Jurnal Armada Pendidikan
Vol 4 No 1 (2026): JURNAL ARMADA PENDIDIKAN

Analisis Periode Rotasi Matahari Berdasarkan Pergerakan Bintik Matahari AR 4207 pada Citra SolarHam Tanggal 1–8 September 2025

Rustaman (Unknown)
Utama, Rodika (Unknown)



Article Info

Publish Date
04 Feb 2026

Abstract

This study aims to determine the rotational period of the Sun by analyzing the motion of a sunspot across the solar disk. The active sunspot region AR 4207 was examined using solar continuum images acquired on 1 and 8 September 2025. The position of the sunspot on each date was projected onto a circular diagram with the central meridian as the reference axis in order to measure its angular displacement. The projected angles relative to the central meridian were found to be  on 1 September and  on 8 September, yielding a total displacement of  over a seven-day interval. By applying the relation , the solar rotation period was calculated to be  days. This result aligns with the typical synodic rotation period of the Sun at low latitudes. The findings demonstrate that sunspot tracking provides a simple and effective method for estimating the Sun’s rotation, making it well suited for educational and observational activities in astronomy.

Copyrights © 2026






Journal Info

Abbrev

jap

Publisher

Subject

Education

Description

Jurnal Armada Pendidikan (JAP) A journal published by a professional book and journal publishing institution, namely “Kilau Publishing”. This journal is registered with the National Research and Innovation Agency (BRIN) with ISSN (online). 2985-7902 and ISSN (print). 2985-8623. Jurnal Armada ...