Credits
Illustration: NASA, ESA, and Z. Levay (STScI);Science: NASA, ESA, J.-Y. Li (University of Maryland, College Park), and L. McFadden (NASA/GSFC)
| About The Object | |
|---|---|
| Object Name | Vesta, 4 Vesta |
| Object Description | Asteroid |
| Distance | The semi-major axis of Vesta's orbit about the Sun is 2.36 astronomical units (AU) or roughly 219 million miles (353 million kilometers). |
| Dimensions | Vesta has a mean diameter of approximately 330 miles (530 kilometers). The object has a 354-mile (570-km) diameter at the equator and a slightly smaller diameter of 288-miles (464-km) pole-to-pole. |
| About The Data | |
| Data Description | This image was created from HST data from proposal : J.-Y. Li (University of Maryland, College Park), L. McFadden (NASA/GSFC), P. Thomas (Cornell University), C. Russell (University of California, Los Angeles), M. Mutchler (STScI), and M. Rayman, C. Raymond, and S. Weinstein-Weiss (JPL/Caltech). |
| Instrument | HST>WFC3/UVIS |
| Exposure Dates | February 25 and 28, 2010, Exposure Time: 20 minutes |
| Filters | F373N (373 nm) and F469N (469 nm) |
| About The Image | |
| Color Info | These images are composites of separate exposures made by the WFC3 instrument on the Hubble Space Telescope (HST). Each filter was used to sample a narrow wavelength range. The composite colors result from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Yellow/gold: F469N (469 nm) Cyan: F373N (373 nm) |
| Compass Image |  |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
