symaski62

http://pluto.jhuapl.edu/News-Center/PI-Perspectives.php?page=piPerspective_12_20_2018

http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20181218

https://carnegiescience.edu/news/discovered-most-distant-solar-system-object-ever-observed

OMG ! nouveau 2018 VG18 "Farout" https://en.wikipedia.org/wiki/2018_VG18 500 km diamètre https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018 VG18;old=0;orb=1;cov=0;log=0;cad=0#orb EPOCH= 2458447.5 ! 2018-Nov-25.00 (TDB) Residual RMS= .13787 EC= .7717437510349855 QR= 21.73846988992007 TP= 2388887.3454751824 OM= 247.4427078740553 W= 32.88824233518356 IN= 31.71377520866712 A= 95.23712927242569 MA= 73.7658188901012 ADIST= 168.7357886549313 PER= 929.43208 N= .001060461 ANGMOM= .106757005 DAN= 23.36994 DDN= 109.43545 L= 276.2572425 B= 16.5853487 MOID= 20.76670074 TP= 1828-Jun-13.8454751824 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 3.2498 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. 1828 année !!!!!!

https://mars.nasa.gov/insight/multimedia/raw-images/?order=sol+desc%2Cdate_taken+desc&per_page=50&page=0&mission=insight SOL 0 => 2 image SOL 1 => 3 nouveau image

en direct

NASA TV en direct

20h00 CET soir en direct

https://www.youtube.com/channel/UCLA_DiR1FfKNvjuUpBHmylQ NASA TV 26/11/2018 20h00 CET

http://www.spaceweather.com/archive.php?view=1&day=21&month=11&year=2018

https://minorplanetcenter.net/iau/NEO/pccp_tabular.html https://cgi.minorplanetcenter.net/cgi-bin/showobsorbs.cgi?Obj=DM001&orb=y http://astro.vanbuitenen.nl/comet/DM001 C/2018 V1 (Machholz-Fujikawa-Iwamoto)

Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 6.1 M2= n.a. k1= 6. k2= n.a. PHCOF= n.a. avant (page 1) M1= 6.3 après M1= 6.1 mise à jour

https://theskylive.com/c2018v1-info vénus et C/2018 V1

https://www.minorplanetcenter.net/mpec/K18/K18VF1.html Orbital elements: C/2018 V1 (Machholz-Fujikawa-Iwamoto) T 2018 Dec. 3.51776 TT MPCW q 0.3867143 (2000.0) P Q Peri. 88.82735 +0.61786175 +0.63841605 Node 128.72900 +0.24470616 -0.71088133 e 1.0 Incl. 143.95908 +0.74723875 -0.29508081 From 313 observations 2018 Nov. 8-11.

avant comète DM001 après C/2018 V1 (Machholz-Fujikawa-Iwamoto) mise à jour

https://arxiv.org/abs/1810.08977 https://fr.wikipedia.org/wiki/(90482)_Orcus Vanth (lune) => 443 +/- 10 km Orcus => 946.3 +/- 73 km

https://arxiv.org/abs/1810.07811 45 Kuiper Belt => 2025 à 2040 année

voilà

https://lanceurs.destination-orbite.net/videotransmission.php?id=17 https://www.tickcounter.com/countup/60832/insight-discovery-12-et-marco-1-et-2

@biver oui, V* V645 Cen -- Flare Star (HIP 70890) http://simbad.u-strasbg.fr/simbad/sim-id?Ident=%403379714&Name=V* V645 Cen&submit=submit Parallaxes (mas): 769.8 mas (1995 année) Gaia DR2 5853498713160606720 parallax (mas): 768.5004 mas (2018 année) phot_g_mean_mag: 8.9536 mag (green) phot_bp_mean_mag: 11.3829 mag (bleu) phot_rp_mean_mag: 7.5864 mag (red) teff_val: 3295.50 K (kelvin)

bonjour KIC 8462852 Gaia DR1 2081900940499099136 (2016 année) Parallaxes (mas): 2.55 http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ5ae24db836e8&-out.add=.&-source=I/345/gaia2&-c=301.56432344243 44.45684219166,eq=ICRS,rs=0.005&-out.orig=o Gaia DR2 2081900940499099136 (2018 année) Parallaxes (mas): 2.2185 = 451 +/- 5 parsecs = 1471 +/- 16 light years mag : 11.762624 teff_val (K) : 5899.25 radius_val (sunRad) : 1.65 lum_val (solLum) : 2.963 -------------------------------- Gaia DR2 2635476908753563008 (TRAPPIST-1) http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ5ae2c7f8067f&-out.add=.&-source=I/345/gaia2&-c=346.62639186971 -5.04346180221,eq=ICRS,rs=0.005&-out.orig=o parallax : 80.4512 mas phot_g_mean_mag: 15.6451 mag phot_bp_mean_mag: 18.9982 mag phot_rp_mean_mag: 14.0967 mag teff_val: 3352.33 K

https://theskylive.com/c2017k2-tracker

https://arxiv.org/abs/1803.04543 Possible Bright Starspots on TRAPPIST-1 The M8V star TRAPPIST-1 hosts seven roughly Earth-sized planets and is a promising target for exoplanet characterization. Kepler/K2 Campaign 12 observations of TRAPPIST-1 in the optical show an apparent rotational modulation with a 3.3 day period

https://arxiv.org/abs/1802.10380 Note on the dynamical evolution of C/2017 K2 PANSTARRS 1.79334 AU => close 2022 année