跳到主要內容

mars 2020 ephemeris 

telnet horizons.jpl.nasa.gov 6775
type at prompt: mars2020

apparent RA and DEC:

*******************************************************************************
Target body name: Mars2020 (spacecraft) (-168)    {source: Mars2020_merged}
Center body name: Earth (399)                     {source: Mars2020_merged}
Center-site name: GEOCENTRIC
*******************************************************************************
Start time      : A.D. 2020-Aug-01 00:00:00.0000 UT    
Stop  time      : A.D. 2020-Aug-15 00:00:00.0000 UT    
Step-size       : 1440 minutes
*******************************************************************************
Target pole/equ : No model available
Target radii    : (unavailable)                                              
Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)}
Center pole/equ : High-precision EOP model        {East-longitude positive}
Center radii    : 6378.1 x 6378.1 x 6356.8 km     {Equator, meridian, pole}  
Target primary  : Earth
Vis. interferer : MOON (R_eq= 1737.400) km        {source: Mars2020_merged}
Rel. light bend : Sun, EARTH                      {source: Mars2020_merged}
Rel. lght bnd GM: 1.3271E+11, 3.9860E+05 km^3/s^2                            
Atmos refraction: NO (AIRLESS)
RA format       : HMS
Time format     : CAL
EOP file        : eop.200731.p201022                                          
EOP coverage    : DATA-BASED 1962-JAN-20 TO 2020-JUL-31. PREDICTS-> 2020-OCT-21
Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s
Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO )
Table cut-offs 2: Solar elongation (  0.0,180.0=NO ),Local Hour Angle( 0.0=NO )
Table cut-offs 3: RA/DEC angular rate (     0.0=NO )                          
*******************************************************************************
 Date__(UT)__HR:MN     R.A.__(a-apparent)__DEC
**********************************************
$$SOE
 2020-Aug-01 00:00     00 29 28.19 +23 12 16.2
 2020-Aug-02 00:00     00 32 41.83 +23 24 21.8
 2020-Aug-03 00:00     00 34 09.04 +23 29 38.0
 2020-Aug-04 00:00     00 34 57.78 +23 32 27.3
 2020-Aug-05 00:00     00 35 27.50 +23 34 02.4
 2020-Aug-06 00:00     00 35 45.86 +23 34 50.9
 2020-Aug-07 00:00     00 35 56.45 +23 35 04.8
 2020-Aug-08 00:00     00 36 01.19 +23 34 50.0
 2020-Aug-09 00:00     00 36 01.18 +23 34 09.4
 2020-Aug-10 00:00     00 35 57.10 +23 33 04.3
 2020-Aug-11 00:00     00 35 49.41 +23 31 35.1
 2020-Aug-12 00:00     00 35 38.41 +23 29 41.9
 2020-Aug-13 00:00     00 35 24.33 +23 27 24.5
 2020-Aug-14 00:00     00 35 07.35 +23 24 42.4
 2020-Aug-15 00:00     00 34 47.63 +23 21 35.2

orbitsimulator 

Hatenablog search using jpl horizons query
標籤：

留言

張貼留言

這個網誌中的熱門文章

Scythians 斯泰基 塞種 西古提人

900 BC - 200 AD British museum   Tomb of scythe prince, Buktarma valley, 1200 masl, Google map Herodotus   絲路上的帝國 Biblegeography   哥羅西書 3：11  在此並不分希利尼人、猶太人、受割禮的、未受割禮的、化外人、 西古提人 、為奴的、自主的．惟有基督是包括一切、又住在各人之內。 塞種 塞迦  saka 史記漢書 西域傳： 塞種  ctext 昔匈奴破大月氏，大月氏西君大夏，而塞王南君罽賓。塞種分散，往往為數國。自疏勒以西北，休循、捐毒之屬，皆故 塞種 也。 匈奴列傳 Ctext ：塞王 《史記》在《大宛列傳》與《匈奴列傳》中， 詳細 記錄了中亞至天山一帶的塞種（塞王、塞地）狀況。例如，文中記載了月氏西破走塞王，導致塞人南遷越過懸度（今帕米爾高原及克什米爾一帶） Baike Genetic history   Genetics  Nih griffin  ? Scytho-Siberian  world 塞迦 saka  wiki Disappeared? Sarmatians （ 薩爾馬泰 ， 奄蔡 史記 ,  Aorsi ）and goths YouTube  
張貼留言
閱讀完整內容

calculate pH of phosphoric acid

Question: adding 1/4 teaspoon of 10% phosphoric acid  to 19 litres of water, what will be the pH? Let's go through the calculations step by step. Step 1. Convert mass ( or volume) of 10% phosphoric acid to mole per litre ( mol/L) The above calculation shows that 1/4 tsp of H3PO4 acid is 6.97e-5 mol/L Step 2. Input this value to BATE (or other app) to calculate pH The answer: pH = 4.16, ie too acidic !? If you use pipette instead of teaspoon,  1 drop = 0.05ml. So 1/4 TSP means roughly 25 drops If you actually aim for pH 5.6 (which is optimum pH for mashing), conc will be 2.51 e-6, or 1/100 tsp , 0.044 ml, roughly 1 drop Let's roll back a bit. From  recipes of   BarleyWine , summer rye , hefe Gordon Strong suggested to use 1/4 teaspoon of 10% phosphoric acid, which is targeting pH of 5.5..... Discussion on  homebrewtalk  forum. However using online BF water calc , Sparge pH would be 4.6. but he also added 1 tsp of CaCl2. 2H20. Mash pH change from 5.7 t...
張貼留言
閱讀完整內容

Formwork 模板

流程 Bar bending schedule 圖則 HKHA good practice   目的 重點 斜面 企棟 樓梯 模組內部 測量放線 紮鐵/鋼筋 bar bending Concrete pressure and formwork   Fluid Pressure = Wall height (ft) * 150 pound per cubic feet for example, 10 feet wall is roughly 1500 pound per sq ft.( Psf) Avoid too much pressure   Traditional concrete formwork india Titech jp Ch 1 Housing authority guide  on concrete  Constructor Formwork solutions   模板周轉次數  與成本 安裝模板 formwork： 釘板工序： 企棟 倒石矢 concrete  建造業： 鋼筋屈紮&樓宇結構 樓面陣工藝 筷子廊： 工藝測試： 土木工程 樓宇： 中工測試： 四大常用工具：鎚仔，拉尺，木工筆，線秤（666g) 木釘： 2" x11# Impact force cal 釘板鎚： 木井方 23吋長 10 oz(鎚頭重） 羊角曲尾 有磁石 售賣地點： 黃宏利 三行工具 土牛  中號有磁防滑加長柄 450mm 700克 01776 Dogyu tubular steel handle kariwaku hammer w/magnet 450mm. Amazon jp And magnetic one piece panel with hanging hardware Smooth  03799, anti slip (waffle)03800 rakuten 20 oz (570g)hickory 合桃木 木柄鎚 larry huan Toolguyd  damping ratio: Stanley fatmax anti vibe any good?see here Choosing a hammer，it's matter of pers...
張貼留言
閱讀完整內容