symaski62

https://arxiv.org/abs/2005.08881

On 28th January 2018, the large Trans-Neptunian Object (TNO) 2002TC302

The resulting ellipse has major and minor axes of 543 ± 18 km and 460 ± 11 km

jusque que 24 mai  mini  6 magnitude 

partir   24 mai  à  21  juin,   6 à 8 magnitude 

https://www.spaceweather.com/archive.php?view=1&day=18&month=05&year=2020

Comet ATLAS (C/2019 Y4)

La société SpaceX a mis en ligne un petit simulateur gratuit utilisant la même interface que celle dont se servent les astronautes pour arrimer le Dragon 2 à la station spatiale internationale.  (3D)

Dites-nous si vous y arrivez : https://iss-sim.spacex.com

   oh no !    ne baisse pas !      8 mag ! 

  possible ?! 

ne baisse pas ...   

https://www.spaceweather.com/archive.php?view=1&day=07&month=05&year=2020

https://arxiv.org/abs/2005.02541

A naked-eye triple system with a nonaccreting black hole in the inner binary

HR 6819

The radial-velocity semi-amplitude of 61.3 km/s of the inner star and its minimum (probable) mass of 5.0 Msun (6.3 +- 0.7 Msun) imply a mass of the unseen object of >= 4.2 Msun (>= 5.0 +- 0.4 Msun), that is, a black hole (BH).

mise à jour   0.4 mag  coucher  betelgeuse   

prochaine   lever  betelgeuse

http://astro.vanbuitenen.nl/comet/2020F8

http://www.aerith.net/comet/catalog/2020F8/2020F8.html

C/2020 F8 ( SWAN ) =>  13 mai 2020  (5 magnitude) 

FIN

------------

http://www.astrosurf.com/topic/133098-comète-c2019-y4-atlas-crash-omg/

C/2019 Y4 ( ATLAS ) =>  23 mai 2020  (8 magnitude)

FIN

------------ 

http://astro.vanbuitenen.nl/comet/2019U6

http://www.aerith.net/comet/catalog/2019U6/2019U6.html

C/2019 U6 ( Lemmon ) => 29 juin 2020 (6.5 magnitude)

FIN

------------

http://www.astrosurf.com/topic/134368-nouvelle-comète-c2020-f3/

http://astro.vanbuitenen.nl/comet/2020F3

http://www.aerith.net/comet/catalog/2020F3/2020F3.html

C/2020 F3 ( NEOWISE )  =>  23 juillet 2020   (1 magnitude) 

en cours

2020 année  =   4 comète ☄☄☄☄

https://www.nasa.gov/feature/goddard/2020/hubble-watches-comet-atlas-disintegrate-into-more-than-two-dozen-pieces

Hubble Watches Comet ATLAS Disintegrate Into More Than Two Dozen Pieces

5.5 mag   !  C/2020 F8 

http://astro.vanbuitenen.nl/comet/2020F8

C/2020 F8 (SWAN)

6.2 mag   

http://www.minorplanetcenter.net/db_search/show_object?utf8=✓&object_id=52768

1998 OR2  

http://astro.vanbuitenen.nl/newcomets

C/2020 F8  

https://www.spaceweather.com/archive.php?view=1&day=19&month=04&year=2020

The case for Comet SWAN being a hyperbolic comet is not ironclad. Based on an observation arc of only 3 days, JPL reports the eccentricity of SWAN's orbit as 1.1 +/- 0.2.  The error bars are still large. The uncertainties will shrink, however, as more observations are added to the database in the nights ahead. Stay tuned for updates.

OMG !    CRASH !   

https://www.spaceweather.com/archive.php?view=1&day=16&month=04&year=2020

mise à jour      4.5 mag 

@Mister Comets   wow !

C/2020 F3     possible ?   12 mag  ?

http://astro.vanbuitenen.nl/comet/2020F3

https://www.spaceweather.com/archive.php?view=1&day=13&month=04&year=2020

13 mai  2020   C/2020 F8   3 mag  

voilà !    0.6 mag  !