| Discovery | |
|---|---|
| Discovered by | Boris Skoritchenko & Doug George |
| Discovery date | December 17, 1989 |
| Designations | |
| 1990 VI, 1989e1 | |
| Orbital characteristics | |
| Aphelion | ~3140 AU[1] |
| Perihelion | 1.569172 |
| Semi-major axis | ~1571 AU[1] |
| Eccentricity | 1.000308 |
| Orbital period | ~62,000 yr[1] |
| Inclination | 59.3660 |
| Last perihelion | April 11, 1990 |
| Next perihelion | unknown |
Comet Skorichenko–George (sometimes spelled Scorichenko–George) is also designated C/1989 Y1, 1990 VI, and 1989e1. It was discovered on December 17, 1989 by Doug George of Kanata (near Ottawa), Ontario, Canada, and Soviet astronomer Boris Skoritchenko (Mezmay, Krasnodar Krai). Skoritchenko was using 8×20 binoculars,[2] whilst George was using a 16" reflector and had searched for 65 hours. The comet was magnitude 10.5 in the northern evening sky. It passed its perihelion on April 11, 1990 at a distant 1.57 AU,[3] and remained in the Earth's evening sky through April 1990, at magnitude 9–10.
C2 emission bands were observed in the comet Skorichenko-George.
References
[edit]- ^ a b c Horizons output. "Barycentric Osculating Orbital Elements for Comet C/1989 Y1 (Skorichenko-George)". Retrieved 2011-02-04. (Solution using the Solar System Barycenter and barycentric coordinates. Select Ephemeris Type:Elements and Center:@0)
- ^ V. Korneyev's home page (in Russian)
- ^ JPL Small-Body Database Browser
External links
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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