Neutron Star Density t/cm³ Estimate
Spherical mean density,1 tonne/cm³=10^9 kg/m³, not neutron-star equation of state. Model only, not an ephemeris, measured stellar identity or observational guarantee.
Description
Mean stellar density uses mass divided by a spherical volume.
Mean stellar density uses mass divided by a spherical volume.1
A neutron-star label does not make a mean-density estimate a detailed relativistic interior model. Use Neutron Star Density t/cm³ Estimate to evaluate the supplied inputs under the model explained below.
When to use Neutron Star Density t/cm³ Estimate
Use Neutron Star Density t/cm³ Estimate to evaluate the supplied inputs under the model explained below. Establish the units, measurement scope and model assumptions before entering values.
How to use Neutron Star Density t/cm³ Estimate and understand its results
- Establish the units, measurement scope and model assumptions before entering values.
- Enter Mass kg, Radius km using the field table and validation rules below, then run the tool.
- Read Mean density tonnes per cubic cm; interpret the units, signs, ordering and unknown-value placeholders described below.
- Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| massKg | Mass kg | number | Required; constraints below |
| radiusKm | Radius km | number | Required; constraints below |
Enter nonnegative mass in kg and positive radius in km. Divide mass by spherical volume after converting radius to m, then divide kg/m³ by 1000000000 to express tonnes/cm³. Zero mass returns zero; no density profile or relativistic structure is modeled.
meanTonnesPerCM3=massKg/((4π/3)×(1000×radiusKm)³)/1e9 Use the field order, units and branch conditions described above.
| Output field | Meaning | Value type |
|---|---|---|
| meanDensityTonnesPerCubicCm | Mean density tonnes per cubic cm | number |
{
"input": {
"massKg": 4188790204786.3906,
"radiusKm": 1
},
"output": {
"meanDensityTonnesPerCubicCm": 0.0000010000000000000002
}
}Limitations and assumptions
A neutron-star label does not make a mean-density estimate a detailed relativistic interior model. Apply the exact scope and assumptions explained above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.
Alternative or Complementary methods
Use Tidal Force Ratio Two Bodies Calculator for a related task: A distant body's tidal gradient scales with mass divided by distance cubed.
Use Schwarzschild Radius From Mass for a related task: The Schwarzschild radius describes an ideal nonrotating, uncharged mass model.
References
-
Neutron Star Density t/cm³ Estimate — tool.io
Similar or alternative tools
- Tidal Force Ratio Two Bodies Calculator
A distant body's tidal gradient scales with mass divided by distance cubed.
- Schwarzschild Radius From Mass
The Schwarzschild radius describes an ideal nonrotating, uncharged mass model.