Near-Earth asteroid 2012 DA14: star map (geocentric)

Asteroid 2012 DA14 close approach: geocentric path across the stars

Asteroid 2012 DA14 close approach: geocentric path across the stars

The map above shows the path in the sky of asteroid 2012 DA14 around its very close approach, next 15 Feb. 2013. Positions are calculed for an ideal observer sitting at the center of our planet. Each point is calculated every 15 minutes.

The plot makes easy to see how fast will be the apparent motion of 2012 DA14, especially very close to its minimum distance from the Earth (19:25 UT).

This plot was made by Gianluca Masi using TheSkyX (Software Bisque) and geocentric ephemerids by the Minor Planet Center.

 

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2 Responses

  1. Umby says:

    Ciao Gianluca,
    sto usando questi dati su Stellarium ma ho mappe e tempi molto diversi dai tuoi per queste coordinate: 43°19’N – 11°19E.
    I dati orbitali per 2012DA14 li ho presi da http://ssd.jpl.nasa.gov/
    orbit_Epoch=2456200.5 http://ssd.jpl.nasa.gov/
    orbit_Eccentricity=0.1081388835717488
    orbit_SemiMajorAxis=1.001838112285834
    orbit_Inclination=10.33720584174628
    orbit_AscendingNode=147.2623820320906
    orbit_ArgOfPericenter=271.0772652068994
    orbit_MeanAnomaly=299.9987173708969
    orbit_MeanMotion=0.9828964126987357

    Grazie per l’aiuto che vorrai darmi 🙂

    • Gianluca Masi says:

      per un passaggio così ravvicinato, i software non sono accurati. Meglio ricorrere alle effemeridi del JPL o Minor Planet Center, avendo cura di selezionare correttamente la posizione geografica!

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