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C/1996 Q1 (Tabur)

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Revision as of 12:03, 30 December 2024 by KyloRen2017 (talk | contribs) (Discovery and observations)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Non-periodic comet For other comets discovered by Vello Tabur, see C/1997 N1 (Tabur) and C/2003 T3 (Tabur).
C/1996 Q1 (Tabur)
Discovery
Discovered byVello Tabur
Discovery siteWanniassa, Australia
Discovery date19 August 1996
Orbital characteristics
Epoch15 September 1996 (JD 2450341.5)
Observation arc58 days
Number of
observations
214
Semi-major axis605.019 AU
Eccentricity0.99861
Orbital period~14,900 years
Inclination73.356°
Longitude of
ascending node
31.400°
Argument of
periapsis
57.413°
Last perihelion3 November 1996
TJupiter0.334
Earth MOID0.0838 AU
Jupiter MOID1.0053 AU
Physical characteristics
Comet total
magnitude
(M1)
11.0
Comet nuclear
magnitude (M2)
16.4
Apparent magnitude4.8
(1996 apparition)

C/1996 Q1 (Tabur) is a non-periodic comets that was expected to appear in the naked eye in but faded rapidly before doing so in 1996. It is the first of three comets discovered by Australian astronomer, Vello Tabur.

Discovery and observations

The comet was first spotted by Vello Tabur from his 0.2 m (7.9 in) reflector as a 10th-magnitude object within the constellation Eridanus on the evening of 19 August 1996. At the time, astronomers had difficulty confirming the new comet's existence until Herman Mikuž and Alan Hale independently spotted it on 21 August.

The comet steadily brightened as it approached the Earth throughout the entire month of September, with some astronomers hoping it would reach naked eye visibility by the end of the month. However, it only reached a peak magnitude of 4.8 on 7 October 1996 before it faded rapidly in the course of three weeks. It was theorized that the comet's sudden decline in brightness were likely caused by the depletion of volatiles within its nucleus.

The comet was last seen as a 9th-magnitude object on 23 November 1996.

Orbit

Shortly after discovery, Brian G. Marsden computed the first parabolic orbit of the comet on 23 August 1996, which was roughly 73 degrees inclined to the ecliptic and an orbital period of approximately 18,500 years. A revised orbit was published about a week later, and Jost Jahn noted it has a strong resemblance to the orbit of C/1988 A1 (Liller), suggesting it might have fragmented from each other in a previous perihelion, despite the latter's shorter orbital period of 2,900 years. In the following years, more fragments of the same comet family were found. These were C/2015 F3 (SWAN), C/2019 Y4 (ATLAS) and C/2023 V5 (Leonard).

References

  1. ^ B. G. Marsden (23 August 1996). "Comet C/1996 Q1 (Tabur)". Central Bureau for Astronomical Telegrams. 6460.
  2. "C/1996 Q1 (Tabur) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 21 November 2023.
  3. ^ G. W. Kronk. "C/1996 Q1 (Tabur)". Cometography.com. Retrieved 30 December 2024.
  4. L. Kolokolava; L. M. Lara; R. Schulz; J. A. Stüwe; G. P. Tozzi (2001). "Properties and Evolution of Dust in Comet Tabur (C/1996 Q1) from the Color Maps". Icarus. 153 (1): 197–207. doi:10.1006/icar.2001.6665. ISSN 0019-1035.
  5. M. Fulle; H. Mikuž; M. Nonino; S. Bosio (1998). "The Death of Comet Tabur 1996 Q1: The Tail without the Comet". Icarus. 134 (2): 235–248. doi:10.1006/icar.1998.5943. ISSN 0019-1035.
  6. L. M. Lara; R. Schulz; J. A. Stüwe; G. P. Tozzi (2001). "Activity of Comet Tabur (C/1996 Q1) during September 12–17, 1996". Icarus. 150 (1): 124–139. doi:10.1006/icar.2000.6547. ISSN 0019-1035.
  7. B. G. Marsden (23 August 1996). "Comet C/1996 Q1 (Tabur)". Central Bureau for Astronomical Telegrams. 6464.
  8. Z. Sekanina; R. Kracht (2016). "Pairs and Groups of Genetically Related Long-period Comets and Proposed Identity of the Mysterious Lick Object of 1921". The Astrophysical Journal. 823 (1): 2–28. arXiv:1510.06445. Bibcode:2016ApJ...823....2S. doi:10.3847/0004-637X/823/1/2.
  9. C. dela Fuente Marcos; R. dela Fuente Marcos (2023). "Second-generation Fragments of a Comet Split in the Making: The Liller Family Comets". Research Notes of the American Astronomical Society. 7 (11): 249–251. Bibcode:2023RNAAS...7..249D. doi:10.3847/2515-5172/ad0f27.

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