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According to JPL Website, "the Jet Propulsion Lab is a NASA field center managed by the California Institute of Technology." However, "unlike other NASA centers, which are staffed by government civil servants, JPL is managed for NASA by Caltech under a contractual arrangement begun in 1958 and renewed every five years. Thus, JPLers are Caltech ...
In 1971 Fred collaborated with Jack Hatfield, a programmer at JPL, to write an enhanced version of RETRIEVE which became the JPLDIS project. JPLDIS evolved into a file management program written in FORTRAN, running on a UNIVAC 1108 mainframe. Hatfield published two papers entitled "Jet Propulsion Laboratory Data Information System (JPLDIS)".
JPL Horizons On-Line Ephemeris System provides access to key Solar System data and flexible production of highly accurate ephemerides for Solar System objects. Osculating elements at a given epoch (such as produced by the JPL Small-Body Database ) are always an approximation to an object's orbit (i.e. an unperturbed conic orbit or a " two-body ...
The 114 Megabyte ephemeris files include the orientation of the Moon. It spans the years 1550–2650. JPL started transitioning to DE440 in early April 2021. Supplemental versions are also available which include the planetary geometric center of Mars as well as Mars' barycenter. [20] DE441 [19] was created in June 2020. This ephemeris is ...
Additionally, JPL is home to the JPL-RPIF (Jet Propulsion Laboratory – Regional Planetary Image Facility) which is chartered as a repository for all robotic spacecraft hard-copy data and thus provides a valuable resource to NASA funded science investigators, and an important conduit for the distribution of NASA generated materials to local ...
Lists of filename extensions include: List of filename extensions (0–9) List of filename extensions (A–E) List of filename extensions (F–L) List of filename extensions (M–R) List of filename extensions (S–Z)
CS – File extension for C-Sharp (C#) files; DAA – DAA: Closed-format, Windows-only compressed disk image; DEB – Debian install package; DMG – an Apple compressed/encrypted format; DDZ – a file which can only be used by the "daydreamer engine" created by "fever-dreamer", a program similar to RAGS, it's mainly used to make somewhat ...
The most common filename extensions for files employing JPEG compression are .jpg and .jpeg, though .jpe, .jfif and .jif are also used. [46] It is also possible for JPEG data to be embedded in other file types – TIFF encoded files often embed a JPEG image as a thumbnail of the main image; and MP3 files can contain a JPEG of cover art in the ...