84P/Giclas
Sign in to save84P/Giclas is a Jupiter-family comet with a 6.69-year orbit around the Sun. It is the only comet discovered by American astronomer, Henry L. Giclas.
Key facts
- Comet.name
- 84P/Giclas
- Comet.image
- 84P 2020-08-14 image ZTF-sso-563-zr-fov-4.0arcmin.png
- Comet.caption
- Comet Giclas photographed from the Zwicky Transient Facility on 14 August 2020
- Comet.discoverer
- Henry L. Giclas
- Comet.discovery_site
- Lowell Observatory, USA
- Comet.discovery_date
- 8 September 1978
- Comet.epoch
- 21 November 2025 (JD 2461000.5)
- Comet.observation_arc
- 89.43 years
- Comet.earliest_precovery_date
- 12 September 1931
- Comet.obs
- 1,792
- Comet.perihelion
- 1.719 AU
- Comet.aphelion
- 5.381 AU
- Comet.semimajor
- 3.550 AU
- Comet.period
- 6.689 years
- Comet.eccentricity
- 0.51562
- Comet.inclination
- 7.553°
- Comet.asc_node
- 108.08°
- Comet.arg_peri
- 281.74°
via Wikipedia infobox
Wikidata facts
- Instance of
- Jupiter-family comet
- Parent body
- Sun
- Diameter
- 1.8
- Orbital period
- 2537.323337889819
- Image
- 84P 2020-08-14 image ZTF-sso-563-zr-fov-4.0arcmin.png
Show 14 more facts
- discoverer or inventor
- Henry L. Giclas
- time of discovery or invention
- 1978-09-08
- provisional designation
- 1978 XXII
- absolute magnitude
- 14.2
- orbital eccentricity
- 0.4944679176981627
- semi-major axis of an orbit
- 3.640700259876713
- periapsis
- 1.840490783412315
- apoapsis
- 5.44090973634111
- orbital inclination
- 7.284293770723781
- longitude of ascending node
- 112.3893362880986
- argument of periapsis
- 276.4047896990754
- mean anomaly
- 274.576887886136
- time of periapsis
- 2456496.5723776715
- epoch
- November 29, 2011
via Wikidata · CC0
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Encyclopedic overview
8 sectionsContents
- Observational history
- 1931 apparition
- 1979 apparition
- Follow-up observations
- Physical characteristics
- Notes
- References
- External links
84P/Giclas is a Jupiter-family comet with a 6.69-year orbit around the Sun. It is the only comet discovered by American astronomer, Henry L. Giclas.
== Observational history == === 1931 apparition === It was announced in 1995 that Clyde W. Tombaugh had observed a previously unknown comet for three nights in September 1931. Designated as D/1931 R1, it was later confirmed to be an earlier apparition of 84P/Giclas upon reconstructing its orbit using non-gravitational accelerations in a 1996 study by .
Excerpted from Wikipedia’s “84P/Giclas” article, available under the CC BY-SA 4.0 licence.