What is the formula for calculating the Ascendant?

  • Context: Graduate 
  • Thread starter Thread starter Jerky Jesse
  • Start date Start date
  • Tags Tags
    Formula
Click For Summary
SUMMARY

The formula for calculating the Ascendant, as discussed, involves specific mathematical operations using trigonometric functions. The provided code snippet utilizes double precision variables in a programming environment, calculating the Ascendant based on a given date and time (December 31, 1998, at 13:15 in Brussels, Belgium). The final result of the calculation yields an Ascendant of 68.28333 degrees. The discussion highlights the need for potential quadrant adjustments after the initial calculation to ensure accurate results.

PREREQUISITES
  • Understanding of trigonometric functions (sine, cosine, tangent)
  • Familiarity with programming concepts, particularly in a language that supports double precision calculations
  • Knowledge of astronomical terms such as RAMC (Right Ascension of the Mean Sun) and ecliptic coordinates
  • Basic understanding of coordinate systems and conversions in astronomy
NEXT STEPS
  • Research the mathematical principles behind calculating the Ascendant in astrology
  • Learn about quadrant adjustments in trigonometric calculations
  • Explore the use of libraries for astronomical calculations in programming languages like Python or Java
  • Study the implications of latitude and ecliptic tilt on astrological computations
USEFUL FOR

Astronomy enthusiasts, astrologers, software developers working on astrological applications, and anyone interested in mathematical calculations related to celestial events.

Jerky Jesse
Messages
1
Reaction score
0
I'm trying to figure out how to calculate the Ascendant for a programming application but I have little experience with this level of math.

My formula is this:

1998 December 31st 13:15 Brussels, Belgium.

double d2R = M_PI / 180; double R2d = 180 / M_PI; double latitude = 50.8503*d2R; double RAMC=287.8256496*d2R; double ecliptic=23.4392911*d2R;

double ASC = 1/MathArctan (- ( (MathTan (latitude ) * MathTan (ecliptic)) + (MathSin (RAMC) * MathCos (ecliptic)) ) / MathCos(RAMC));

double ascendant=ASC*R2d; which equals 68.28333 degrees.

Do I have to do some kind of conversion after using the formula? I think it may have to do with quadrants but I'm not sure...

Any leads would be very appreciated. I can't use tables or lists of ascendants to calculate this.
 
Astronomy news on Phys.org

Similar threads

Graduate Understanding NOAA and Naval Observatory's Solar Calculations
  • · Replies 16 ·
Replies
16
Views
7K
Calculating Velocity and Distance for Ascending Double Cone on Rails
  • · Replies 52 ·
2
Replies
52
Views
6K
MHB Can WGS-84 Coordinates be Used to Calculate Closing Speeds for Airplanes?
  • · Replies 3 ·
Replies
3
Views
2K
Looking for equation/formula for calculating boomerang trajectory based on few variables for game
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What formulas do I need to solve the above problems?
  • · Replies 5 ·
Replies
5
Views
7K
Average distance in latitude/longitude cell using Haversine formula
  • · Replies 8 ·
Replies
8
Views
3K
What is the formula for calculating force in a crank and slider mechanism?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Compressible choked gas flow through an orifice -- Excel formula
  • · Replies 1 ·
Replies
1
Views
4K
What Formulae Calculate Force Delivery in a Whipping Motion?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate I have lots of questions on physics
  • · Replies 10 ·
Replies
10
Views
3K