symaski62

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Everything posted by symaski62

  1. mars 2020 rover

    symaski62 posted a topic in General Astronomy

    Nasa: le prochain robot martien pourrait produire de l'oxygène sur site http://www.bfmtv.com/planete/nasa-prochain-robot-martien-pourrait-produire-loxygene-site-822859.html

  2. Les méga-constellations de satellites (Starlink etc.)

    symaski62 replied to Thierry Legault's topic in General Astronomy

    hier soir 22h00 à 23h00 satellites Starlink = 28 0 à 2 mag je regarde l'etoile (nord-ouest) etoile filante = 3

  3. Sonde JUNO : destination Jupiter

    symaski62 replied to jackbauer 2's topic in General Astronomy

    https://www.jpl.nasa.gov/news/danish-instrument-helps-nasas-juno-spacecraft-see-radiation?fbclid=IwY2xjawE1ab9leHRuA2FlbQIxMAABHcfXue5ob1wfrDibLSh-JgwRQ_TbjmcOiV_k6dDBkdySPS-UUw8VmLZObw_aem_fUS13vhJQy0wodoauCVGkA

  4. Gaia, bientôt J-100!

    symaski62 replied to celinedl's topic in General Astronomy

    https://arxiv.org/pdf/2407.19219 VVV 1256−62A = Gaia DR3 5863122429179888000 https://simbad.cds.unistra.fr/simbad/sim-id?Ident=%4018065345&Name=Gaia DR3 5863122429179888000&submit=submit Spectral type = DC WD Distance (pc) = 75.6 𝑇eff (K) = 4440 R (𝑅⊙) = ----- Mass (M⊙) = 0.62 VVV 1256−62B = Gaia DR3 5863122429178232704 https://simbad.cds.unistra.fr/simbad/sim-id?Ident=%4012166803&Name=2MASS J12564352-6202041&submit=submit Spectral type = sdL3 Distance (pc) = 70.4 𝑇eff (K) = 2298 R (𝑅⊙) = 0.089 Mass (M⊙) = 0.082

  5. Nova LMC 1968

    symaski62 replied to 2SPOT's topic in Spectroscopy and photometry

    oui , nom de l'étoile : Nova LMC 1968 = LMC V1341

  6. Nova LMC 1968

    symaski62 replied to 2SPOT's topic in Spectroscopy and photometry

    13-14 mag V1341 LMC

  7. Nova Vul 2024

    symaski62 replied to artemis's topic in Spectroscopy and photometry

    19 43 07.142 +21 00 20.21 https://exofop.ipac.caltech.edu/tess/target.php?id=359952634 TIC 359952634 Star Name(s): TIC 359952634, 2MASS J19430718+2100191, Gaia DR2 1825912166619933952, WISE J194307.08+210019.1 V 17.9496 ± 0.0472 mag Gaia EDR3 1825912166619933952 parallax 0.2767 mas phot_g_mean_mag 16.678766 mag phot_bp_mean_mag 18.153076 mag phot_rp_mean_mag 15.484861 mag
  8. https://www.swpc.noaa.gov/products/planetary-k-index K5
  9. https://simbad.cds.unistra.fr/simbad/sim-id?Ident=%4080662&Name=HD 225095&submit=submit V(km/s) -41.00 ( Ha = 6562.8 ) HD 225095
  10. mise à jour 9 mag http://astro.vanbuitenen.nl/comet/2023A3
  11. wow ! https://www.aavso.org/vsx/index.php?view=detail.top&oid=18633 iot Lyr Period 0.4657778 d (11.17867 h) https://britastro.org/specdb/object_summary.php?object_id=iot Lyr Be star iot Lyr: Be Star Total Number of Spectra: 41 First Spectrum: JD 2457210.426500 \ 6 Jul 2015 22:14:09.600000 UT Latest Spectrum: JD 2459896.288000 \ 12 Nov 2022 18:54:43.200000 UT voilà https://en.wikipedia.org/wiki/Iota_Lyrae anglais TESS light curve
  12. magnitude de +4 d'ici le 27 septembre = rouge culminant aux alentours de -3 le 9 octobre. = vert http://www.aerith.net/comet/catalog/2023A3/2023A3.html
  13. désole
  14. https://science.nasa.gov/missions/webb/nasas-webb-investigates-eternal-sunrises-sunsets-on-distant-world/

  15. Etoiles Be et le "sot"

    symaski62 replied to Alef's topic in Spectroscopy and photometry

    etoilé Be La même étoile Be peut avoir un profil spectral variable selon l’angle d’observation de ce disque.
  16. 17P/Holmes (2007) http://www.aerith.net/comet/catalog/0017P/2007.html
  17. https://www.spaceweather.com/archive.php?view=1&day=11&month=07&year=2024 UNE SUPER TEMPÊTE A DÉCLENCHÉ UNE MIGRATION MASSIVE DE SATELLITES
  18. https://arxiv.org/abs/2407.07761v1 Dévoilement de la nature de glace et de gaz du centaure actif (2060) Chiron à l'aide du télescope spatial James Webb
  20. https://x.com/esa/status/1810561753219998122 youtube 19h30 CET Liftoff 20h00 CET https://www.esa.int/Enabling_Support/Space_Transportation/Ariane/Ariane_6_launch_how_to_watch_and_what_to_look_out_for
  22. https://esawebb.org/images/L1527-2/ https://esawebb.org/images/potm2406a/
  23. https://alasky.cds.unistra.fr/JWST-outreach/CDS_P_JWST_EPO/?hideProperties
  24. https://www.esa.int/Science_Exploration/Space_Science/Webb/Jupiter_s_upper_atmosphere_surprises_astronomers https://www.nature.com/articles/s41550-024-02305-9
  25. mise à jour 2022 à 2024 000-BBW-825 = T CrB