77P/Longmore
Sign in to save77P/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
Wikidata facts
- Instance of
- Jupiter-family comet
- Parent body
- Sun
- Diameter
- 8.2
- Orbital period
- 2507.920016896118
- Image
- 77P 2023-04-27 image ZTF-sso-226-zr-fov-13arcmin.png
Show 13 more facts
- time of discovery or invention
- 1975-06-10
- provisional designation
- 77P/1987c1
- absolute magnitude
- 9.1
- epoch
- December 6, 2013
- orbital eccentricity
- 0.3541884234361041
- semi-major axis of an orbit
- 3.612519249507019
- periapsis
- 2.33300675189155
- apoapsis
- 4.892031747122489
- orbital inclination
- 24.34166334606224
- longitude of ascending node
- 14.89082988651348
- argument of periapsis
- 196.9616689369937
- mean anomaly
- 232.1680410632543
- time of periapsis
- 2457523.034246157
via Wikidata · CC0
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Encyclopedic overview
3 sectionsContents
- 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.
Excerpted from Wikipedia’s “77P/Longmore” article, available under the CC BY-SA 4.0 licence.