symaski62

trop   vent     report     24 heures 

22/02/2018    15h17 CET  

voilà 

https://theskylive.com/roadster-info

https://theskylive.com/roadster-tracker  en direct

http://www.minorplanetcenter.net/db_search/show_object?utf8=✓&object_id=C%2F2017+K2

mise à jour   image    +18 mag  total    

2018 01 12.81740	17 51 30.81	+56 00 09.4	18.1 T	349 – Ageo	MPC 107776

avent

1/aorigine = 0.00003028+-0.0000094 (MPEC 2017-V13)

après 

recip semimajor axis orig (AU)    0.00004445

https://www.projectpluto.com/temp/spacex.htm

Created 2018 Feb 8 21:52:59 UT using Find_Orb
 

Orbital elements (heliocentric):  2018-017A
   Perihelion 2018 Feb 4.203465 +/- 0.001 TT =  4:52:59 (JD 2458153.703465)
Epoch 2018 Feb 10.0 TT = JDT 2458159.5   Earth MOID: 0.0002   Ma: 0.0009
M   3.68515 +/- 0.0016              (J2000 ecliptic)          Gray
n   0.63575070 +/- 0.000176         Peri.  177.28090 +/- 0.00022
a   1.33950646 +/- 0.000247         Node   317.46990 +/- 0.0010
e   0.2638608 +/- 0.000136          Incl.    1.10989 +/- 0.00058
P   1.55/566.25d           H 25.7   G  0.15   U  6.9
q 0.98606318 +/- 3.95e-8    Q 1.69294974 +/- 0.000494
53 of 57 observations 2018 Feb. 8 (14.0 hr); mean residual 0".414

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

https://ssd.jpl.nasa.gov/horizons.cgi

Ephemeris Type [change] : 	OBSERVER
Target Body [change] : 	SpaceX Roadster (spacecraft) (Tesla) [-143205]
Observer Location [change] : 	Mars (body center) [500@499]
Time Span [change] : 	Start=2020-09-01, Stop=2020-10-31, Step=1 h
Table Settings [change] : 	defaults
Display/Output [change] : 	default (formatted HTML)

https://www.youtube.com/watch?v=wbSwFU6tY1c

mise à jour    20h50  cet

https://spaceflightnow.com/2018/01/29/live-from-launch-pad-39a-members-only/

en direct   vidéo  

https://www.youtube.com/watch?v=wbSwFU6tY1c

22h30 cet  demain

bientôt   lune  rouge 

75 % plus  éclipse lune

https://arxiv.org/abs/1801.06957

EPIC 210897587: A Bright Metal-Poor M Dwarf with Three Transiting Super-Earths

3 planètes   ! 

1:18  pause,  ( paramètres =>  vitesse  0.25 ) 
 
début: 
 
1)  18.85 °C => 292°K 
 
2)  -253.15°C   =>  20°K 
 
3)  -168.15°C  => 105°K 
 
4) -198.15°C => 75°K 
 
5) -153.15°C => 120°K 
 
6) -133.15°C => 140°K 
 
7)  18.85°C  =>  292°K 
 
FIN 

https://arxiv.org/abs/1801.02554

Citation

 

Early 2017 observations of TRAPPIST-1 with Spitzer

 

To further advance our understanding of these planets' compositions, energy budgets, and dynamics, we are carrying out an intensive photometric monitoring campaign of their transits with the Spitzer Space Telescope. In this context, we present 60 new transits of the TRAPPIST-1 planets observed with Spitzer/IRAC in February and March 2017. 

 

pages 7   =>  Table 1. Updated system parameters: median values and 1-σ limits of the posterior PDFs derived from our global MCMC analysis

 

TRAPPIST-1 à  Spitzer Space Telescope     février à mars  2017   

https://arxiv.org/abs/1801.00738

The hidden depths of planetary atmospheres

We provide results for a few exoplanets, notably those in the TRAPPIST-1 system, to help the scientific community estimate the impact of refraction on the size of spectral features without radiative transfer calculations, and thus help refine planned James Web Space Telescope observations.

https://arxiv.org/abs/1712.05669

The Pluto System After New Horizons

page  49 et 50   Pluto  et  (N2 et CH4)  HAZE   

page  55 et 56     planète et lune   

https://arxiv.org/abs/1712.01911

Stellar parameters for TRAPPIST-1

http://www.brucegary.net/ts5/

  0.01%  !

https://arxiv.org/abs/1711.10612

Recent Photometric Monitoring of KIC 8462852, the Detection of a Potential Repeat of the Kepler Day 1540 Dip and a Plausible Model

https://arxiv.org/abs/1711.09128

Role of the global water ocean on the evolution of Titan's primitive atmosphere

mise à jour,   @biver   merci