Comets & Asteroids - Summary for Jan & Feb 2019

During the 2-month period January through February 2019, 14 new comets were discovered. Moreover inner main-belt minor planet (6478) GAULT developed a lengthening tail or trail.

The dates below refer to the date of issuance of CBET (Central Bureau Electronic Telegram)  which reported the official news & designations.

- Comet Discoveries
Jan 02 Discovery of P/2018 Y2 (AFRICANO)      (CBET 4590)
Jan 07 Discovery of P/2019 A1 (PANSTARRS)   (CBET 4591)
Jan 08 Discovery of P/2019 A2 (ATLAS)            (CBET 4595)
Jan 10 Discovery of P/2019 A3 (PANSTARRS)   (CBET 4598)
Jan 17 Discovery of P/2019 A4 (PANSTARRS)   (CBET 4600)
Jan 17 Discovery of C/2019 A5 (PANSTARRS)   (CBET 4601)
Jan 17 Discovery of P/2019 A6 (LEMMON-PANSTARRS)   (CBET 4602)
Jan 23 Discovery of C/2019 B1 (AFRICANO)    (CBET 4604)
Jan 23 Discovery of P/2019 A7 (PANSTARRS)   (CBET 4605)
Feb 04 Discovery of P/2018 V5 (TRUJILLO-SHEPPARD)   (CBET 4607)*
Feb 04 Discovery of P/2019 A8 (PANSTARRS)   (CBET 4608)
Feb 04 Discovery of P/2019 B2 (GROELLER)    (CBET 4609)
Feb 07 Discovery of C/2019 A9 (PANSTARRS)   (CBET 4610)
Feb 27 Discovery of C/2019 B3 (PANSTARRS)   (CBET 4611)

* S. Sheppard reported that this object showed a ~9" tail in P.A. 276 on 2018 Nov. 7 and a 19" tail in P.A. 277 on 2019 Jan. 8.  The comet was detected by C. Trujillo on images taken by Sheppard.  R. Weryk reported prediscovery images that showed the object with a  1".3 FWHM (compared to 1".10 +/- 0".05 for nearby stars) on 2017 Oct. 28.

- Other news

Jan 07 CBET 4592, CBET 4593 (Jan 08), CBET 4596 (Jan 09), CBET 4599 (Jan 16) report that the following minor planets are binaries systems: (2337) BOUBIN, 2016 AZ_8, (7393) LUGINBUHL & (2070) HUMASON

Jan 08 CBET 4594 (issued on 2019, January 08) announces the serendipitous discovery by the "Asteroid Terrestrial-Impact Last Alert System" (ATLAS) team of unusual activity associated with the inner main-belt minor planet (6478) which appears to have developed a lengthening tail or trail (image above). 

by Ernesto Guido