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Potential Kreutz sungrazer with temporary designation A11bP7I imaged on Sep. 28 with iTelescope's 0.51m CDK (T30) on Siding Spring...

Potential Kreutz sungrazer with temporary designation A11bP7I imaged on Sep. 28 with iTelescope's 0.51m CDK (T30) on Siding Spring mountain. Details in the image.

Here's an overview of the most important events and a simulation of the expected morphology of C/2023 A3 (Tsuchinshan-ATLAS).

Here's an overview of the most important events and a simulation of the expected morphology of C/2023 A3 (Tsuchinshan-ATLAS).

C/2023 A3 (Tsuchinshan-ATLAS) as imaged from Dordrecht, NL last night (28 Apr 2024). The apparent tail length is now increasing as the earth...

C/2023 A3 (Tsuchinshan-ATLAS) as imaged from Dordrecht, NL last night (28 Apr 2024).

The apparent tail length is now increasing as the earth moves away from the comet's orbital plane, after crossing it on April 11.

Around the same time this image was taken, I also observed it visually with the 12" dobson and estimated it at mag. 10.2 with DC6/. The dust tail was clearly visible for about 2.5'.
We'll have to wait patiently as always but so far it's developing quite well.

Details in the image.

A recently discovered object showing cometary features has been identified as the previously known minor planet 2006 AH2, which has...

A recently discovered object showing cometary features has been identified as the previously known minor planet 2006 AH2, which has therefore been redesignated P/2006 AH2 (Sheppard-Tholen)

It is a Jupiter-family comet on a ~18 year orbit that reached perihelion last summer.

See MPEC 2024-H65 and http://astro.vanbuitenen.nl/comet/2006AH2

New comet confirmed: C/2024 G3 (ATLAS)It appears to be a dynamically new sunskirter with a perihelion distance (q) of only 0.0935 AU, just...

New comet confirmed: C/2024 G3 (ATLAS)

It appears to be a dynamically new sunskirter with a perihelion distance (q) of only 0.0935 AU, just over 20 solar radii.
Its absolute magnitude will probably turn out to be a few magnitudes short of the Bortle survival limit (7.0+6q), meaning that it is likely to disintegrate. If this comet manages to survive, it may become bright but only at very low solar elongation.
Nevertheless an interesting object.

See MPEC 2024-H22 and http://astro.vanbuitenen.nl/comet/2024G3

New comet confirmed: C/2024 G2 (ATLAS)It is moving in from the south on an inclined, retrograde orbit (i=122°) and will reach perihelion in...

New comet confirmed: C/2024 G2 (ATLAS)

It is moving in from the south on an inclined, retrograde orbit (i=122°) and will reach perihelion in June of 2025.

See MPEC 2024-H20 and http://astro.vanbuitenen.nl/comet/2024G2

New comet confirmed: C/2024 G1 (Wierzchos)It is currently north of the ecliptic on a highly inclined (95°) orbit with perihelion in October...

New comet confirmed: C/2024 G1 (Wierzchos)

It is currently north of the ecliptic on a highly inclined (95°) orbit with perihelion in October of this year. Based on the current orbital elements by the MPC, it passed within 3 AU of Uranus early in 2017.

See MPEC 2024-H10 and http://astro.vanbuitenen.nl/comet/2024G1

New periodic comet confirmed: C/2024 F2 (PANSTARRS)The comet has an orbital period of ~31 years and will reach perihelion in August of this...

New periodic comet confirmed: C/2024 F2 (PANSTARRS)

The comet has an orbital period of ~31 years and will reach perihelion in August of this year.
Given the current orbital elements, it would approach Jupiter to <0.6 AU in 2057, increasing its orbital period by several years.

See MPEC 2024-G103 and http://astro.vanbuitenen.nl/comet/2024F2

New Jupiter-family comet confirmed: P/2024 F1 (PANSTARRS)It approached Jupiter to ~0.6 AU in February 2021, reducing its orbital period by a...

New Jupiter-family comet confirmed: P/2024 F1 (PANSTARRS)

It approached Jupiter to ~0.6 AU in February 2021, reducing its orbital period by a few months to 6.4 years.

See MPEC 2024-G102 and http://astro.vanbuitenen.nl/comet/2024F1

A new, interesting comet was confirmed last week: C/2024 E1 (Wierzchoś)While currently still at almost 8 AU, the comet will get as close to...

A new, interesting comet was confirmed last week: C/2024 E1 (Wierzchoś)

While currently still at almost 8 AU, the comet will get as close to the sun as 0.56 AU the at perihelion in January of 2026. Unfortunately this will occur at poor elongation on the far side of the sun. The comet will probably be best observed in the weeks after perihelion from the southern hemisphere.

See MPEC 2024-E102 and http://astro.vanbuitenen.nl/comet/2024E1

New comet confirmed on Feb. 22: C/2023 X7 (PANSTARRS)The comet will reach perihelion in May of this year at 4.8 AU from the sun. It is...

New comet confirmed on Feb. 22: C/2023 X7 (PANSTARRS)

The comet will reach perihelion in May of this year at 4.8 AU from the sun. It is already past its closest approach to earth and fading.

See MPEC 2024-D102 and http://astro.vanbuitenen.nl/comet/2023X7

New comet confirmed on Feb. 21: C/2024 C4 (ATLAS)With just 6 days of observations, the orbit should be treated as preliminary. The current...

New comet confirmed on Feb. 21: C/2024 C4 (ATLAS)

With just 6 days of observations, the orbit should be treated as preliminary. The current MPC elements imply that perihelion occurred at the end of last month.

See MPEC 2024-D98 and http://astro.vanbuitenen.nl/comet/2024C4

A new, distant comet was confirmed on Feb. 21: C/2024 C3 (PANSTARRS)Pre-discovery observations are dating back to March 2023. The MPC...

A new, distant comet was confirmed on Feb. 21: C/2024 C3 (PANSTARRS)

Pre-discovery observations are dating back to March 2023.
The MPC elements give it an orbital period of <40 years.
It is already past perihelion, which occurred last November at 6.7 AU from the sun.

See MPEC 2024-D97 and http://astro.vanbuitenen.nl/comet/2024C3

New comet confirmed on Feb. 15: C/2024 A2 (ATLAS)It will reach perihelion on April 28 of this year at a distance of 1.9 AU from the sun. The...

New comet confirmed on Feb. 15: C/2024 A2 (ATLAS)

It will reach perihelion on April 28 of this year at a distance of 1.9 AU from the sun. The current MPC orbit gives it an orbital period of 186 years.

See MPEC 2024-C180 and
http://astro.vanbuitenen.nl/comet/2024A2

New, distant comet confirmed on Feb 15: C/2024 C2 (PANSTARRS)This is a distant object. It will reach perihelion in March of 2025 at a...

New, distant comet confirmed on Feb 15: C/2024 C2 (PANSTARRS)

This is a distant object. It will reach perihelion in March of 2025 at a distance of almost 9 AU from the sun. Pre-discovery observations are dating back to December of last year. The current MPC orbit gives it an orbital period of 65 years.

See MPEC 2024-C178 and https://astro.vanbuitenen.nl/comet/2024C2

New comet confirmed on Feb. 15: C/2024 C1 (PANSTARRS)Pre-discovery observations are dating back to Dec. 12 of last year. The current orbit...

New comet confirmed on Feb. 15: C/2024 C1 (PANSTARRS)

Pre-discovery observations are dating back to Dec. 12 of last year.
The current orbit by the MPC give the comet an orbital period of 34 years. It will reach perihelion in August at a distant 4.4 AU from the sun.

See MPEC 2024-C177 and http://astro.vanbuitenen.nl/comet/2024C1

A new comet was confirmed on Feb. 8: C/2024 B2 (Lemmon)Pre-discovery observations are dating back to May 2023. Perihelion occurred in...

A new comet was confirmed on Feb. 8:
C/2024 B2 (Lemmon)

Pre-discovery observations are dating back to May 2023.
Perihelion occurred in October of last year at 4.1 AU from the sun.
Last month, is was at its closest distance (3.4 AU) to our planet.

See MPEC 2024-C87 and http://astro.vanbuitenen.nl/comet/2024B2

A new comet was confirmed on Feb. 8: C/2024 B1 (Lemmon)Pre-discovery observations are dating back to October 2023. The comet is currently...

A new comet was confirmed on Feb. 8:
C/2024 B1 (Lemmon)

Pre-discovery observations are dating back to October 2023.
The comet is currently heading north on a highly inclined (i=71°) orbit. Perihelion and nearest approach both occur in October of this year (2024) at 1.6 AU from the sun and 2 AU from earth respectively.

See MPEC 2024-C86 and
http://astro.vanbuitenen.nl/comet/2024B1

Jupiter-family comet confirmed: P/2023 Y3 (ATLAS)It is actually a recovery of minor planet 2017 BQ100, which is now apparently showing...

Jupiter-family comet confirmed: P/2023 Y3 (ATLAS)

It is actually a recovery of minor planet 2017 BQ100, which is now apparently showing activity in the form of a (strongly condensed) coma.

See MPEC 2024-B139 and http://astro.vanbuitenen.nl/comet/2023Y3