24P/Schaumasse

Last updated
24P/Schaumasse
Comete Schaumasse.jpg
Discovery
Discovered by Alexandre Schaumasse
Discovery site Nice, France
Discovery date1 December 1911
Designations
P/1911 X1, P/1919 U1
  • 1911 VII, 1919 IV
  • 1927 VIII, 1943 V, 1952 III
  • 1960 III, 1976 XV
  • 1984 XXII, 1993 III
Orbital characteristics [1] [2]
Epoch 23 November 2017 (JD 2458080.5)
Observation arc 66.52 years
Number of
observations		1,549
Aphelion 6.961 AU
Perihelion 1.206 AU
Semi-major axis 4.084 AU
Eccentricity 0.70459
Orbital period 8.252 years
Inclination 11.735°
79.630°
Argument of
periapsis 		58.058°
Mean anomaly 0.725°
Last perihelion16 November 2017
Next perihelion8 January 2026 [3] [4]
TJupiter 2.504
Earth MOID 0.283 AU
Jupiter MOID 0.457 AU
Physical characteristics [1]
Dimensions 2.6 km (1.6 mi)
Comet total
magnitude (M1)		12.0
Comet nuclear
magnitude (M2)		15.6

Comet Schaumasse is a periodic comet discovered by Alexandre Schaumasse (Nice, France) on 1 December 1911 as 12th magnitude. [5] It next comes to perihelion on 8 January 2026 and should brighten to about magnitude 9. [3]

Contents

Observations

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 by Gaston 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 to Jupiter which increased its orbital period slightly. [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 by James B. Gibson (Palomar Observatory, California, USA). [6] Also in 1984 was reported that Elizabeth Roemer (Steward Observatory, Arizona, USA) had found a comet on a photograph from 27 December 1976. [5] Orbital calculations by Brian G. Marsden, confirmed the 1976 image featured Comet Schaumasse. [5] [6]

The comet was not observed during the 2009 unfavorable apparition since the perihelion passage occurred when the comet was on the far side of the Sun. It passed within 0.025  AU (4 million  km ) of the dwarf planet Ceres on 22 March 2010. [1] 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. [2]

24P/Schaumasse closest Earth approach on 2026-Jan-04 [5]
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-040.597  AU (89.3 million  km ; 55.5 million  mi ; 232  LD )1.19 AU (178 million km; 111 million mi; 460 LD)19.035.8± 420 thousand km Horizons

Around 3 October 2100 it should pass about 0.27 AU (40 million km) from Mars. [8]

The comet nucleus is estimated to be 2.6 kilometers in diameter. [1]

References

  1. 1 2 3 4 "JPL Small-Body Database Browser: 24P/Schaumasse" (last observation: 2018-06-19). Jet Propulsion Laboratory. Archived from the original on 2012-12-12. Retrieved 2010-02-25.
  2. 1 2 MPC
  3. 1 2 Seiichi Yoshida (2009-04-07). "24P/Schaumasse". Seiichi Yoshida's Comet Catalog. Retrieved 2010-02-24.
  4. ↑ Kinoshita, Kazuo (2018-04-07). "24P/Schaumasse past, present and future orbital elements". Comet Orbit. Archived from the original on 2011-07-10. Retrieved 2023-07-29.
  5. 1 2 3 4 5 6 7 8 9 10 Kronk, Gary W. (2001–2005). "24P/Schaumasse". Archived from the original on 2011-09-23. Retrieved 2007-01-31.
  6. 1 2 Gibson, J.; Roemer, E.; Marsden, B. G. (1 September 1984). "Periodic Comet Schaumasse (1976 XV = 1984m)". International Astronomical Union Circular (3986): 2. ISSN   0081-0304.
  7. ↑ Champo, Pepe (23 November 2017). "COMET 24P/SCHAUMASSE (NOV.19,2017)". Sky & Telescope. Retrieved 29 March 2023.
  8. ↑ "Horizons Batch for 24P/Schaumasse (90000353) on 2100-Oct-03". JPL Horizons . Retrieved 2023-07-29. (JPL#K173/9 Soln.date: 2018-Sep-24)
Numbered comets
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