function calculateTransitAspect() {
var natal = parseFloat(document.getElementById('natalDegree').value);
var transit = parseFloat(document.getElementById('transitDegree').value);
var orb = parseFloat(document.getElementById('orbValue').value);
var resultDiv = document.getElementById('transitResult');
var title = document.getElementById('aspectTitle');
var desc = document.getElementById('aspectDescription');
var breakdown = document.getElementById('degreeBreakdown');
if (isNaN(natal) || isNaN(transit) || isNaN(orb)) {
alert("Please enter valid numerical degrees.");
return;
}
// Normalize to 360
natal = natal % 360;
transit = transit % 360;
// Calculate angular distance
var diff = Math.abs(natal – transit);
if (diff > 180) {
diff = 360 – diff;
}
var aspectFound = "No Major Aspect";
var interpretation = "These two positions do not form a major Ptolemaic aspect within your chosen orb. The transit may be minor or building.";
var aspects = [
{ name: "Conjunction", angle: 0, desc: "Merging of energies. This is a powerful time of new beginnings and focus in the house being transited." },
{ name: "Sextile", angle: 60, desc: "A harmonious window of opportunity. It requires conscious effort to reap the benefits of this transit." },
{ name: "Square", angle: 90, desc: "Dynamic tension and challenges. This aspect demands action and forces you to overcome obstacles." },
{ name: "Trine", angle: 120, desc: "Flowing ease and luck. Talents and support come naturally during this transit period." },
{ name: "Opposition", angle: 180, desc: "A tug-of-war between two areas of life. It usually manifests as relationship dynamics or external pressure." }
];
var closestAspect = null;
var minDeviation = 999;
for (var i = 0; i < aspects.length; i++) {
var deviation = Math.abs(diff – aspects[i].angle);
if (deviation <= orb && deviation < minDeviation) {
minDeviation = deviation;
closestAspect = aspects[i];
}
}
if (closestAspect) {
aspectFound = closestAspect.name;
interpretation = closestAspect.desc + " (Orb: " + minDeviation.toFixed(2) + "°)";
}
title.innerHTML = "Aspect: " + aspectFound;
desc.innerHTML = interpretation;
breakdown.innerHTML = "Angular Distance: " + diff.toFixed(2) + "° | Target: " + (closestAspect ? closestAspect.angle : "None") + "°";
resultDiv.style.display = 'block';
}
Understanding the Astro Seek Transit Chart
A transit chart is one of the most vital tools in evolutionary and predictive astrology. While your natal chart represents the "blueprint" of your soul at the moment of birth, the transit chart represents where the planets are currently located in the sky. When a transiting planet forms an aspect (a specific angular relationship) with a planet in your natal chart, it "activates" that energy in your life.
How to Use the Transit Calculator
To use this calculator effectively, you need to know the zodiacal degree of your natal planet and the current degree of the transiting planet. In astrology, the 360-degree circle is divided into 12 signs of 30 degrees each:
Aries: 0° – 29°
Cancer: 90° – 119°
Libra: 180° – 209°
Capricorn: 270° – 299°
Simply convert your planet's sign and degree into a total degree (0-360) and enter it above. For example, if your Natal Moon is at 15° Leo, you would enter 135° (120° for the start of Leo + 15°).
Major Transit Aspects Explained
The "energy" of a transit is defined by the mathematical angle between the transiting planet and your natal planet:
Aspect
Angle
Nature
Conjunction
0°
Intense, Concentrated
Sextile
60°
Opportunities, Support
Square
90°
Friction, Action, Growth
Trine
120°
Ease, Harmony, Flow
Opposition
180°
Polarity, Realization
What is an Orb?
In astrology, an aspect doesn't have to be mathematically perfect to be felt. The "Orb" is the range of influence. For example, if Saturn is at 12° Aquarius and your Natal Sun is at 15° Aquarius, they are in a 3° Conjunction. Most astrologers use an orb of 5° to 8° for transits. A smaller orb means the transit is more intense and exact.
Example Calculation
Suppose you want to know if Transiting Jupiter is hitting your Natal Venus:
Natal Venus: 10° Taurus (which is 40° on the 360 wheel).
Transit Jupiter: 12° Virgo (which is 162° on the 360 wheel).
Calculation: 162 – 40 = 122°.
Result: This is a Trine (120°) with a 2° orb. You are likely experiencing a period of social ease, financial flow, or romantic harmony!