C/2019 Y1 (ATLAS)
 Near parabolic orbit has its perihelion above the northern ecliptic | |
| Discovery[1] | |
|---|---|
| Discovered by | J. Robinson |
| Discovery site | ATLAS–HKO (T05) |
| Discovery date | 16 December 2019 |
| Designations | |
| A10iMHA[2] CK19Y010 | |
| Orbital characteristics[3] | |
| Epoch | 12 April 2020 (JD 2458951.5) |
| Observation arc | 208 days |
| Number of observations | 1,010 |
| Aphelion | 669.1457±3.3432 AU |
| Perihelion | 0.838 AU |
| Semi-major axis | ~240 AU |
| Eccentricity | 0.99651 |
| Orbital period | ~3,720 years |
| Inclination | 73.348° |
| 31.366° | |
| Argument of periapsis | 57.498° |
| Mean anomaly | 0.007° |
| Last perihelion | 15 March 2020 |
| Earth MOID | 0.083 AU |
| Jupiter MOID | 1.026 AU |
| Physical characteristics[4] | |
| Dimensions | 1.2 km (0.75 mi) |
| Comet total magnitude (M1) | 11.9±1.0 |
| Comet nuclear magnitude (M2) | 13.8±0.5 |
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.[3] 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.[5]
Observations
[edit]
The comet passed close to Earth in early May 2020. It was visible in the northern hemisphere sky in the spring of 2020.
References
[edit]- ^ "MPEC 2020-A72 : Comet C/2019 Y1 (ATLAS)". www.minorplanetcenter.net. Minor Planet Center. 5 January 2020. Retrieved 25 January 2025.
- ^ D. W. Green (5 January 2020). "Comet C/2019 Y1 (ATLAS)". Central Bureau for Astronomical Telegrams. 4708.
- ^ a b "C/2019 Y1 (ATLAS) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 13 May 2020.
- ^ D. C. Jewitt (2022). "Destruction of Long-period Comets". Astronomical Journal. 164 (4): 158–166. arXiv:2208.04469. Bibcode:2022AJ....164..158J. doi:10.3847/1538-3881/ac886d.
- ^ D. Dickinson (25 March 2020). "Following Comet Y1 ATLAS: the "Lost Comet" of Spring". Universe Today. Retrieved 14 May 2020.
External links
[edit]- C/2019 Y1 at the JPL Small-Body Database
- TheSkyLive Archived 7 June 2020 at the Wayback Machine Comet C/2019 Y1 (ATLAS)
- astro.vanbuitenen.nl 2019Y1
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