Oort Cloud comets discovered far from the Sun | Astronomy & Astrophysics (A&A)

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Table 1

Oort Cloud comets discovered before 2022 more than 10 au from the Sun or with prediscovery detections beyond 10 au.

Comet	q	Heliocentric distance (au)		T_per
	(au)	Discovery	Prediscovery	(yyyy mm dd)
C/2001 Q4	0.96	10.1	–	2004 05 15
C/2003 A2	11.4	11.5	11.9	2003 11 06
C/2005 L3	5.59	8.68	10.3	2008 01 16
C/2006 S3	5.13	13.3	26.1	2012 04 12
C/2008 S3	8.01	9.46	12.4	2011 06 10
C/2010 U3	8.48	18.4	25.8	2019 02 26
C/2012 LP₂₆	6.54	9.19	10.0	2015 08 16
C/2014 B1	9.56	12.0	–	2017 09 08
C/2014 UN₂₇₁	10.9	29.0	34.1	2031 01 22
C/2015 D3	8.15	7.69	10.5	2016 05 03
C/2016 Q2	7.08	12.6	–	2021 09 28
C/2017 E3	5.92	5.95	10.3	2017 05 31
C/2017 K2	1.81	16.0	23.7	2022 12 19
C/2019 E3	10.3	12.9	18.5	2023 11 15
C/2019 U5	3.62	10.4	10.5	2023 03 29
C/2020 F2	8.82	10.1	11.0	2022 07 15
C/2020 V2	2.23	8.71	10.1	2023 05 08
C/2021 A9	7.76	10.0	10.1	2023 12 01
C/2021 Q4	7.56	8.58	10.2	2023 06 10
C/2021 Q6	8.72	10.3	11.0	2024 03 21

Notes. We list the comets’ perihelion distances (q); their heliocentric distances at discovery and in their earliest prediscovery detection; and their dates of perihelion passage T_per. The perihelion date is given for a standard epoch close to the moment of perihelion passage.

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