| Discovery | |
|---|---|
| Discovered by | A. Maury G. Attard |
| Discovery date | 2021-05-09 |
| Orbital characteristics | |
| Observation arc | 124 days |
| Perihelion | 1.741 AU[1] |
| Eccentricity | 0.934 |
| Orbital period | 135±2 years |
| Inclination | 92.72° |
| Last perihelion | 19 February 2021 |
| Next perihelion | early 2154[2] |
C/2021 J1 (Maury-Attard) is a Halley-type comet discovered on May 9, 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]
References
[edit]- ^ a b "JPL Small-Body Database Browser: C/2021 J1 (Maury-Attard)". Jet Propulsion Laboratory. Retrieved September 30, 2021.
- ^ a b "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 October 1, 2021. Retrieved June 22, 2022. (JPL#4 / Soln.date: 2022-Feb-03)
- ^ "ALPO COMET NEWS FOR MAY 2021". Cloudy Nights. Retrieved July 13, 2021.
- ^ "New Comet C/2021 J1 (Maury-Attard)". Comet Observation Database. Archived from the original on July 30, 2021. Retrieved July 13, 2021.
- ^ a b Feldmann, Jean-Baptiste (June 7, 2021). "C/2021 J1 Maury-Attard, la comète française inespérée". CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel. Retrieved July 13, 2021.
- ^ "MAP history and description". San Pedro de Atacama Celestial Explorations. Retrieved July 13, 2021.
2021 in space | ||
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| Space probe and telescope launches  |
|    |
| Impact events | ||
| Selected NEOs | ||
| Exoplanets |
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| Discoveries |
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| Comets | ||
| Space exploration |
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Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction