C/2021 J1 (Maury–Attard)
 | The topic of this article may not meet Wikipedia's notability guideline for astronomical objects. (November 2025) |
| Discovery | |
|---|---|
| Discovered by | Alain Maury Georges Attard |
| Discovery date | 9 May 2021 |
| Orbital characteristics[1] | |
| Epoch | 27 April 2021 (JD 2,459,331.5) |
| Observation arc | 124 days |
| Number of observations | 106 |
| Aphelion | 51.31 AU |
| Perihelion | 1.741 AU |
| Semi-major axis | 26.53 AU |
| Eccentricity | 0.934 |
| Orbital period | 135±2 years |
| Inclination | 92.719° |
| 88.320° | |
| Argument of periapsis | 147.33° |
| Mean anomaly | 0.479° |
| Last perihelion | 19 February 2021 |
| Next perihelion | ~2154[2] |
| TJupiter | 0.120 |
| Earth MOID | 0.826 AU |
| Jupiter MOID | 2.959 AU |
| Comet total magnitude (M1) | 17.1 |
C/2021 J1 (Maury–Attard) is a Halley-type comet discovered on 9 May 2021, by French amateur astronomers Alain Maury and Georges Attard[3][4] with the MAP (Maury/Attard/Parrott) observation program.[5][6] It is the first comet discovered with the synthetic tracking technique, made possible with the Tycho Tracker commercial software developed by Daniel Parrott.[5] When it was discovered, it had a magnitude of 19.
It has a 124-day observation arc.[1] It came to perihelion on 19 February 2021. The next perihelion will be in early 2154.[2]
See also
[edit]References
[edit]- 1 2 "JPL Small-Body Database Browser: C/2021 J1 (Maury-Attard)". Jet Propulsion Laboratory. Retrieved 30 September 2021.
- 1 2 "Horizons Batch for C/2021 J1 (Maury-Attard) around 2154" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Archived from the original on 2021-10-01. Retrieved 2022-06-22. (JPL#4 / Soln.date: 2022-Feb-03)
- ↑ "ALPO COMET NEWS FOR MAY 2021". Cloudy Nights. Retrieved 13 July 2021.
- ↑ "New Comet C/2021 J1 (Maury-Attard)". Comet Observation Database. Archived from the original on July 30, 2021. Retrieved July 13, 2021.
- 1 2 Feldmann, Jean-Baptiste (7 June 2021). "C/2021 J1 Maury-Attard, la comète française inespérée". futura-sciences.com. Retrieved 13 July 2021.
- ↑ "MAP history and description". San Pedro de Atacama Celestial Explorations. Retrieved 13 July 2021.
External links
[edit]- C/2021 J1 at the JPL Small-Body Database
.png)
2021 in space | ||
|---|---|---|
| Space probe and telescope launches  |
|    |
| Impact events | ||
| Selected NEOs | ||
| Exoplanets |
| |
| Discoveries |
| |
| Comets | ||
| Space exploration |
| |
 | This comet-related article is a stub. You can help Wikipedia by adding missing information. |