysical Journal Letters. 929 (1). arXiv:2202.13168. Bibcode:2022ApJ...929L..12H. doi:10.3847/2041-8213/ac626a. S2CID 247158849. L12.
Lellouch, E.; Moreno, R.; Bockelée-Morvan, D.; Biver, N.; Santos-Sanz, P. (March 2022). "Size and albedo of the largest detected Oort-cloud object: comet C/2014 UN271 (Bernardinelli–Bernstein)" (PDF). Astronomy & Astrophysics. 659: 8. arXiv:2201.13188. Bibcode:2022A&A...659L...1L. doi:10.1051/0004-6361/202243090. S2CID 246430382. L1.
Bernardinelli, Pedro H.; Bernstein, Gary M.; Sako, Masao; Yanny, Brian; et al. (February 2022). "A search of the full six years of the Dark Energy Survey for outer Solar System objects". The Astrophysical Journal Supplement Series. 258 (2): 20. arXiv:2109.03758. Bibcode:2022ApJS..258...41B. doi:10.3847/1538-4365/ac3914. OSTI 1833281. S2CID 237440391. 41.
Farnham, Tony L.; Kelley, Michael S. P.; Bauer, James M. (December 2021). "Early Activity in Comet C/2014 UN271 Bernardinelli–Bernstein as Observed by TESS". The Planetary Science Journal. 2 (6): 8. Bibcode:2021PSJ.....2..236F. doi:10.3847/PSJ/ac323d. S2CID 244727277. 236.
Kramer, Emily A.; Fernandez, Yanga R.; Lisse, Carey M.; Kelley, Michael S. P.; Woodney, Laura M. (July 2014). "A dynamical analysis of the dust tail of Comet C/1995 O1 (Hale–Bopp) at high heliocentric distances". Icarus. 236: 136–145. arXiv:1404.2562. Bibcode:2014Icar..236..136K. doi:10.1016/j.icarus.2014.03.033. S2CID 119201510.
Hui, Man-To; Weryk, Robert; Micheli, Marco; Huang, Zhong; Wainscoat, Richard (March 2024). "Serendipitous Archival Observations of a New Ultradistant Comet C/2019 E3 (ATLAS)". The Astrophysical Journal. 167 (3). Bibcode:2024AJ....167..140H. doi:10.3847/1538-3881/ad2500. S2CID 266899954. 140.
Marcin, Wesołowski (March 2022). "Dust mass loss during the recent outburst of comet C/2014 UN271 Bernardinelli–Bernstein". Monthly Notices of the Royal Astronomical Society. 512 (4): 4683–4688. Bibcode:2022MNRAS.512.4683W. doi:10.1093/mnras/stac682.
Korsun, Pavlo P.; Rousselot, Philippe; Kulyk, Irina V.; Afanasiev, Viktor L.; Ivanova, Oleksandra V. (April 2014). "Distant activity of Comet C/2002 VQ94 (LINEAR): Optical spectrophotometric monitoring between 8.4 and 16.8 au from the Sun". Icarus. 232: 88–96. arXiv:1401.3137. Bibcode:2014Icar..232...88K. doi:10.1016/j.icarus.2014.01.006. S2CID 118462955.
Ridden-Harper, Ryan; Bannister, Michele T.; Kokotanekova, Rosita (July 2021). "No Rotational Variability in C/2014 UN271 (Bernardinelli–Bernstein) at 23.8 au and 21.1 au as Seen by TESS". Research Notes of the AAS. 5 (7): 161. Bibcode:2021RNAAS...5..161R. doi:10.3847/2515-5172/ac1512. S2CID 236166621.
Dybczyński, Piotr A.; Królikowska, Małgorzata (February 2022). "The influence of individual stars on the long-term dynamics of comets C/2014 UN271 and C/2017 K2" (PDF). Astronomy & Astrophysics. 660: A100. arXiv:2112.15353. Bibcode:2022A&A...660A.100D. doi:10.1051/0004-6361/202143018. S2CID 245634341.
Vokrouhlický, David; Nesvorný, David; Dones, Luke (May 2019). "Origin and Evolution of Long-period Comets". The Astronomical Journal. 157 (5): 10. arXiv:1904.00728. Bibcode:2019AJ....157..181V. doi:10.3847/1538-3881/ab13aa. S2CID 90261947. 181.

groups.io (Global: low place; English: low place)

Eubanks, Marshall (22 September 2021). "C/2014 UN271 a bust". International Occultation Timing Association Group. Retrieved 13 February 2022.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Bernardinelli, Pedro H.; Bernstein, Gary M.; Montet, Benjamin T.; Weryk, Robert; Wainscoat, Richard; et al. (November 2021). "C/2014 UN271 (Bernardinelli–Bernstein): The Nearly Spherical Cow of Comets". The Astrophysical Journal Letters. 921 (2): 14. arXiv:2109.09852. Bibcode:2021ApJ...921L..37B. doi:10.3847/2041-8213/ac32d3. OSTI 1829535. S2CID 237581632. L37.
Ferrin, I.; Herrero, A. (29 April 2022). "Diameter and rotational period of Comet C/2014 UN271 (Bernardinelli-Bernstein)". The Astronomer's Telegram. 15356 (15356): 1. Bibcode:2022ATel15356....1F. Retrieved 24 May 2022.
Hui, Man-To; Jewitt, David; Yu, Liang-Liang; Mutchler, Max J. (April 2022). "Hubble Space Telescope Detection of the Nucleus of Comet C/2014 UN271 (Bernardinelli–Bernstein)". The Astrophysical Journal Letters. 929 (1). arXiv:2202.13168. Bibcode:2022ApJ...929L..12H. doi:10.3847/2041-8213/ac626a. S2CID 247158849. L12.
Lellouch, E.; Moreno, R.; Bockelée-Morvan, D.; Biver, N.; Santos-Sanz, P. (March 2022). "Size and albedo of the largest detected Oort-cloud object: comet C/2014 UN271 (Bernardinelli–Bernstein)" (PDF). Astronomy & Astrophysics. 659: 8. arXiv:2201.13188. Bibcode:2022A&A...659L...1L. doi:10.1051/0004-6361/202243090. S2CID 246430382. L1.
Bernardinelli, Pedro; Bernstein, Gary (19 June 2021). "MPEC 2021-M53 : 2014 UN271". Minor Planet Electronic Circulars. 2021-M53. Minor Planet Center. Bibcode:2021MPEC....M...53B. Retrieved 19 June 2021.
Bernardinelli, Pedro H.; Bernstein, Gary M.; Sako, Masao; Yanny, Brian; et al. (February 2022). "A search of the full six years of the Dark Energy Survey for outer Solar System objects". The Astrophysical Journal Supplement Series. 258 (2): 20. arXiv:2109.03758. Bibcode:2022ApJS..258...41B. doi:10.3847/1538-4365/ac3914. OSTI 1833281. S2CID 237440391. 41.
Kokotanekova, Rosita; Lister, Tim; Bannister, Michele; Snodgrass, Colin; Opitom, Cyrielle; Schwamb, Meg; Kelley, Michael S. P. (22 June 2021). "Newly discovered object 2014 UN271 observed as active at 20.18 au". The Astronomer's Telegram. 14733 (14733): 1. Bibcode:2021ATel14733....1K. Retrieved 22 June 2021.
Farnham, Tony (6 July 2021). "Comet C/2014 UN271 (Bernardinelli–Bernstein) exhibited activity at 23.8 au". The Astronomer's Telegram. 14759 (14759): 1. Bibcode:2021ATel14759....1F. Retrieved 6 July 2021.
Farnham, Tony L.; Kelley, Michael S. P.; Bauer, James M. (December 2021). "Early Activity in Comet C/2014 UN271 Bernardinelli–Bernstein as Observed by TESS". The Planetary Science Journal. 2 (6): 8. Bibcode:2021PSJ.....2..236F. doi:10.3847/PSJ/ac323d. S2CID 244727277. 236.
Kramer, Emily A.; Fernandez, Yanga R.; Lisse, Carey M.; Kelley, Michael S. P.; Woodney, Laura M. (July 2014). "A dynamical analysis of the dust tail of Comet C/1995 O1 (Hale–Bopp) at high heliocentric distances". Icarus. 236: 136–145. arXiv:1404.2562. Bibcode:2014Icar..236..136K. doi:10.1016/j.icarus.2014.03.033. S2CID 119201510.
Hui, Man-To; Weryk, Robert; Micheli, Marco; Huang, Zhong; Wainscoat, Richard (March 2024). "Serendipitous Archival Observations of a New Ultradistant Comet C/2019 E3 (ATLAS)". The Astrophysical Journal. 167 (3). Bibcode:2024AJ....167..140H. doi:10.3847/1538-3881/ad2500. S2CID 266899954. 140.
Hui, Man-To (November 2021). "A Remarkable Inbound Long-Period Comet at Record Heliocentric Distances". Mikulski Archive for Space Telescopes (HST Proposal 16886). Space Telescope Science Institute: 16886. Bibcode:2021hst..prop16886H. Retrieved 14 February 2022.
Bolin, Bryce (November 2021). "Determining the coma contents of the incoming Oort Cloud comet C/2014 UN271". Mikulski Archive for Space Telescopes (HST Proposal 16878). Space Telescope Science Institute: 16878. Bibcode:2021hst..prop16878B. Retrieved 14 February 2022.
Marcin, Wesołowski (March 2022). "Dust mass loss during the recent outburst of comet C/2014 UN271 Bernardinelli–Bernstein". Monthly Notices of the Royal Astronomical Society. 512 (4): 4683–4688. Bibcode:2022MNRAS.512.4683W. doi:10.1093/mnras/stac682.
Kelley, Michael S. P.; Lister, Tim; Holt, Carrie E. (14 September 2021). "Apparent Outburst of Comet C/2014 UN271 (Bernardinelli–Bernstein)". The Astronomer's Telegram. 14917 (14917): 1. Bibcode:2021ATel14917....1K. Retrieved 15 September 2021.
Korsun, Pavlo P.; Rousselot, Philippe; Kulyk, Irina V.; Afanasiev, Viktor L.; Ivanova, Oleksandra V. (April 2014). "Distant activity of Comet C/2002 VQ94 (LINEAR): Optical spectrophotometric monitoring between 8.4 and 16.8 au from the Sun". Icarus. 232: 88–96. arXiv:1401.3137. Bibcode:2014Icar..232...88K. doi:10.1016/j.icarus.2014.01.006. S2CID 118462955.
Ridden-Harper, Ryan; Bannister, Michele T.; Kokotanekova, Rosita (July 2021). "No Rotational Variability in C/2014 UN271 (Bernardinelli–Bernstein) at 23.8 au and 21.1 au as Seen by TESS". Research Notes of the AAS. 5 (7): 161. Bibcode:2021RNAAS...5..161R. doi:10.3847/2515-5172/ac1512. S2CID 236166621.
Dybczyński, Piotr A.; Królikowska, Małgorzata (February 2022). "The influence of individual stars on the long-term dynamics of comets C/2014 UN271 and C/2017 K2" (PDF). Astronomy & Astrophysics. 660: A100. arXiv:2112.15353. Bibcode:2022A&A...660A.100D. doi:10.1051/0004-6361/202143018. S2CID 245634341.
Vokrouhlický, David; Nesvorný, David; Dones, Luke (May 2019). "Origin and Evolution of Long-period Comets". The Astronomical Journal. 157 (5): 10. arXiv:1904.00728. Bibcode:2019AJ....157..181V. doi:10.3847/1538-3881/ab13aa. S2CID 90261947. 181.

i4is.org (Global: low place; English: low place)

Hibberd, Adam (24 August 2021). "2014 UN₂₇₁ Spacecraft Missions" (PDF). Principium (34). Initiative for Interstellar Studies: 42–48. Retrieved 12 February 2022.
Davies, John I. (24 August 2021). "News Feature: Mission to 2014 UN271 using OITS" (PDF). Principium (34). Initiative for Interstellar Studies: 38–41. Retrieved 12 February 2022.

iau.org (Global: 1,985^th place; English: 2,539^th place)

"Naming of Astronomical Objects". International Astronomical Union. Archived from the original on 31 October 2013. Retrieved 20 February 2022.

minorplanetcenter.net (Global: 1,397^th place; English: 1,604^th place)

"MPEC 2021-M83 : COMET C/2014 UN271 (Bernardinelli–Bernstein)". Minor Planet Electronic Circulars. Minor Planet Center. 24 June 2021. Retrieved 24 June 2021.
Bernardinelli, Pedro; Bernstein, Gary (19 June 2021). "MPEC 2021-M53 : 2014 UN271". Minor Planet Electronic Circulars. 2021-M53. Minor Planet Center. Bibcode:2021MPEC....M...53B. Retrieved 19 June 2021.
"New- And Old-Style Minor Planet Designations". Minor Planet Center. Retrieved 20 February 2022.
"C/2014 UN271 (Bernardinelli–Bernstein)". Minor Planet Center. Retrieved 19 June 2021.

nasa.gov (Global: 75^th place; English: 83^rd place)

ssd.jpl.nasa.gov

JPL 1 (4 year arc) defined at epoch 2021-Jul-01 had aphelion (Q) = ~14,300 AU and period = ~604,000 years. The current orbit (15 year arc) defined at epoch 2021-Jul-01 also has aphelion (AD) = 14,500 AU and period = ~620,000 years. The solutions are basically the same.
"JPL Horizons On-Line Ephemeris for 2014 UN271 at epoch 1600 and 2500". JPL Horizons On-Line Ephemeris System. Jet Propulsion Laboratory. Retrieved 20 February 2022. Solution using the Solar System Barycenter. Ephemeris Type: Elements and Center: @0 (To be outside planetary region, inbound epoch 1600 and outbound epoch 2500. Aphelia/orbital periods defined while in the planetary-region are misleading for knowing the long-term inbound/outbound solutions.)
"Distance from Sun in 1600 and 2500". JPL Horizons On-Line Ephemeris System (Range, radial velocity/range rate, and range 3-sigma uncertainties). Jet Propulsion Laboratory. Retrieved 20 February 2022.
"Perihelion on 22 January 2031 (1 minute interval)". JPL Horizons On-Line Ephemeris System (Perihelion occurs when rdot flips from negative to positive at 23:23 UT). Jet Propulsion Laboratory. Archived from the original on 20 February 2022. Retrieved 1 January 2025.
"JPL Small-Body Database Browser: C/2014 UN271 (Bernardinelli–Bernstein)" (2022-02-13 last obs.). Jet Propulsion Laboratory. Retrieved 14 February 2022.
"Distance from Sun from 2010 to 2023 (1 month interval)". JPL Horizons On-Line Ephemeris System (Range, radial velocity/range rate, Constellation, and range 3-sigma uncertainties). Jet Propulsion Laboratory. Retrieved 20 February 2022.
"Closest Approach to Earth in 2031 (3 hour interval)". JPL Horizons On-Line Ephemeris System (Closest Earth approach occurs when deldot flips from negative to positive). Jet Propulsion Laboratory. Retrieved 25 June 2021.
"Ecliptic crossing in August 2033 (1 hour interval)". JPL Horizons On-Line Ephemeris System (Ecliptic crossing occurs when Z flips from negative to positive). Jet Propulsion Laboratory. Retrieved 20 February 2022.

nssdc.gsfc.nasa.gov

Williams, David R. (23 December 2021). "Pluto Fact Sheet". NASA Space Science Data Coordinated Archive. NASA. Retrieved 20 February 2022.
Williams, David R. (27 December 2021). "Planetary Fact Sheet - Metric". NASA Space Science Data Coordinated Archive. NASA. Retrieved 20 February 2022.

nasa.gov

Gianopoulos, Andrea (12 April 2022). "Hubble Confirms Largest Comet Nucleus Ever Seen". NASA. Retrieved 12 April 2022.

newatlas.com (Global: 5,636^th place; English: 3,692^nd place)

Irving, Michael (20 June 2021). "Extremely eccentric minor planet to visit inner solar system this decade". New Atlas. Retrieved 21 June 2021.

noirlab.edu (Global: low place; English: low place)

Kocz, Amanda (25 June 2021). "Giant Comet Found in Outer Solar System by Dark Energy Survey". NOIRLab. Retrieved 25 June 2021.
"Illustration of Comet Bernardinelli–Bernstein". NOIRLab. 25 June 2021. Retrieved 14 July 2021.

nytimes.com (Global: 7^th place; English: 7^th place)

Andrews, Robin George (14 April 2022). "Hubble Telescope Zooms In on the Biggest Comet Ever Spotted". The New York Times. Retrieved 14 April 2022.

osti.gov (Global: 2,036^th place; English: 1,254^th place)

Bernardinelli, Pedro H.; Bernstein, Gary M.; Montet, Benjamin T.; Weryk, Robert; Wainscoat, Richard; et al. (November 2021). "C/2014 UN271 (Bernardinelli–Bernstein): The Nearly Spherical Cow of Comets". The Astrophysical Journal Letters. 921 (2): 14. arXiv:2109.09852. Bibcode:2021ApJ...921L..37B. doi:10.3847/2041-8213/ac32d3. OSTI 1829535. S2CID 237581632. L37.
Bernardinelli, Pedro H.; Bernstein, Gary M.; Sako, Masao; Yanny, Brian; et al. (February 2022). "A search of the full six years of the Dark Energy Survey for outer Solar System objects". The Astrophysical Journal Supplement Series. 258 (2): 20. arXiv:2109.03758. Bibcode:2022ApJS..258...41B. doi:10.3847/1538-4365/ac3914. OSTI 1833281. S2CID 237440391. 41.

physicsworld.com (Global: 6,140^th place; English: 4,691^st place)

Gater, Will (24 June 2021). "Huge Oort Cloud object has been spotted entering the solar system". PhysicsWorld. Retrieved 24 June 2021.

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Bernardinelli, Pedro H.; Bernstein, Gary M.; Montet, Benjamin T.; Weryk, Robert; Wainscoat, Richard; et al. (November 2021). "C/2014 UN271 (Bernardinelli–Bernstein): The Nearly Spherical Cow of Comets". The Astrophysical Journal Letters. 921 (2): 14. arXiv:2109.09852. Bibcode:2021ApJ...921L..37B. doi:10.3847/2041-8213/ac32d3. OSTI 1829535. S2CID 237581632. L37.
Hui, Man-To; Jewitt, David; Yu, Liang-Liang; Mutchler, Max J. (April 2022). "Hubble Space Telescope Detection of the Nucleus of Comet C/2014 UN271 (Bernardinelli–Bernstein)". The Astrophysical Journal Letters. 929 (1). arXiv:2202.13168. Bibcode:2022ApJ...929L..12H. doi:10.3847/2041-8213/ac626a. S2CID 247158849. L12.
Lellouch, E.; Moreno, R.; Bockelée-Morvan, D.; Biver, N.; Santos-Sanz, P. (March 2022). "Size and albedo of the largest detected Oort-cloud object: comet C/2014 UN271 (Bernardinelli–Bernstein)" (PDF). Astronomy & Astrophysics. 659: 8. arXiv:2201.13188. Bibcode:2022A&A...659L...1L. doi:10.1051/0004-6361/202243090. S2CID 246430382. L1.
Bernardinelli, Pedro H.; Bernstein, Gary M.; Sako, Masao; Yanny, Brian; et al. (February 2022). "A search of the full six years of the Dark Energy Survey for outer Solar System objects". The Astrophysical Journal Supplement Series. 258 (2): 20. arXiv:2109.03758. Bibcode:2022ApJS..258...41B. doi:10.3847/1538-4365/ac3914. OSTI 1833281. S2CID 237440391. 41.
Farnham, Tony L.; Kelley, Michael S. P.; Bauer, James M. (December 2021). "Early Activity in Comet C/2014 UN271 Bernardinelli–Bernstein as Observed by TESS". The Planetary Science Journal. 2 (6): 8. Bibcode:2021PSJ.....2..236F. doi:10.3847/PSJ/ac323d. S2CID 244727277. 236.
Kramer, Emily A.; Fernandez, Yanga R.; Lisse, Carey M.; Kelley, Michael S. P.; Woodney, Laura M. (July 2014). "A dynamical analysis of the dust tail of Comet C/1995 O1 (Hale–Bopp) at high heliocentric distances". Icarus. 236: 136–145. arXiv:1404.2562. Bibcode:2014Icar..236..136K. doi:10.1016/j.icarus.2014.03.033. S2CID 119201510.
Hui, Man-To; Weryk, Robert; Micheli, Marco; Huang, Zhong; Wainscoat, Richard (March 2024). "Serendipitous Archival Observations of a New Ultradistant Comet C/2019 E3 (ATLAS)". The Astrophysical Journal. 167 (3). Bibcode:2024AJ....167..140H. doi:10.3847/1538-3881/ad2500. S2CID 266899954. 140.
Korsun, Pavlo P.; Rousselot, Philippe; Kulyk, Irina V.; Afanasiev, Viktor L.; Ivanova, Oleksandra V. (April 2014). "Distant activity of Comet C/2002 VQ94 (LINEAR): Optical spectrophotometric monitoring between 8.4 and 16.8 au from the Sun". Icarus. 232: 88–96. arXiv:1401.3137. Bibcode:2014Icar..232...88K. doi:10.1016/j.icarus.2014.01.006. S2CID 118462955.
Ridden-Harper, Ryan; Bannister, Michele T.; Kokotanekova, Rosita (July 2021). "No Rotational Variability in C/2014 UN271 (Bernardinelli–Bernstein) at 23.8 au and 21.1 au as Seen by TESS". Research Notes of the AAS. 5 (7): 161. Bibcode:2021RNAAS...5..161R. doi:10.3847/2515-5172/ac1512. S2CID 236166621.
Dybczyński, Piotr A.; Królikowska, Małgorzata (February 2022). "The influence of individual stars on the long-term dynamics of comets C/2014 UN271 and C/2017 K2" (PDF). Astronomy & Astrophysics. 660: A100. arXiv:2112.15353. Bibcode:2022A&A...660A.100D. doi:10.1051/0004-6361/202143018. S2CID 245634341.
Vokrouhlický, David; Nesvorný, David; Dones, Luke (May 2019). "Origin and Evolution of Long-period Comets". The Astronomical Journal. 157 (5): 10. arXiv:1904.00728. Bibcode:2019AJ....157..181V. doi:10.3847/1538-3881/ab13aa. S2CID 90261947. 181.

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Johnson-Roehr (4 July 2021). "See Pluto in 2015". Sky & Telescope. Retrieved 4 July 2021.
Hecht, Jeff (22 June 2021). "Giant Oort Cloud Comet Lights Up in the Outer Solar System". Sky & Telescope. Retrieved 14 April 2022.

space.com (Global: 936^th place; English: 713^th place)

Meghan, Bartels (7 September 2021). "The 'megacomet' Bernardinelli–Bernstein is the find of a decade. Here's the discovery explained". Space.com. Retrieved 15 February 2022.

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mail.spaceobs.com

Green, Daniel W. E. (21 June 2021). "CBET 4983: 2014 UN_271". Central Bureau Electronic Telegram. Central Bureau for Astronomical Telegrams. Archived from the original on 14 June 2022. Retrieved 14 June 2022.

stsci.edu (Global: low place; English: low place)

archive.stsci.edu

Hui, Man-To (November 2021). "A Remarkable Inbound Long-Period Comet at Record Heliocentric Distances". Mikulski Archive for Space Telescopes (HST Proposal 16886). Space Telescope Science Institute: 16886. Bibcode:2021hst..prop16886H. Retrieved 14 February 2022.
Bolin, Bryce (November 2021). "Determining the coma contents of the incoming Oort Cloud comet C/2014 UN271". Mikulski Archive for Space Telescopes (HST Proposal 16878). Space Telescope Science Institute: 16878. Bibcode:2021hst..prop16878B. Retrieved 14 February 2022.

web.archive.org (Global: 1^st place; English: 1^st place)

JPL 1 (4 year arc) defined at epoch 2021-Jul-01 had aphelion (Q) = ~14,300 AU and period = ~604,000 years. The current orbit (15 year arc) defined at epoch 2021-Jul-01 also has aphelion (AD) = 14,500 AU and period = ~620,000 years. The solutions are basically the same.
"Perihelion on 22 January 2031 (1 minute interval)". JPL Horizons On-Line Ephemeris System (Perihelion occurs when rdot flips from negative to positive at 23:23 UT). Jet Propulsion Laboratory. Archived from the original on 20 February 2022. Retrieved 1 January 2025.
Green, Daniel W. E. (21 June 2021). "CBET 4983: 2014 UN_271". Central Bureau Electronic Telegram. Central Bureau for Astronomical Telegrams. Archived from the original on 14 June 2022. Retrieved 14 June 2022.
"Naming of Astronomical Objects". International Astronomical Union. Archived from the original on 31 October 2013. Retrieved 20 February 2022.

wsaag.org (Global: low place; English: low place)

Barry, Tony (8 February 2021). "Occultation by the Big Comet C/2014 UN271 from the Oort Cloud predicted for Sun 19th September at 2:45am AEST Sydney time" (PDF). Western Sydney Amateur Astronomy Group. Retrieved 13 February 2022.

x.com (Global: low place; English: low place)

@CometIntercept (23 June 2021). "There's understandably a _lot_ of excitement about the newly-discovered, apparently huge comet, 2014 UN271. Many people are asking whether our mission could reach it. After all, encountering a long-period comet is Comet Interceptor's main aim. Unfortunately,..." (Tweet). Retrieved 12 February 2022 – via Twitter.

C/2014 UN271 (Bernardinelli–Bernstein) (English Wikipedia)

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osti.gov (Global: 2,036th place; English: 1,254th place)

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semanticscholar.org (Global: 11th place; English: 8th place)

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skyandtelescope.org (Global: low place; English: low place)

space.com (Global: 936th place; English: 713th place)

spaceobs.com (Global: low place; English: low place)

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stsci.edu (Global: low place; English: low place)

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web.archive.org (Global: 1st place; English: 1st place)

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x.com (Global: low place; English: low place)

aanda.org (Global: 5,591^st place; English: 5,552^nd place)

arxiv.org (Global: 69^th place; English: 59^th place)

astronomy.com (Global: low place; English: 8,690^th place)

doi.org (Global: 2^nd place; English: 2^nd place)

harvard.edu (Global: 18^th place; English: 17^th place)

iau.org (Global: 1,985^th place; English: 2,539^th place)

minorplanetcenter.net (Global: 1,397^th place; English: 1,604^th place)

nasa.gov (Global: 75^th place; English: 83^rd place)

newatlas.com (Global: 5,636^th place; English: 3,692^nd place)

nytimes.com (Global: 7^th place; English: 7^th place)

osti.gov (Global: 2,036^th place; English: 1,254^th place)

physicsworld.com (Global: 6,140^th place; English: 4,691^st place)

semanticscholar.org (Global: 11^th place; English: 8^th place)

space.com (Global: 936^th place; English: 713^th place)

web.archive.org (Global: 1^st place; English: 1^st place)