EntityQ2639989· pop 10· linked from 576 articles

77P/Longmore

77P/Longmore is a periodic comet in the Solar System, with a period of 6.8 years. It is the only comet discovered by Australian astronomer, Andrew Jonathan Longmore.

Key facts

Comet.name: 77P/Longmore
Comet.image: 77P 2023-04-27 image ZTF-sso-226-zr-fov-13arcmin.png
Comet.caption: Longmore's Comet imaged from the Zwicky Transient Facility on 27 April 2023
Comet.discoverer: Andrew J. Longmore
Comet.discovery_site: Siding Spring Observatory
Comet.discovery_date: 10 June 1975
Comet.mpc_name: P/1975 L1, P/1981 A1
Comet.epoch: 17 October 2024 (JD 2460600.5)
Comet.observation_arc: 49.37 years
Comet.obs: 2,712
Comet.perihelion: 2.348 AU
Comet.aphelion: 4.895 AU
Comet.semimajor: 3.621 AU
Comet.period: 6.891 years
Comet.eccentricity: 0.35166
Comet.inclination: 24.320°
Comet.asc_node: 14.457°
Comet.arg_peri: 196.65°

via Wikipedia infobox

Article

3 sections

Contents

Observational history
References
External links

77P/Longmore is a periodic comet in the Solar System, with a period of 6.8 years. It is the only comet discovered by Australian astronomer, Andrew Jonathan Longmore.

== Observational history == It was discovered by Andrew Jonathan Longmore on a photographic plate taken on 10 June 1975 at the 1.22m Schmidt telescope at Siding Spring Observatory, New South Wales, Australia. Its brightness was estimated at an apparent magnitude of 17. After further observations Brian G. Marsden was able to calculate the perihelion date at 4 November 1975 and the orbital period as 6.98 years.