The roll angle is given by the position angle of the axis, which is the angle of the Moon's north pole relative to celestial north. It appears to roll back and forth around the sub-Earth point.
The Moon is subject to other motions as well. The sub-Earth point is also the apparent center of the Moon's disk and the location on the Moon where the Earth is directly overhead. The sub-Earth point gives the amount of libration in longitude and latitude.
The word comes from the Latin for "balance scale" (as does the name of the zodiac constellation Libra) and refers to the way such a scale tips up and down on alternating sides. When a month is compressed into 24 seconds, as it is in this animation, our changing view of the Moon makes it look like it's wobbling. Because of the tilt and shape of its orbit, we see the Moon from slightly different angles over the course of a month. The Moon always keeps the same face to us, but not exactly the same face. The pummeled, craggy landscape thrown into high relief at the terminator would be impossible to recreate in the computer without global terrain maps like those from LRO. This is especially evident in the long shadows cast near the terminator, or day-night line. Its laser altimeter ( LOLA) and camera ( LROC) are recording the rugged, airless lunar terrain in exceptional detail, making it possible to visualize the Moon with unprecedented fidelity. Lunar Reconnaissance Orbiter ( LRO) has been in orbit around the Moon since the summer of 2009. Until the end of 2021, the initial Dial-A-Moon image will be the frame from this animation for the current hour. The animation archived on this page shows the geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2021, at hourly intervals. The data in the table for the entire year can be downloaded as a JSON file or as a text file.
#QUICKMAP MOON DOWNLOAD DOWNLOAD#
Hover over the image to reveal the animation frame number, which can be used to locate and download the corresponding frame from any of the animations on this page, including unlabeled high-resolution Moon images. The Public has access to all products already delivered to the NASA/PDS by the active missions.See also the Dial-A-Moon for the May 26 total lunar eclipse.Ĭlick on the image to download a high-resolution version with feature labels and additional graphics. The Science Team members can have immediate access to all data for early analysis and cross validation. Mission Proven - QuickMap directly supports the NASA LRO/LROC, MRO/CRISM, MESSENGER missions. End-user can create interactive 3D flyby or simulate its own traverse (with terrain shows over time).best TerraiHeight info is assembled from regional and global topo models Synthetic Lunar Image Modeling capabilities, based on QuickMap TerrainShadows 2D & 3D.Advanced search/display of LROC/NAC images, e.g.Supports both stacked map and grid views of layers (with active synchronization).Loading of user-supplied data: GeoTiff/GeoJson/ ….Extraction of cartographic sub-cube with all geophysical parameters of interest.Support layer-based algebraic expression.Extraction of numeric data along a point, path, or polygon.Interactive visualization of numeric data layers (most layers in QuickMap are geophysical parameters).Rapid data ingestion allowing to incorporate new data.QuickMap has similarities to other data viewers, but it differs by exposing functionality such as: Ability to validate products and fuse data across missions and across serversįor commercial applications it can be used by aerial remote sensing service providers that fly sensors in either planes or drones supporting specific customer needs.master target collection status and master target mosaics Location overlays: nomenclature, recent feature images, sites of interest.Instrument coverage views (where observations have taken place).Digital Elevation Models & Satellite position (SPICE kernels) & automatic tracking of present position.Global and regional mosaics as the result of specific data collection campaigns.It leverages on ACT's PIPE architecture, for capabilities of data ingestion, publishing and analysis (which has been proven over many NASA/NOAA/DoD Missions).įor NASA satellite missions, and when used in conjunction with PIPE/MSHELL, it provides mission progress monitoring in the form of:
#QUICKMAP MOON DOWNLOAD ARCHIVE#
Designed with the end-user in mind, QuickMap offers seamless access to numeric data layers, without the tedium of handling file format details and data ingestion and archive structures. ACT-REACT-QuickMap™ provides an easy-to-use yet powerful web interface for map related products.
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