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Local Sidereal Time Formula

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Local Sidereal Time is a concept primarily used in astronomy and celestial navigation. It refers to the time measured with respect to the local meridian and the position of the stars. Check FAQs

LST = GST + E long

LST - Local Sidereal Time?GST - Greenwich Sidereal Time?E_long - East Longitude?

Local Sidereal Time Example

With values

With units

Only example

Here is how the Local Sidereal Time equation looks like with Values.

Here is how the Local Sidereal Time equation looks like with Units.

Here is how the Local Sidereal Time equation looks like.

111 = 96 + 15

111° = 96° + 15°

111 = 96 + 15

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Local Sidereal Time Solution

Follow our step by step solution on how to calculate Local Sidereal Time?

FIRST Step Consider the formula

LST = GST + E long

Next Step Substitute values of Variables

∴

LST = 96° + 15°

Next Step Convert Units

∴

LST = 1.6755rad + 0.2618rad

Next Step Prepare to Evaluate

∴

LST = 1.6755 + 0.2618

Next Step Evaluate

∴

LST = 1.93731546971334rad

LAST Step Convert to Output's Unit

∴

LST = 111°

Local Sidereal Time Formula Elements

Variables

Local Sidereal Time

Local Sidereal Time is a concept primarily used in astronomy and celestial navigation. It refers to the time measured with respect to the local meridian and the position of the stars.

Symbol: LST

Measurement: AngleUnit: °

Note: Value can be positive or negative.

Formulas to find Local Sidereal Time

Greenwich Sidereal Time

Greenwich Sidereal Time (GST) is a concept used in astronomy and celestial navigation to measure the rotation of the Earth relative to the stars.

Symbol: GST

Measurement: AngleUnit: °

Note: Value should be greater than 0.

Formulas to find Greenwich Sidereal Time

East Longitude

East Longitude refers to a specific geographical location on the Earth's surface in relation to the prime meridian, which is designated as 0 degrees longitude.

Symbol: E_long

Measurement: AngleUnit: °

Note: Value should be less than 180.

Formulas to find East Longitude

Other formulas in Satellite Orbital Characteristics category

Go Anomalistic Period

T AP = \frac{2 \cdot π}{n}

Go Mean Anomaly

M = E - e \cdot \sin (E)

Go Mean Motion of Satellite

n = \sqrt{\frac{[GM.Earth]}{{a semi}^{3}}}

Go Nominal Mean Motion

n o = \sqrt{\frac{[GM.Earth]}{{a semi}^{3}}}

How to Evaluate Local Sidereal Time?

Local Sidereal Time evaluator uses Local Sidereal Time = Greenwich Sidereal Time+East Longitude to evaluate the Local Sidereal Time, Local Sidereal Time (LST) is the measure of the hour angle of the vernal equinox at a specific location, indicating the position of the Earth relative to the fixed stars, important in astronomy and celestial navigation. Local Sidereal Time is denoted by LST symbol.

How to evaluate Local Sidereal Time using this online evaluator? To use this online evaluator for Local Sidereal Time, enter Greenwich Sidereal Time (GST) & East Longitude (E_long) and hit the calculate button.

FAQs on Local Sidereal Time

What is the formula to find Local Sidereal Time?

The formula of Local Sidereal Time is expressed as Local Sidereal Time = Greenwich Sidereal Time+East Longitude. Here is an example- 6359.832 = 1.67551608191424+0.2617993877991.

How to calculate Local Sidereal Time?

With Greenwich Sidereal Time (GST) & East Longitude (E_long) we can find Local Sidereal Time using the formula - Local Sidereal Time = Greenwich Sidereal Time+East Longitude.

Can the Local Sidereal Time be negative?

Yes, the Local Sidereal Time, measured in Angle can be negative.

Which unit is used to measure Local Sidereal Time?

Local Sidereal Time is usually measured using the Degree[°] for Angle. Radian[°], Minute[°], Second[°] are the few other units in which Local Sidereal Time can be measured.

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Local Sidereal Time Formula

Local Sidereal Time Example

Local Sidereal Time Solution

Local Sidereal Time Formula Elements

Other formulas in Satellite Orbital Characteristics category

How to Evaluate Local Sidereal Time?

FAQs on Local Sidereal Time

Variable Name