Astronomical Almanac

The Astronomical Almanac application calculates the exact position of objects in the solar system, their sunrise and sunset for a given time and place. The time of the onset of the lunar phases and lunar days is also calculated.
To improve the accuracy of determining the location of the observer, geographical maps are used.
Calculations are made in the date range from 3000 BC. until 3000 A.D.
The program uses the Steve Moshier algorithms.
Designed for astronomical observations.
The following parameters are calculated for celestial objects:
- UT, TDT, Julian Day
- Sideral time, Delta T
Ecliptic:
- Longitude
- Latitude
- Radius vector
- Geocentric distance
- Elongation from the Sun
Visible geocentric:
- Longitude
- Zodiac
- Right ascension
- declination
- constellation
Astrometric:
- J2000, Right Climb
- J2000 Declination
- B1950, right ascension
- B1950 Declination
Topocentric:
- height
- Azimuth
- Right ascension
- declination
Properties:
- Equatorial diameter
- Visible value
- phase
Miscellaneous:
- time of light
- nutation
- Aberration
- Parallax
- sunrise
- Meridian
- sunset
- Visible time

Category : Books & Reference

Reviews (8)

Ser. G. Apr 17, 2022

Fulfills all my needs except for having an arrow to move forward or backward one day at a time .

Ian. s. Jan 17, 2022

Great app. Perhaps could show the local time, zone and geo coordinates on the 'shared' HTML page output?

Bri. K. Oct 22, 2020

Incredibly accurate and useful app. Now supports Daylight Saving Time.

Ros. R. Nov 14, 2020

This app my not sell properly don't like to be disturb with another application adviseterment And also not complete with Star Almanac data And also not include additional data such Local Hour Angle

A. G. u. Nov 13, 2018

Simply brilliant. A huge thank you to the developer for this amazing app!!!

Dua. S. Feb 11, 2018

Very handy. Fast and accurate. Good for a quick check on where solar system bodies are.

Dav. B. Mar 12, 2017

Very fast calculations. Super accurate results. Not restricted in time: one can go way back and forward. It remembers the latest settings so you can make alterations quickly. Most impressive app!!!

Bru. B. Jun 27, 2017

Not a bad app, just beginning to use it. But right off I wish it would give the 3 twilight times for the sun and moon phase name, such as "waxing crescent." Even show the moon shape too. Of course, since it gives # of days before a major phase event, in today's case the 1st quarter (3.? Days to go), then it's easy enough to determine the current phase name.