United States Naval Observatory (USNO)

The United States Naval Observatory performs an essential scientific role for the United States, the Navy, and the Department of Defense. Its mission includes determining the positions and motions of the Earth, Sun, Moon, planets, stars and other celestial objects; providing astronomical data; determining precise time; measuring the Earth's rotation; and maintaining the Master Clock for the United States. Observatory astronomers formulate the theories and conduct the relevant research necessary to improve these mission goals. This astronomical and timing data, essential for accurate navigation and the support of communications on Earth and in Space, is vital to the Navy and Department of Defense. It is also used extensively by other agencies of the government, industry and the public at large.

The Observatory consists of four Scientific Departments: Astrometry, Astronomical Applications, Earth Orientation, and Time Service. Each Department is responsible for specific products and services tailored to their end-users within both the DoD and civilian worlds.

The Naval Observatory's Nautical Almanac Office computes and prepares the vital annual U.S. navigational publications, the Air Almanac and the Nautical Almanac. In addition, they carry on the essential research work of deriving improved values of the fundamental astronomical elements and embodying them in new tables of the celestial motions, publishing the Astronomical Phenomena and the Astronomical Almanac. These publications are produced in cooperation with Her Majesty's Nautical Almanac Office, United Kingdom Hydrographic Office.

To learn more about the U.S. Naval Observatory, visit their website.

40 items
The Air Almanac 2017 (PDF eBook)

The Air Almanac 2017 (PDF eBook)

By: US Department of Defense, Navy, Nautical Almanac Office

GPO Stock # 008-300-00091-7 ISBN:

The Air Almanac contains the astronomical data required for air celestial navigation. The CD-ROM contains the same data found in the previously published book.  It provides the following data tabulated at 10-minute intervals to a...

Price: $0.00

The Air Almanac 2017 (CD-ROM)

By: Defense Dept., Navy, Naval Observatory, Nautical Almanac Office

GPO Stock # 008-054-00249-8 ISBN: 9780160932458

Updated edition -- Current Year-- Air Almanac 2016 --CD-ROM format -- can be found here: https://bookstore.gpo.gov/products/sku/008-054-00240-4

The Air Almanac contains the astronomical...

Price: $28.00

The Nautical Almanac for the Year 2017

By: Defense Dept., Navy, Nautical Almanac Office

GPO Stock # 008-054-00248-0 ISBN: 9780160932137

Safer Seas from U.S. and U.K. Naval Collaboration

U.S. Naval Observatory and Her Majesty’s Nautical Almanac Office collaborate to compute, from fundamental astronomical reference data, the position, brightness, and other...

Price: $48.00
The Astronomical Almanac For The Year 2017

The Astronomical Almanac For The Year 2017

By: Defense Dept., Navy, Nautical Almanac Office

GPO Stock # 008-054-00247-1 ISBN: 9780707741666

Official publication prepared jointly with Her Majesty's Nautical Almanac Office of the United Kingdom Hydrographic Office and the United States Naval Observatory's Nautical Almanac Office. Designed in consultation with other astronomers of many...

Price: $49.00
Astronomical Phenomena for the Year 2018

Astronomical Phenomena for the Year 2018

By: Defense Dept., Navy, Nautical Almanac Office

GPO Stock # 008-054-00246-3 ISBN: 9780160930201

U.S. and United Kingdom Nautical Offices Jointly Prepare Yearly to Provide Current and Accurate Astronomical Data

Official publication prepared jointly with Her Majesty's Nautical Almanac Office of the United Kingdom...

Price: $14.00
Astronomical Phenomena for the Year 2017 (PDF eBook)

Astronomical Phenomena for the Year 2017 (PDF eBook)

By: US Department of Defense, Navy, Nautical Almanac Office

GPO Stock # 008-300-00086-1 ISBN: 9780160928789

This small PDF "booklet" contains general interest material preprinted from The Astronomical Almanac. The download version contains the same data found in the printed booklet.  It includes such things as: dates for equinoxes, solstices, phases of...

Price: $0.00
The Air Almanac for the Year 2016 (PDF eBook)

The Air Almanac for the Year 2016 (PDF eBook)

By: U.S. Department of Defense, Navy, Nautical Almanac Office

GPO Stock # 008-300-00085-2 ISBN: 9780160928772

The Air Almanac contains the astronomical data required for air celestial navigation. The download-version contains the same data found on the CD-ROM, but in a single bookmarked PDF.  It provides the following data tabulated at 10-minute...

Price: $0.00
Air Almanac 2016 (CD-ROM)

Air Almanac 2016 (CD-ROM)

By: Defense Dept., Navy, Nautical Almanac Office

GPO Stock # 008-054-00245-5 ISBN: 9780160927720

Provides the following data tabulated at 10-minute intervals to a precision of 1 arcminute: the Greenwich hour angle and declination of the Sun, Moon, and three navigational planets; the Greenwich hour angle of Aries; rise and set times of the...

Price: $28.00
The Air Almanac 2015 (PDF eBook)

The Air Almanac 2015 (PDF eBook)

By: US Department of Defense, Navy, Nautical Almanac Office

GPO Stock # 008-300-00069-1 ISBN: 9780160927713

The Air Almanac contains the astronomical data required for air celestial navigation. The book provides the following data tabulated at 10-minute intervals to a precision of 1 arcminute: the Greenwich hour angle and declination of the...

Price: $0.00
Astronomical Almanac for the Year 2016

Astronomical Almanac for the Year 2016

By: Defense Dept., Navy

GPO Stock # 008-054-00242-1 ISBN: 9780707741581

Official publication prepared jointly with Her Majesty's Nautical Almanac Office of the United Kingdom Hydrographic Office and the United States Naval Observatory's Nautical Almanac Office. Designed in consultation with other astronomers of many...

Price: $49.00
40 items