24P/Schaumasse
 | |
| Discovery | |
|---|---|
| Discovered by | Alexandre Schaumasse |
| Discovery date | 1 December 1911 |
| Designations | |
| 1911 X1, 1919 U1 | |
| Orbital characteristics | |
| Epoch | 2025-12-31[1] |
| Aphelion | 6.93AU |
| Perihelion | 1.183 AU |
| Semi-major axis | 4.06 AU |
| Eccentricity | 0.7083 |
| Orbital period | 8.18yr |
| Inclination | 11.50° |
| Last perihelion | 16 November 2017 9 August 2009 (unobserved)[2] |
| Next perihelion | 2026-Jan-08[1][2][3] |
| Physical characteristics | |
| Dimensions | 2.6 km[4] |
Comet Schaumasseis aperiodic cometdiscovered byAlexandre Schaumasse(Nice,France) on 1 December 1911 as 12thmagnitude.[5]It next comes toperihelionon 8 January 2026 and should brighten to about magnitude 9.[2]
Observations
[edit]By the end of 1912 it was recognised as a short period comet estimated to return in 7.1 years, later recalculated as 8 years.[5]The 1919 return was recovered byGaston Fayet(Paris, France) as magnitude 10.5.[5]
The 1927 approach was magnitude 12, but the comet was missed on the 1935 approach.[5]In 1937 it passed close toJupiterwhich increased itsorbital periodslightly.[5]During the 1951-1952 apparition, the comet was brighter than expected, reaching a magnitude of about 6 in February.[5]
The comet was missed in 1968 and 1976.[5]It was speculated that the increase in brightness in 1952 indicated a problem that led to it vanishing. The comet during the 1984 apparition was recovered byJames B. Gibson(Palomar Observatory,California, USA).[6]Also in 1984 was reported thatElizabeth Roemer(Steward Observatory,Arizona,USA) had found a comet on a photograph from 27 December 1976.[5]Orbital calculations byBrian G. Marsden,confirmed the 1976 image featured Comet Schaumasse.[5][6]
The comet was not observed during the 2009 unfavorable apparition since theperihelionpassage occurred when the comet was on the far side of the Sun. It passed within 0.025AU(4 millionkm) of thedwarf planetCereson 22 March 2010.[4]During the 2017 apparition the comet reached a magnitude of 10.[7]It was last observed on 19 June 2018 when it was 2.7 AU from the Sun.[1]
| Date & time of closest approach |
Earth distance (AU) |
Sun distance (AU) |
Velocity wrt Earth (km/s) |
Velocity wrt Sun (km/s) |
Uncertainty region (3-sigma) |
Reference |
|---|---|---|---|---|---|---|
| 2026-Jan-04 | 0.597AU(89.3 millionkm;55.5 millionmi;232LD) | 1.19 AU (178 million km; 111 million mi; 460 LD) | 19.0 | 35.8 | ± 420 thousand km | Horizons |
Around 3 October 2100 it should pass about 0.27 AU (40 million km) fromMars.[8]
Thecomet nucleusis estimated to be 2.6 kilometers in diameter.[4]
References
[edit]- ^abcMPC
- ^abcSeiichi Yoshida (2009-04-07)."24P/Schaumasse".Seiichi Yoshida's Comet Catalog.Retrieved2010-02-24.
- ^Kinoshita, Kazuo (2018-04-07)."24P/Schaumasse past, present and future orbital elements".Comet Orbit.Archived fromthe originalon 2011-07-10.Retrieved2023-07-29.
- ^abc"JPL Small-Body Database Browser: 24P/Schaumasse"(last observation: 2018-06-19).Jet Propulsion Laboratory.Archivedfrom the original on 2012-12-12.Retrieved2010-02-25.
- ^abcdefghijKronk, Gary W.(2001–2005)."24P/Schaumasse".Archivedfrom the original on 2011-09-23.Retrieved2007-01-31.
- ^abGibson, J.; Roemer, E.; Marsden, B. G. (1 September 1984)."Periodic Comet Schaumasse (1976 XV = 1984m)".International Astronomical Union Circular(3986): 2.ISSN0081-0304.
- ^Champo, Pepe (23 November 2017)."COMET 24P/SCHAUMASSE (NOV.19,2017)".Sky & Telescope.Retrieved29 March2023.
- ^"Horizons Batch for 24P/Schaumasse (90000353) on 2100-Oct-03".JPL Horizons.Retrieved2023-07-29.(JPL#K173/9 Soln.date: 2018-Sep-24)
External links
[edit]- Orbital simulationfrom JPL (Java) /Horizons Ephemeris
- 24P/Schaumasse– Seiichi Yoshida @ aerith.net
- 24P at Kronk's Cometography
- 24P at Kazuo Kinoshita's Comets
