
\usepackage[utf8]{inputenc}

\def\d{{\rm d}}%

\newfam\vefam%
\font\tenve=ugrot at 9.5pt%
\font\eightve=ugrot at 7.6pt%
\font\sixve=ugrot at 5.7pt%
\textfont\vefam=\tenve%
\scriptfont\vefam=\eightve%
\scriptscriptfont\vefam=\sixve%

\def\vec#1{{\fam\vefam\tenve #1}}%

% astronomical symbols
\font\astrosymten   = astrosym scaled 625
\font\astrosymeight = astrosym scaled 500
\font\astrosymseven = astrosym scaled 438
\font\astrosymsix   = astrosym scaled 375
\font\astrosymfive  = astrosym scaled 312

\def\mesic{%
  {\mathchoice%
    {\hbox{\kern.02em\lower.1em \hbox{\astrosymten  \char210}}}%
    {\hbox{\kern.02em\lower.1em \hbox{\astrosymten  \char210}}}%
    {\hbox{\kern.01em\lower.1em \hbox{\astrosymeight\char210}}}%
    {\hbox{\kern.00em\lower.09em\hbox{\astrosymsix  \char210}}}%
  }%
}

