Astronomical objects discovered in 1858

main-belt asteroid

main-belt asteroid

main-belt asteroid

main-belt asteroid

main-belt asteroid

8P/Tuttle (also known as '''Tuttle's Comet or Comet Tuttle''') is a periodic comet with a 13.6-year orbit. It fits the classical definition of a Jupiter-family comet with an orbital period of less than 20 years, but does not fit the modern definition of (2 Jupiter< 3). Its last perihelion passage was 27 August 2021 when it had a solar elongation of 26 degrees at approximately apparent magnitude 9. Two weeks later, on September 12, 2021, it was about from Earth which is about as far from Earth as the comet can get when the comet is near perihelion.

comet discovered in 1858

41P/Tuttle–Giacobini–Kresák is a Jupiter-family comet with a 5.43-year orbit around the Sun. Observations with the Hubble Space Telescope and dynamical modeling estimate an effective nucleus radius of , corresponding to a diameter of roughly , smaller than earlier ground-based estimates.