Journal of Astronomy and Space Sciences

GNSS Analysis of the Ionospheric Response to the Extreme Geomagnetic Storm of May 11, 2024: Latitudinal Dependence of VTEC

Karim Guibula, Abidina Diabate, Moumouni Diallo

J. Astron. Space Sci. 2026;43(2):93-101.
https://doi.org/10.5140/JASS.2026.43.2.93

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Inter-Hemispheric Comparison of Meteor Decay Time and Its Derived Parameters at 68° Latitudes

Sangadeep Borukote, Chenna Reddy Kammadhanam

J. Astron. Space Sci. 2026;43(2):83-92.
https://doi.org/10.5140/JASS.2026.43.2.83

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Image-Based Star Detection and Centroid Estimation: Initial Exploration of Lunar Navigation Systems

Anis Hannani Razaman, Yasser Asrul Ahmad

J. Astron. Space Sci. 2026;43(2):71-82.
https://doi.org/10.5140/JASS.2026.43.2.71

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Research on Initial Orbit Determination of Near-Circular Orbit Space Objects Based on the Admissible Region Method

Yewen Yin, Zhenwei Li, Zhe Kang, Wenbo Yang, Jiannan Sun

J. Astron. Space Sci. 2026;43(2):55-70.
https://doi.org/10.5140/JASS.2026.43.2.55

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Revisit Time Analysis Framework of Low Earth Orbit Constellation for Various Payloads using MATLAB

Hongseok Kim, Su-Jin Choi

J. Astron. Space Sci. 2026;43(2):35-53.
https://doi.org/10.5140/JASS.2026.43.2.35

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In-Orbit Temperature Calibration of Long-Term Korea Pathfinder Lunar Orbiter Magnetometer Data

Yesun Ahn, Ho Jin, Hyeonhu Park, Yunho Jang, Wooin Jo, Seul-Min Baek, Jehyuck Shin

J. Astron. Space Sci. 2026;43(2):103-116.
https://doi.org/10.5140/JASS.2026.43.2.103

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Occurrence Rate of Sunspots in Solar Cycles 12–25

Jung-Hee Kim, Heon-Young Chang

J. Astron. Space Sci. 2026;43(1):27-34.
https://doi.org/10.5140/JASS.2026.43.1.27

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Deep Learning-Based Prediction of Tool Influence Function for Nanometric Control in Space Optical Material

Seung Ho Han, Jeong-Yeol Han, Jiwoo Lee, Eunsu Park, Seonghwan Choi

J. Astron. Space Sci. 2026;43(1):21-26.
https://doi.org/10.5140/JASS.2026.43.1.21

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Mapping of Patterned Regolith Textures Near the Lunar South Pole

Holly M. Brown, Aaron K. Boyd, Mark S. Robinson, Megan R. Henriksen, Hannes Bernhardt

J. Astron. Space Sci. 2026;43(1):1-19.
https://doi.org/10.5140/JASS.2026.43.1.1

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Luminance Within Lunar Permanently Shadowed Regions

Robert Vernon Wagner, Mark Southwick Robinson

J. Astron. Space Sci. 2025;42(4):97-118.
https://doi.org/10.5140/JASS.2025.42.4.97

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Episodic Mass Wasting and Exposure of High Reflectance Material Within the Shackleton Crater Permanently Shadowed Region

Prasun Mahanti, Shuai Li, Mark S. Robinson, Thomas Watters, Paul Lucey, Brad Jolliff, Madeleine Manheim, Cordell Michaud

J. Astron. Space Sci. 2025;42(4):85-96.
https://doi.org/10.5140/JASS.2025.42.4.85

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Mesoscale Ionospheric Irregularity Oval at High Latitudes Observed by Global GNSS Networks (2010–2024)

Shun-Rong Zhang, Anthea J. Coster, Philip J. Erickson, Larisa P. Goncharenko, Jing Liu

J. Astron. Space Sci. 2025;42(4):119-134.
https://doi.org/10.5140/JASS.2025.42.4.119

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Establishment of a Mid-Latitude Neutron Monitoring Site at Mt. Gamak in Korea

Jongil Jung, Young-Sil Kwak, Jongdae Sohn, Suyeon Oh, Yu Yi, Yongkyun Kim, Seonghwan Choi, Paul Evenson

J. Astron. Space Sci. 2025;42(3):77-84.
https://doi.org/10.5140/JASS.2025.42.3.77

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Main Oscillatory Polar Motion of the Earth and Its Excitation: Investigation in Both the Frequency and Time Domains

Sung-Ho Na, Yu Yi

J. Astron. Space Sci. 2025;42(3):63-76.
https://doi.org/10.5140/JASS.2025.42.3.63

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The Advanced Mesospheric Temperature Mapper: 2-D Measurement of Mesopause Temperatures at King Sejong Station, Antarctica

Ji Eun Kim, Jeong-Han Kim, Geonhwa Jee, Trond S. Trondsen, Craig Unick, Devin Wyatt, Hosik Kam

J. Astron. Space Sci. 2025;42(2):47-61.
https://doi.org/10.5140/JASS.2025.42.2.47

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Classification of Ionograms Obtained from Vertical Incidence Pulsed Ionospheric Radar (VIPIR)/Dynasonde Ionospheric Radar at Jang Bogo Station, Antarctica

Junho Back, Geonhwa Jee, Hyuck-Jin Kwon, Khan-Hyuk Kim, Changsup Lee, Young-Bae Ham, Nikolay Zabotin

J. Astron. Space Sci. 2025;42(2):39-46.
https://doi.org/10.5140/JASS.2025.42.2.39

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Trends of Solar, Interplanetary, and Geomagnetic Parameters during the Recent Five Solar Cycles

Myunghwan Kim, Suyeon Oh

J. Astron. Space Sci. 2025;42(1):29-37.
https://doi.org/10.5140/JASS.2025.42.1.29

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Development of Anisotropic Magnetoresistive (AMR) Sensor Module for the Magnetic Field Instrument of Lunar Lander

Juhyeong Kim, Ho Jin, Young-jun Choi, Hyeonhu Park, Yunho Jang, Seungmin Lee, Hyeonji Kang, Wooin Jo

J. Astron. Space Sci. 2025;42(1):15-27.
https://doi.org/10.5140/JASS.2025.42.1.15

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Challenges to Space Activities in the Context of Mega Satellite Constellations: A Focus on Environmental Impacts

Sheer Abbas

J. Astron. Space Sci. 2025;42(1):1-13.
https://doi.org/10.5140/JASS.2025.42.1.1

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Ground Calibration with Orthogonality Correction for Tri-Axis Fluxgate Magnetometer for CAS500-3

Dooyoung Choi, Seunguk Lee, Jimin Hong, Su-Hwan Park, SeongOg Park, Wonho Cha, Jinkyu Kim, Bonju Gu, Po Gyu Park, Sungjung Joo, Cheong Rim Choi, Dae-Young Lee, Kwangsun Ryu

J. Astron. Space Sci. 2024;41(4):271-281.
https://doi.org/10.5140/JASS.2024.41.4.271

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