What Is This Tool?
This converter transforms angular velocity values from revolution per day (r/d), a unit representing one full rotation in 24 hours, into degree per minute (°/min), which measures angular displacement per minute. It is designed for applications involving slow rotational speeds such as planetary motion, spacecraft spin, and precise instrumentation control.
How to Use This Tool?
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Enter the value in revolution/day (r/d) you wish to convert
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Select degree/minute (°/min) as the target unit
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Apply the conversion formula or use the tool's compute function
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Review the resulting angular velocity expressed in degrees per minute
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Use the converted value for practical application such as telescope tracking or camera motion control
Key Features
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Converts angular velocity between revolution/day and degree/minute
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Supports interpretation of slow rotational speeds in various scientific and engineering fields
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Provides straightforward calculation using the formula: 1 r/d = 0.25 °/min
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Useful for astronomy, spacecraft engineering, and precision instrumentation
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Browser-based tool requiring no installation
Examples
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2 r/d converts to 0.5 °/min by multiplying 2 × 0.25
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4 r/d converts to 1.0 °/min by multiplying 4 × 0.25
Common Use Cases
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Describing rotation rates of planets, moons, or asteroids in astronomy
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Monitoring slow spin rates of spacecraft or spin-stabilized satellites
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Tracking Earth’s rotation and angular drift for geodesy and timekeeping
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Calculating telescope tracking rates for astronomical observations
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Controlling pan/tilt speeds of surveillance or time-lapse cameras
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Managing mechanical scanning speeds of radar/antenna and gimbal platforms
Tips & Best Practices
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Use this conversion to translate slow rotation speeds into more intuitive angular displacement units
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Ensure uniform rotation assumption holds when applying this conversion
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Consider the resolution limits of your instrumentation when dealing with very small converted values
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For scientific calculations requiring SI units, convert angular velocity to radians per second
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Use precise unit selection based on the specific field of application such as astronomy or engineering
Limitations
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Revolution/day reflects very slow rotation, so converted values in degree/minute can be extremely small
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Degree/minute is not an SI coherent unit; radians per second may be required for precise scientific work
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Conversion assumes a steady uniform rotation; actual rotational speeds may vary over time
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Small angular velocities may fall below some instruments’ measurement resolution
Frequently Asked Questions
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What does 1 revolution/day represent?
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It represents one complete rotation of 360 degrees occurring over a 24-hour period.
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Why convert revolution/day to degree/minute?
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Converting to degree/minute provides a more practical unit for describing slow angular velocity in shorter time intervals, useful in telescope tracking and camera control.
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Is degree/minute an SI unit?
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No, degree/minute is not SI coherent; radians per second is the standard SI unit for angular velocity.
Key Terminology
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Revolution/day [r/d]
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A unit of angular velocity equal to one complete rotation occurring within a 24-hour period.
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Degree/minute [°/min]
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A unit measuring angular displacement of one degree per minute, used for relatively slow rotation rates.
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Angular Velocity
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The rate of change of angular position of an object, expressing how fast it rotates.