NGC Objects Codexery

NGC 1217

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NGC 1217 is a spiral galaxy situated in the constellation Fornax. It was first observed by British astronomer John Herschel on 23 October 1835. The galaxy contains an active galactic nucleus, meaning its central region emits substantial energy across the electromagnetic spectrum in a way that cannot be attributed to stars. It is classified as both a Seyfert II galaxy and a LINER galaxy.

Seyfert II galaxies have bright, quasar-like nuclei with strong, highly ionized emission lines, while the host galaxy remains clearly visible. LINER galaxies, in contrast, show emission spectra dominated by broad lines from weakly ionized atoms. The galaxy's velocity relative to the cosmic microwave background corresponds to a Hubble distance of about 92.66 ± 6.49 Mpc, though one non-redshift measurement gives a closer distance estimate of 61.300 Mpc.

One supernova has been observed in NGC 1217: SN 2025ygq, a Type Ia event with a magnitude of 18.483, discovered by ATLAS on 22 September 2025.

Quick Facts

Constellation
Fornax

Facts from the source article.

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Three questions drawn from this entry’s sources. Pick an answer to check it.

1. In what year was NGC 1217 discovered?

Correct.

Not quite. The answer is 1835.

From the source: “It was discovered by British astronomer John Herschel on 23 October 1835.”

2. Who discovered NGC 1217?

Correct.

Not quite. The answer is John Herschel.

From the source: “It was discovered by British astronomer John Herschel on 23 October 1835.”

3. In which constellation is NGC 1217 located?

Correct.

Not quite. The answer is Fornax.

From the source: “NGC 1217 is a spiral galaxy in the constellation of Fornax.”

Answers checked against the source article

Sources

Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.

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