Mass

Just how heavy is 1 × 10¹² solar masses?

Moons, planets & stars

1 × 10¹² M☉

1.9885 × 10⁴² kgkilograms
4.3838 × 10⁴² lbpounds
1.9885 × 10³⁹ ttonnes
Linear measure
MASS1 × 10¹² M☉15 M☉Too small to see at this scale
01
1 × 10¹² solar masses1 × 10¹² M☉Mass · definition
02
Betelgeuse15 M☉Mass · rounded model
Bar length measures mass, not physical size.

A little perspective

1 × 10¹² solar masses has about 6.67 × 10¹⁰ times the mass of Betelgeuse.

Measurements, assumptions & sources +

1 × 10¹² solar masses

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

Betelgeuse

A deliberately rounded red-supergiant model. Its apparent edge varies with wavelength and the star changes over time.

Defined examples — our methodology

The marked mass is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

The visual compares mass with mass. The records below preserve each value’s basis and caveats.

1 × 10¹² solar masses

1 × 10¹² M☉

Mass · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

Betelgeuse

15 M☉

Mass · rounded model

A deliberately rounded red-supergiant model. Its apparent edge varies with wavelength and the star changes over time.

Comparing
Mass ↔ Mass
Relative size
1 × 10¹² solar masses is larger on this measurement by a factor of about 6.67 × 10¹⁰.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

  • Betelgeuse is labelled rounded model; treat the displayed value as a comparison anchor rather than false precision.

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