Bartels' Rotation Number
Encyclopedia
Bartels’ Rotation Number is a serial numbering of the 27-day rotations of the sun
, with the first being the rotation of January 1833. It uses a period of exactly 27 days and starts from 8 February 1832.
It is the serial number
assigned to 27-day recurrence periods of solar and geophysical parameters. The equatorial rotation rate of the Sun is very close to 27 days. Rotation one Day one in this sequence was assigned arbitrarily by J. Bartels to 8 February 1832.
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
, with the first being the rotation of January 1833. It uses a period of exactly 27 days and starts from 8 February 1832.
It is the serial number
Serial number
A serial number is a unique number assigned for identification which varies from its successor or predecessor by a fixed discrete integer value...
assigned to 27-day recurrence periods of solar and geophysical parameters. The equatorial rotation rate of the Sun is very close to 27 days. Rotation one Day one in this sequence was assigned arbitrarily by J. Bartels to 8 February 1832.