Science

Subaru Telescope reveals the shape and temperature of Comet Encke's nucleus

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Briefings

Subaru Telescope mid-infrared observations of Comet 2P/Encke's nucleus revealed an elongated shape with a 7-kilometer long axis and 3-kilometer short axis. Surface temperature was measured at 328 Kelvin (55°C) during the observation period. Researchers analyzed thermal emission changes as the nucleus rotated to derive these physical properties.

Key points

• Comet 2P/Encke's nucleus is elongated with a long axis of approximately 7 kilometers and a short axis of approximately 3 kilometers.
• The surface temperature of the nucleus was measured at 328 Kelvin (55°C) during the observation period.

Context

This study uses mid-infrared observations from the Subaru Telescope to determine the physical dimensions and thermal state of Comet Encke's nucleus by analyzing rotational thermal emission patterns.

Limitations

Observations were conducted at a specific time, limiting the snapshot of the nucleus's shape and temperature. Data represents a single observation period rather than long-term measurements. No additional background context or future predictions are provided in the source.

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