 | |
| Discovery | |
|---|---|
| Discovered by | Near-Earth Asteroid Tracking 1.2-m reflector at Haleakala[1] |
| Discovery date | March 28, 2004 |
| Designations | |
| 2004 F3 | |
| Orbital characteristics | |
| Epoch | 2008-Jan-26 (JD 2454491.5)[2] |
| Aphelion | 5.171 AU (Q) |
| Perihelion | 2.867 AU (q) |
| Semi-major axis | 4.019 AU (a) |
| Eccentricity | 0.2865 |
| Orbital period | 8.06 yr |
| Inclination | 15.98° |
| Last perihelion | 2021-Feb-22[3] 2013-Jan-28[4] 2005-Jan-04[4] |
| Next perihelion | 2029-Oct-28[5] |
246P/NEAT is a periodic comet discovered on 2004 March 28 by Near-Earth Asteroid Tracking (NEAT) using the 1.2-metre (47 in) reflector at Haleakala.[1] It was given the permanent number 246P on 2011 January 14.[6]
It is a Quasi-Hilda comet.[7] Due to perturbations by Jupiter, the 2005, 2013 and 2021 perihelion passages will be closer to the Sun.[8] The comet is observable all through its orbit.[8]
References[edit]
- ^ a b "IAUC 8313: C/2004 F2; P/2004 F3". IAU Central Bureau for Astronomical Telegrams. 2004-03-29. Retrieved 2012-07-31.
- ^ "JPL Small-Body Database Browser: 246P/NEAT" (last observation: 2012-07-24; arc: 8.48 years). Jet Propulsion Laboratory. Retrieved 2012-07-31.
- ^ "246P/NEAT Orbit". Minor Planet Center. Retrieved 2014-06-20.
- ^ a b Syuichi Nakano (2012-06-08). "246P/NEAT (NK 2273)". OAA Computing and Minor Planet Sections. Retrieved 2012-07-31.
- ^ "Horizons Batch for 246P/NEAT on 2029-Oct-28" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2021-09-17. (JPL#212/Soln.date: 2021-Sep-04)
- ^ "IAUC 9192: C/2011 A2; 246P". IAU Central Bureau for Astronomical Telegrams. 2011-01-14. Retrieved 2012-07-31.
- ^ Toth, I. (March 2006). "The quasi-Hilda subgroup of ecliptic comets - an update". Astronomy and Astrophysics. 448 (3): 1191–1196. Bibcode:2006A&A...448.1191T. doi:10.1051/0004-6361:20053492.
- ^ a b Seiichi Yoshida (2010-11-13). "246P/NEAT". Seiichi Yoshida's Comet Catalog. Retrieved 2012-07-31.
External links[edit]
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 246P/NEAT – Seiichi Yoshida @ aerith.net
- Elements and Ephemeris for 246P/NEAT – Minor Planet Center
- 246P/NEAT at the Minor Planet Center's Database
- 246P/NEAT – Kazuo Kinoshita (2011 Dec. 22)
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