 | |
| Discovery | |
|---|---|
| Discovered by | Sylvain Julien Victor Arend Fernand Rigaux |
| Discovery date | February 5, 1951 |
| Designations | |
| 1950 VII; 1957 VII; 1964 V; 1971 IV; 1978 III; 1984 XXI; 1991 XVII | |
| Orbital characteristics | |
| Epoch | 2012-Feb-10 (JD 2455967.5) |
| Aphelion | 5.701 AU |
| Perihelion | 1.423 AU |
| Semi-major axis | 3.562 AU |
| Eccentricity | 0.6003 |
| Orbital period | 6.72 a |
| Inclination | 19.04° |
| Last perihelion | 2018-Jul-15[1] October 19, 2011[2][3] February 24, 2005 |
| Next perihelion | 2025-Apr-10[4] |
49P/Arend–Rigaux is a periodic comet in the Solar System.
The comet nucleus is estimated to be 8.48 kilometers in diameter with a low albedo of 0.028.[5]
On 20 December 2058 the comet will pass 0.0867 AU (12,970,000 km; 8,060,000 mi) from Mars.[5]
References
[edit]- ^ MPC
- ^ Seiichi Yoshida (2009-04-07). "49P/Arend-Rigaux". Seiichi Yoshida's Comet Catalog. Retrieved 2010-03-01.
- ^ Syuichi Nakano (2008-05-07). "49P/Arend-Rigaux (NK 1614)". OAA Computing and Minor Planet Sections. Retrieved 2010-03-01.
- ^ "Horizons Batch for 49P/Arend-Rigaux (90000576) on 2025-Apr-10" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Archived from the original on 2022-06-27. Retrieved 2023-07-06. (JPL#K254/3 Soln.date: 2023-Jul-05)
- ^ a b "JPL Small-Body Database Browser: 49P/Arend-Rigaux" (2012-02-03 last obs). Jet Propulsion Laboratory. Archived from the original on 2012-12-12. Retrieved 2012-02-21.
External links
[edit]- 49P/Arend-Rigaux – Seiichi Yoshida @ aerith.net
- Elements and Ephemeris for 49P/Arend-Rigaux – Minor Planet Center
- 49P at Kronk's Cometography
- 49P/Arend-Rigaux at the JPL Small-Body Database
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