C/2019 Y1 (ATLAS)
{{short description|Non-periodic comet}}
{{For|other comets discovered by the Asteroid Terrestrial-impact Last Alert System|Comet ATLAS (disambiguation)}}
{{Use dmy dates|date=June 2023}}
{{Infobox comet
| name = C/2019 Y1 (ATLAS)
| image = C2019_y1-orbit.png
| caption = Near parabolic orbit has its perihelion above the northern ecliptic
| discovery_ref = {{r|MPEC_2020-A72}}
| discoverer = J. Robinson
| discovery_site = ATLAS–HKO (T05)
| discovery_date = 16 December 2019
| designations = A10iMHA{{r|CBET_4708}}
CK19Y010
| orbit_ref = {{r|jpl}}
| epoch = 12 April 2020
(JD 2458951.5)
| observation_arc = 208 days
| obs = 1,010
| aphelion = {{val|669.1457|3.3432}} AU
| perihelion = 0.838 AU
| semimajor = ~240 AU
| eccentricity = 0.99651
| period = ~3,720 years
| inclination = 73.348°
| asc_node = 31.366°
| arg_peri = 57.498°
| mean = 0.007°
| tjup =
| Earth_moid = 0.083 AU
| Jupiter_moid = 1.026 AU
| physical_ref = {{r|Jewitt_2022}}
| dimensions = {{cvt|1.2|km|mi}}
| M1 = {{val|11.9|1.0}}
| M2 = {{val|13.8|0.5}}
| last_p = 15 March 2020
| next_p =
}}
C/2019 Y1 (ATLAS) is a comet with a near-parabolic orbit discovered by the ATLAS survey on 16 December 2019. It passed perihelion on 15 March 2020 at 0.84 AU from the Sun.{{r|jpl}} Its orbit is very similar to C/1988 A1 (Liller), C/1996 Q1 (Tabur), C/2015 F3 (SWAN) and C/2023 V5 (Leonard), suggesting they may be fragments of a larger ancient comet.{{r|Dickinson_2020}}
Observations
The comet passed close to Earth in early May 2020. It was visible in the northern hemisphere sky in the spring of 2020.
References
{{reflist|refs=
| author1= D. W. Green
| title= Comet C/2019 Y1 (ATLAS)
| url= http://www.cbat.eps.harvard.edu/iau/cbet/004700/CBET004708.txt
| journal= Central Bureau for Astronomical Telegrams
| volume= 4708
| date= 5 January 2020 }}
| author1= D. Dickinson
| title= Following Comet Y1 ATLAS: the "Lost Comet" of Spring
| url= https://www.universetoday.com/145386/following-comet-y1-atlas-the-lost-comet-of-spring
| website= Universe Today
| date= 25 March 2020
| access-date= 14 May 2020 }}
| author1= D. C. Jewitt
| title= Destruction of Long-period Comets
| url= https://iopscience.iop.org/article/10.3847/1538-3881/ac886d/pdf
| journal= Astronomical Journal
| year= 2022
| volume= 164
| issue= 4
| pages= 158–166
| bibcode= 2022AJ....164..158J
| arxiv= 2208.04469
| doi= 10.3847/1538-3881/ac886d
| doi-access= free }}
| title= C/2019 Y1 (ATLAS) – JPL Small-Body Database Lookup
| url= https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019Y1
| website= ssd.jpl.nasa.gov
| publisher= Jet Propulsion Laboratory
| access-date= 13 May 2020 }}
| title= MPEC 2020-A72 : Comet C/2019 Y1 (ATLAS)
| url= https://www.minorplanetcenter.net/mpec/K20/K20A72.html
| website= www.minorplanetcenter.net
| publisher= Minor Planet Center
| date= 5 January 2020
| access-date= 25 January 2025 }}
}}
External links
- {{JPL Small Body|id=1003652}}
- [https://theskylive.com/c2019y1-info TheSkyLive] {{Webarchive|url=https://web.archive.org/web/20200607174128/https://theskylive.com/c2019y1-info |date=7 June 2020 }} Comet C/2019 Y1 (ATLAS)
- [http://astro.vanbuitenen.nl/comet/2019Y1 astro.vanbuitenen.nl] 2019Y1
{{Comets}}
{{Authority control}}
{{DEFAULTSORT:ATLAS, 2019 Y1}}
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