symaski62

Le 09/08/2023 à 02:41, BobMarsian a dit :

  - (2060) Chiron :  a ~ 13,7 UA,  P ~ 50.6 ans,  D = 196 ± 34 km (Braga-Ribas et al., 2023)
   - Anneau interne :  r = 325 ± 16 km
   - Anneau externe :  r = 423 ± 11 km
   - Disque ténu, bord externe :  r ~ 580 km

merci

https://download.esa.int/esoc/downloads/Ariane_6_test_campaign-questions_and_answers.pdf

Uranus  

13 mag   SN 2023ixf  

question ?   

https://groups.io/g/RSpec-Astronomy/message/13110

30 juin  2023   

http://astro.vanbuitenen.nl/comet/12

12P/Pons-Brooks   

IRAS 15398-3359   

https://arxiv.org/abs/2208.10673

https://jwstfeed.com/PostView/FeedPost?ci=1689968441_110753772085656888

Citation

landru79 | James # Webb Space Telescope Stellar Populations and the Interstellar Medium targname: IRAS 15398-3359 instrume: # MIRI NASA/ESA/CSA/STScI/j. Roger

https://en.wikipedia.org/wiki/SPT0418-47   

SPT0418-47

https://arxiv.org/abs/2307.10115

https://jwstfeed.com/Home/ShowFeed?searchTerm=SPT0418-47

une étoile * candidate * fortement agrandie (AT 2023mlz) dans les récentes observations NIRISS de l'amas de galaxies Abell 2744.

SN 1987A     wow !   

https://arxiv.org/abs/2307.06692

C/2014 UN271 (Bernardinelli-Bernstein)

James #Webb Space Telescope

Le 19/06/2023 à 18:09, symaski62 a dit :

https://www.nasa.gov/feature/goddard/2023/webb-rules-out-thick-carbon-dioxide-atmosphere-for-rocky-exoplanet

 

TRAPPIST-1 c   

https://arxiv.org/pdf/2306.10150.pdf     

Citation

No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c

C/2023 A3 (Tsuchinshan-ATLAS)    

http://astro.vanbuitenen.nl/comet/2023A3

WISE J035934.06−540154.6  >  http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WISE+J035934.06−540154.6&submit=SIMBAD+search

Brown Dwarf

Spectral type: Y0 C

https://arxiv.org/abs/2306.11807

https://arxiv.org/abs/2306.10119

https://arxiv.org/pdf/2306.00287.pdf

https://www.wis-tns.org/astronotes/astronote/2023-180

Radio Detection of SN2023ixf at 10 GHz

Citation

We find evidence for statistically significant radio emission at the location of SN2023ixf with a preliminary flux density of 41 +/- 8 uJy. Previously, our first epoch of observations led to a non-detection (Fnu < 33 uJy at 10 GHz on May 23rd 2023, 4 days since discovery, AstroNote #2023-146).

voilà   

https://www.nasa.gov/feature/goddard/2023/webb-rules-out-thick-carbon-dioxide-atmosphere-for-rocky-exoplanet

TRAPPIST-1 c   

https://jwstfeed.com/PostView/FeedPost?ci=1686966309_publicdata20230619

Target Name: SN2023IXF
Keywords: Supernovae
Start Time: 6/21/2023 7:21:07 AM (UTC)
Science Instument & Mode: NIRSpec Fixed Slit Spectroscopy, MIRI Low Resolution Spectroscopy