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  2. Molniya orbit - Wikipedia

    en.wikipedia.org/wiki/Molniya_orbit

    Download as PDF; Printable version; ... is the orbital inclination, is the ... The exact height of a satellite in a Molniya orbit varies between missions, but a ...

  3. Molniya (satellite) - Wikipedia

    en.wikipedia.org/wiki/Molniya_(satellite)

    Download as PDF; Printable version; ... (and the upgrade Molniya 1T) ... and the orbital period needed to be approximately half a sidereal day. These two factors ...

  4. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    Molniya orbit: A semi-synchronous variation of a Tundra orbit. For Earth this means an orbital period of just under 12 hours. Such a satellite spends most of its time over two designated areas of the planet. An inclination of 63.4° is normally used to keep the perigee shift small. [15]

  5. Comparison of retired orbital launch systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_retired...

    Download as PDF; Printable version; In other projects ... This article contains too many charts, tables, or data. Please help cleaning ... NPO Molniya. 58.8 m 30,000 ...

  6. Highly elliptical orbit - Wikipedia

    en.wikipedia.org/wiki/Highly_elliptical_orbit

    A highly elliptical orbit (HEO) is an elliptic orbit with high eccentricity, usually referring to one around Earth.Examples of inclined HEO orbits include Molniya orbits, named after the Molniya Soviet communication satellites which used them, and Tundra orbits.

  7. IRS-1A - Wikipedia

    en.wikipedia.org/wiki/IRS-1A

    Toggle the table of contents. ... Download as PDF; Printable version; ... (570 mi), an inclination of 99.01°, and an orbital period of 102.7 minutes. [2] Mission

  8. Geocentric orbit - Wikipedia

    en.wikipedia.org/wiki/Geocentric_orbit

    Molniya orbit A highly elliptical orbit with inclination of 63.4° and orbital period of ½ of a sidereal day (roughly 12 hours). Such a satellite spends most of its time over a designated area of the Earth. Tundra orbit A highly elliptical orbit with inclination of 63.4° and orbital period of one sidereal day (roughly 24 hours). Such a ...

  9. Molniya 1 - Wikipedia

    en.wikipedia.org/wiki/Molniya_1

    A total of 7 Molniya-1 satellites were launched, 5 of them successfully. In 1966, due to the heavy workload of OKB-1, the production of the Molniya-1 satellite was transferred to Branch No. 2 of OKB-1, nowadays Information Satellite Systems Reshetnev, and all subsequent satellites of the Molniya series were manufactured at this enterprise.