C/2023 V5 (Leonard)
Discovery
Discovered byGreg J. Leonard
Discovery date6 November 2023
Orbital characteristics
Epoch2023-Nov-07
Observation arc5 days
Number of
observations		136
Orbit typehyperbolic[1][2]
Perihelion0.849 AU[1]
Eccentricity1.026[1]
Inclination73.9°
31.45°
Argument of
periapsis		56.4°
Last perihelion11 November 2023
Earth MOID0.089 AU[1]
Jupiter MOID0.782 AU
Comet total
magnitude (M1)		21.4

C/2023 V5 (Leonard) was discovered on 6 November 2023 by the Catalina Sky Survey. It came to perihelion on 13 December 2023 at 0.849 AU (127.0 million km), from the Sun.[3][4] It is probably a Liller family comet, together with C/1988 A1 (Liller), C/1996 Q1 (Tabur), C/2015 F3 (SWAN), and C/2019 Y1 (ATLAS).[5][6]

Orbit

JPL Horizons shows both an inbound and outbound eccentricity greater than 1.[2]

Comet C/2023 V5 is probably a secondary fragment of one of the primary fragments of C/1988 A1 (Liller).[6]

References

  1. 1 2 3 4 "JPL Small-Body Database Browser: C/2023 V5 (Leonard)". Jet Propulsion Laboratory. Retrieved 22 December 2023.
  2. 1 2 "JPL Horizons On-Line Ephemeris for 2023 V5 at epoch 1950 and 2100 (barycentric)". JPL Horizons On-Line Ephemeris System. Jet Propulsion Laboratory. Retrieved 22 December 2023. Solution using the Solar System Barycenter. Ephemeris Type:Elements and Center:@0 (To be outside planetary region, inbound epoch 1950 and outbound epoch 2100. Aphelia/orbital periods defined while in the planetary-region are misleading for knowing the long-term inbound/outbound solutions.)
  3. ↑ "MPEC 2023-V193 : COMET C/2023 V5 (Leonard)". Minor Planet Electronic Circulars. Minor Planet Center. 11 November 2023.
  4. ↑ "Electronic Telegram No. 5316". Central Bureau Electronic Telegrams. 11 November 2023.
  5. ↑ Sekanina, Zdenek; Kracht, Rainer (1 May 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 (26 pages). arXiv:1510.06445. Bibcode:2016ApJ...823....2S. doi:10.3847/0004-637X/823/1/2.
  6. 1 2 de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (27 November 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 (3 pages). Bibcode:2023RNAAS...7..249D. doi:10.3847/2515-5172/ad0f27.
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