Discovery | |
---|---|
Discovered by | Bouchy et al.[1] |
Discovery site | ![]() |
Discovery date | December 9, 2008[1] |
Doppler spectroscopy | |
Orbital characteristics | |
Apastron | 4.44 AU (664,000,000 km) |
Periastron | 1.56 AU (233,000,000 km) |
3.00 AU (449,000,000 km)[2] | |
Eccentricity | 0.48 ± 0.05[2] |
2172 ± 158[2] d 5.947 y | |
Average orbital speed | 15.1 |
2452154 ± 194[2] | |
-30 ± 13[2] | |
Star | HD 181433 |
HD 181433 d is an extrasolar planet located approximately 87 light years away[3] in the constellation of Pavo, orbiting the star HD 181433. This planet has a minimum mass of 0.54 Jupiter mass and takes 2172 days to orbit the star. The average orbital distance is 3.00 AU. At periastron distance, it will have distance from the star similar to Mars’ distance from the Sun at 1.56 AU. At apastron, the distance is 4.44 AU. These corresponds to the orbital eccentricity of 0.48.[2]
References
[edit]- ^ a b Bouchy, François; Mayor, Michel; Lovis, Christophe; Udry, Stéphane; Benz, Willy; Bertaux, Jean-Loup; Delfosse, Xavier; Mordasini, Christoph; Pepe, Francesco; Queloz, Didier; Ségransan, Damien (2009). "The HARPS Search for Southern Extra-solar Planets. XVII. Super-Earth and Neptune-mass Planets in Multiple Planet Systems HD 47186 and HD 181433". Astronomy and Astrophysics. 496 (2): 527–31. arXiv:0812.1608. Bibcode:2009A&A...496..527B. doi:10.1051/0004-6361:200810669. S2CID 117778593.
- ^ a b c d e f Schneider, J. "Notes for Planet HD 181433 d". Extrasolar Planets Encyclopaedia. Retrieved 2008-12-15.
- ^ van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. Retrieved 2008-12-15.
External links
[edit]- "HD 181433 d". Exoplanets. Archived from the original on 2012-03-18. Retrieved 2008-12-15.
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