skycoor(1)

📦
version 3.9.7 · 2 versions
, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

✨ skycoor — the manual, but make it a group chat ✨

okay bestie, welcome to skycoor, a General Commands Manual page and honestly? it's giving coordinate-glow-up. this is the tool that takes your sky coordinates and yeets them between systems until they're cute and correct. let's get into it 💅

🌸 NAME 🌸

skycoor — Convert coordinates ✨

🎀 SYNOPSIS 🎀

skycoor [-bdgjv] [-n ndec] ra1 dec1 sys1 ... ran decn sysn

or

skycoor [-vbjg] [-n ndec] @listfile

two whole ways to run her, pick your fighter 💖

🦋 DESCRIPTION 🦋

so here's the tea, bestie: skycoor converts coordinates between the J2000, B1950, and galactic coordinate systems. it rounds to a specified number of decimal places and prints in degrees or in hh:mm:ss.sss dd:mm:ss.sss. literally either format, she's flexible like that 🫶

your input coordinates can also be in either format, no gatekeeping. and the system — J2000, B1950, or galactic — can be in upper or lower case, because she's not gonna fight you about capitalization, that's so not the vibe.

⚠️ but listen: no spaces are allowed within the individual coordinates. none. zero. not even one. keep them together fr fr 😭

💖 OPTIONS 💖

  • -b — B1950 (FK4) output. old-school era, but make it iconic ✨
  • -d — RA and Dec output in degrees 🎀
  • -e — ecliptic longitude and latitude output 🌞
  • -g — galactic longitude and latitude output 🌌
  • -i r|d| — input units, bestie: r means radians, d** means degrees, and anything else means hh:mm:sss dd:mm:sss 👑
  • -j — J2000 (FK5) output. the modern main character 💅
  • -n <num> — number of decimal places in output RA seconds 🔢
  • -o <num> — offset coordinates by this many arcseconds 🫧
  • -p — RA and Dec proper motion in milliarcseconds/year 🏃♀️
  • -q — output system, including equinox 🌈
  • -r <RA> <Dec> <RA> <Dec> — angular separation between two RA, Dec pairs 📐 (two whole pairs, she needs all four numbers)
  • -s — output ra= dec= epoch= radecsys= for sethead 🌸
  • -v — print more intermediate information. she's an open book 📖
  • -w — convert RA, Dec equatorial coordinates to x,y,z 🧊
  • -x — convert x,y,z equatorial coordinates to RA, Dec 🧊➡️✨
  • -y <epoch> — epoch of coordinates in years 📅

💜 AUTHOR 💜

Jessica Mink, SAO (jmink@cfa.harvard.edu) — the queen who made this happen, we stan 👑

that's the whole page bestie, no cap. go convert some coordinates, you've got this 💅✨

signing off from WCSTools, dated 9 November 2001 — yeah she's been slaying since 2001 and she's still that girl 🌟🫶

📦 where this page comes from