Glossary term: कक्षा (ऑर्बिट)

Description: ऑर्बिट म्हणजे प्रणालीमध्ये फिरणाऱ्या वस्तूचा असा मार्ग जो त्या प्रणालीच्या वस्तुमानाच्या केंद्राभोवती असतो, जो प्रणालीमधील वस्तूंमधील परस्पर गुरुत्वाकर्षण शक्तीमुळे होतो. सूर्यमालेसारख्या प्रणालींसाठी, जिथे मध्यवर्ती भाग इतर शरीरांपेक्षा खूप मोठा आहे, वस्तुमानाचे हे केंद्र सर्वात मोठ्या वस्तूच्या आत किंवा जवळ असते (सूर्यमालेच्या बाबतीत, सूर्य). बायनरी स्टार सिस्टीममध्ये ताऱ्यांच्या कक्षेतील वस्तुमानाचे केंद्र बहुतेक वेळा दोन ताऱ्यांमध्ये असते.

कक्षा सामान्यत: लंबवर्तुळाकार असतात आणि प्रणालीच्या वस्तुमानाचे केंद्र लंबवर्तुळाच्या एका केंद्रस्थानी असते. कक्षेचा आकारमान आणि आकार हे अर्धमुख्य अक्ष आणि लंबवर्तुळाच्या विलक्षणतेद्वारे परिभाषित केले जातात. अधिक विक्षिप्त कक्षांमध्ये खुप जास्त लंबवर्तुळाची विलक्षणता असतात. सूर्यमालेतील बहुतेक ग्रहांची परिभ्रमण विलक्षणता शून्याच्या अगदी जवळ असते, उदाहरणार्थ, शुक्र (0.007), पृथ्वी (0.017), बुध (0.206) आणि बटू ग्रह प्लूटो (0.244).

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

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License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons

Jupiter with coloured horizontal bands of clouds. The shadow of the moon Io is seen as a dark circle in the top left

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beta Pictoris b moves from bottom right towards the center of the image, reappearing 22 months later on the top left

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