HD 100546
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| Observation data Epoch J2000.0[1] |
|
|---|---|
| Constellation (pronunciation) |
Musca |
| Right ascension | 11h 33m 25.4408s[1] |
| Declination | -70° 11′ 41.239″[1] |
| Apparent magnitude (V) | 6.698[1] |
| Characteristics | |
| Spectral type | B9Vne[1] |
| Details | |
| Age | >10*10^6[2] years |
| Astrometry | |
| Proper motion (μ) | RA: -38.78[1] mas/yr Dec.: -0.05[1] mas/yr |
| Parallax (π) | 9.67[1] ± 0.60[1] mas |
| Distance | 337.3[3] ly (103.4[3] pc) |
| Other designations | |
| Extrasolar planet | List of extrasolar planets | ||
|---|---|---|---|
| Parent star | |||
| Star | HD 100546 | ||
| Right ascension | (α) | 11h 33m 25.4408s[1] | |
| Declination | (δ) | -70° 11′ 41.239″[1] | |
| Spectral type | B9Vne[1] | ||
| Physical characteristics | |||
| Mass | (m) | ~20[4] MJ | |
| Orbital elements | |||
| Semimajor axis | (a) | 6.5[4] AU | |
HD 100546 is a star 337.3 LY from Earth. It is orbited by an approximately 20 Mj planet at 6.5 AU.[4]
Contents |
[edit] HD 100546 B
Evidence for a planetary companion to HD 100546 was gathered using the UVES echelle spectrograph at the VLT in Chile.[4] This confirms other data indicating a planetary companion. The planets size puts it near the border between a giant planet and a brown dwarf.[4]
[edit] Protoplanetary material
Spectroscopic analysis of mid-IR data taken from OSCIR on the 4 m Blanco Telescope at Cerro Tololo Inter-American Observatory indicates the presence of a small particles (10 - 18 μm) containing silicates.[2] The material is found at distances out to 17 AU away from the star and has a temperature of approximately 227 K.[2]
[edit] External links
- Astonomy picture of the day - May 2, 2001
[edit] Further reading
- Butler, P.; Wright, J.; Marcy, G.; Fischer, D.; Vogt, S.; Tinney, Ch.; Jones, H.; Carter, B.; Penny, A (March 2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (505): 505–522. doi:.
- Ecuvillon, A.; Israelian, G.; Pont, F.; Santos, N.; Mayor, M. (August 2006). "Kinematics of planet-host stars and their relation to dynamical streams in the solar neighbourhood". Astronomy and Astrophysics 461 (171).
- Jones, B.; Sleep, P.; Underwood, D. (June 2006). "Habitability of known exoplanetary systems based on measured stellar properties". The Astrophysical Journal 649 (1010).
- Mandell, A.; Raymond, S.; Sigurdsson, S (Sep 2006). "Formation of Earth-like Planets During and After Giant Planet Migration". The Astrophysical Journal 660 (823).
- Marchi, S. (May 2007). "Extrasolar planet taxonomy: a new statistical approach". The Astrophysical Journal 666 (475).
- Nortdstrom, R.; Mayor, M.; Andersen, J.; Holmberg, J; Pont, F.; Jorgenson, B.; Olsen, E.; Udry, S.; Mowlavi, N. "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs.". Astronomy and Astrophysics 419 (989).
- Hedrick, C. H.; Doering, R.; Lee, K.-G.; Sosey, M.; Meixner, M.; Ardila, D. (January 2006). "The Circumstellar Dust Disk of HD 100546". American Astronomical Society 37 (4).
[edit] References
- ^ a b c d e f g h i j k l m SIMBAD Object query: HD 100546.
- ^ a b c Grady, C. A. (December 2001). "The Disk and Environment of the Herbig Be Star HD 100546". The Astronomical Journal 122 (6): 3396–3406. doi:.
- ^ a b The Extrasolar Planets Encyclopaedia.
- ^ a b c d e Acke, B.; van der Ancker; M. (November 2005). "Resolving the disk rotation of HD 97048 and HD 100546 in the [O I] 6300A line: evidence for a giant planet orbiting HD 100546". Astronomy and Astrophysics 449 (267).
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