Theta Tauri (star)
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| θ¹ Tauri A (77 Tauri A) | |
| |
| Spectral | K0 IIIb |
| Type | Giant |
| Multiple | Binary (Double) |
| Luminosity | 66 LSol |
| Absolute magnitude | |
| Mag Terra | 3.84 |
| Temperature | 4930° K |
| Mass | 2.5 MSol |
| Radius | 11.2 RSol |
| Companion | θ¹ Tauri B (77 Tauri B) |
| θ¹ Tauri B (77 Tauri B) | |
|
| |
| Spectral | F8 V |
| Type | Main Sequence |
| Multiple | Binary Companion |
| Luminosity | 2.0 LSol |
| Absolute magnitude | |
| Mag Terra | 7.0 |
| Temperature | 6200° K |
| Mass | 1.2 MSol |
| θ² Tauri A (78 Tauri A) | |
|
| |
| Spectral | A7 III-IV |
| Type | Subgiant/Giant |
| Multiple | Binary (Double) |
| Luminosity | 69 LSol |
| Absolute magnitude | |
| Mag Terra | 3.4 |
| Temperature | 7880° K |
| Mass | 2.4 MSol |
| Radius | 3.9 RSol |
| Companion | θ² Tauri B (78 Tauri B) |
| θ² Tauri B (78 Tauri B) | |
|
| |
| Spectral | A? V |
| Type | Main Sequence |
| Multiple | Binary Companion |
| Luminosity | LSol |
| Absolute magnitude | |
| Mag Terra | 6.0 |
| Temperature | ° K |
| Mass | 1.8 MSol |
| Radius | 3.0 RSol |
The star Theta Tauri (otherwise known as Phaesula) is a double star as seen from Terra; however, the two components (θ¹ or 77 Tauri and θ² or 78 Tauri) are not gravitationally bound and are separated by approximately 1.2pc.
- The stars comprising Theta Tauri are members of the Hyades Cluster.
Description (Specifications)[edit]
θ¹ Tauri is itself a binary star whose primary is a yellow-orange giant star of spectral type K0.
- θ¹ Tauri has a companion (θ¹ Tauri B) averaging 10.3AU from the primary, θ¹ Tauri A.
- θ¹ Tauri B takes 16.3 years to make a complete orbit, a notable eccentricity taking it from 16AU at apastron to 4.4AU at periastron.
- The θ¹ Tauri star system is approximately 47.3pc from Terra, and is located in a Spinrimward/Rimward direction from Terra at bearing 180.3o Galactic Longitude and -22.0o South Galactic Latitude.
θ² Tauri is itself a binary star whose primary is a blue-white giant star of spectral type A7, and is classified as a Delta Scuti type variable star.
- θ² Tauri has a companion (θ² Tauri B) at least 2AU distant from the primary, θ² Tauri A.
- θ² Tauri B completes an orbit about θ² Tauri A once every 141 days at a mean distance of 0.86AU, varying due to orbital eccentricity.
- The θ² Tauri star system is approximately 46.1pc from Terra, and is located in a Spinrimward/Rimward direction from Terra at bearing 180.3o Galactic Longitude and -22.0o South Galactic Latitude.
History & Background (Dossier)[edit]
θ² Tauri is the primary star of the world Theta Tauri/Narmada (Aldebaran 1731).
Image Repository[edit]
TravellerMap (T5SS):
[1]
References & Contributors (Sources)[edit]
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This page uses content from Wikipedia. The original article was at Theta_Tauri. The list of authors can be seen in the page history. The text of Wikipedia is available under the Commons Attribution-ShareAlike 3.0 Unported License. |
This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.
- EXTERNAL LINK: SIMBAD @ University of Strasbourg: [2]
- EXTERNAL LINK: STARS (University of Illinois - Prof. Jim Kaler): [3]
- Traveller Wiki Editorial Team
- Author & Contributor: WHULorigan
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science