NGC 2342 is a spiral galaxy in the constellation of Gemini. Its velocity with respect to the cosmic microwave background is 5445 ± 11 km/s, which corresponds to a Hubble distance of 80.31 ± 5.62 Mpc (~262 million light-years). It was discovered by German astronomer Albert Marth on 10 November 1864.
NGC 2342 is a luminous infrared galaxy (LIRG). Together with NGC 2341, they both form a gravitationally bound galaxy pair listed as HOLM 86.
Supernovae
Two supernovae have been observed in NGC 2342:
- SN 2023vck (Type Ib, mag 19.917) was discovered by the Zwicky Transient Facility on 15 October 2023.
- SN 2025aebt (Type Ib, mag. 19.173) was discovered by ATLAS on 17 November 2025.
