symaski62

source : spaceweather C/2020 F3

voilà

blanc = vénus et C/2020 F3 demain matin 5h37 CEST attention soleil 5h42 CEST

https://arxiv.org/abs/2006.14712 TRAPPIST-1 Superflare Occurrence and Planetary Habitability

le premier semaine juillet 2 à 4 magnitude

https://www.spaceweather.com/archive.php?view=1&day=24&month=06&year=2020 C/2020 F3

6 mag

https://www.spaceweather.com/archive.php?view=1&day=09&month=06&year=2020 wow ! C/2020 F8

https://www.spaceweather.com/archive.php?view=1&day=02&month=06&year=2020 INFERIOR CONJUNCTION OF VENUS: Tomorrow, June 3rd, Venus will pass almost directly between the Earth and the sun. This is having a strange effect on the planet's shape. "It is like a ring of fire," says Didier Favre, who sends this picture from Brétigny-sur-Orge, France: https://spaceweathergallery.com/indiv_upload.php?upload_id=163013

http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Nova+Del+2013&submit=SIMBAD+search confirmés variable (V) Gaia DR2 1817026669528976768 Parallaxes (mas) : 0.3814 phot_g_mean_mag : 13.8218 mag phot_bp_mean_mag : 13.7600 mag phot_rp_mean_mag : 13.5303 mag teff_val : 8299.67 K

http://www.aerith.net/comet/catalog/2019Y4/2019Y4.html JPL/HORIZONS ATLAS (C/2019 Y4) 2020-Mar-18 21:59:13 Rec #:90004446 (+COV) Soln.date: 2020-Mar-09_07:19:55 # obs: 586 (2019-2020) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458884.5 ! 2020-Feb-05.0000000 (TDB) RMSW= n.a. EC= .9992446427560784 QR= .2528511246809229 TP= 2459000.515108983 OM= 120.569994312319 W= 177.4078594843987 IN= 45.38173634030989 A= 334.7437609364624 MA= 359.98132976049 ADIST= 669.2346707482438 PER= 6124.5890168075 N= .000160929 ANGMOM= .012230574 DAN= 284.34694 DDN= .25298 L= 298.7486958 B= 1.8447771 MOID= .63108897 TP= 2020-May-31.0151089830 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.7 M2= 13.9 k1= 21.5 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#4, data arc: 2019-12-28 to 2020-03-05 2: k1=21.5, k2=5., phase coef.=0.03;

http://www.aerith.net/comet/catalog/A06478/2020.html

C/2019 U6 (Lemmon) 7 magnitude ( aujourd’hui )

http://www.aerith.net/comet/catalog/2019Y4/2019Y4.html

baisse 8 magnitude

vénus -4.2 magnitude

mise à jour 7.4 magnitude possible ?

https://www.spaceweather.com/archive.php?view=1&day=22&month=05&year=2020 Comet SWAN (C/2020 F8)

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 !