ASIASAT 8 (AMOS-7)

ASIASAT 8, cataloged under NORAD ID 40107 and internationally designated 2014-046A, is a geostationary communications satellite that occupies a fixed position above the equator in Earth's geosynchronous belt. Launched in August 2014, the spacecraft has undergone an unusual operational history, transitioning from service under the Asia Satellite Telecommunications Company (AsiaSat) — a Hong Kong-based operator — to an Israeli communications role, where it was redesignated AMOS-7. The satellite remains in orbit as of the time of writing, continuing to function as a communications relay platform high above the Earth's surface.

Mission and Purpose

AsiaSat 8 was originally procured and deployed by AsiaSat, a company headquartered in Hong Kong with a long history of providing satellite-based communications services across the Asia-Pacific region. In its initial configuration, the satellite was intended to expand AsiaSat's broadcast and data relay capacity, serving the diverse telecommunications needs of a region characterized by vast geographic distances and rapidly growing demand for broadband and direct-to-home television services.

The satellite's subsequent renaming to AMOS-7 reflects a significant shift in operational context. The AMOS series is historically associated with Israeli satellite communications, and the transition of this spacecraft into that program represented an effort to extend coverage and service capacity to the Middle East and Africa alongside continued Asian operations. The precise commercial arrangements underlying this transfer are not fully detailed in the public orbital catalog record, and the specific mission type and current operational status are not confirmed in available catalog data. What is clear is that the satellite's physical infrastructure — its transponders, power systems, and pointing capabilities — has been applied across more than one regional communications role during its lifetime, an increasingly common pattern among high-value geostationary assets as operators seek to maximize the return on their substantial orbital investments.

Communications satellites in geostationary orbit like ASIASAT 8 typically carry a complement of transponders operating across various frequency bands — commonly C-band, Ku-band, and sometimes Ka-band — allowing them to relay television broadcasts, telephone traffic, internet data, and government or enterprise communications. The specific payload configuration of this spacecraft is not confirmed in the orbital catalog record maintained here, so no specific transponder counts or frequency assignments are stated as fact.

Orbit and Tracking

ASIASAT 8 occupies a near-perfect geostationary orbit, one of the most precisely maintained and operationally valuable orbital regimes available to commercial satellites. Its current tracked apogee stands at 35,801 km and its perigee at 35,789 km, placing it within a remarkably narrow band around the theoretical geostationary altitude of approximately 35,786 km above the equator. The difference between apogee and perigee of just 12 km indicates an exceptionally circular orbit, consistent with a well-maintained operational geostationary spacecraft whose operators are actively performing stationkeeping maneuvers to counteract the perturbations — primarily from the gravitational influence of the Moon and Sun, as well as solar radiation pressure — that would otherwise cause the orbit to drift and elongate over time.

The satellite's orbital inclination is recorded at 0.0°, meaning it travels directly above the equatorial plane without the north-south oscillation that develops in aging or uncontrolled geostationary satellites as those same lunar and solar forces tug the orbital plane away from the equator. Maintaining this zero-inclination condition requires periodic north-south stationkeeping thruster firings, and its presence here is a strong indicator that the satellite remains under active control.

With an orbital period of 1,436.2 minutes — very nearly 24 hours — the satellite completes one orbit in almost exactly the same time it takes the Earth to complete one rotation. This synchronization is the defining characteristic of the geostationary orbit: from the ground, a satellite in such an orbit appears essentially stationary against the sky, hovering over a fixed point above the equator. This property makes geostationary satellites uniquely suited to continuous, broad-area communications coverage, as a single spacecraft can maintain uninterrupted line-of-sight contact with a large fraction of the Earth's surface — roughly one-third — from its fixed vantage point approximately 36,000 km up.

ASIASAT 8 carries NORAD catalog number 40107 and was assigned the international designator 2014-046A, indicating it was the primary payload (designated "A") of the 46th orbital launch of the year 2014. These identifiers are used by tracking networks worldwide — including the U.S. Space Surveillance Network and the systems that power this site — to maintain continuous catalog records of the object's position, velocity, and orbital evolution.

Design and Operator

The spacecraft was manufactured by Lanteris Space Systems and has a recorded mass of 4,535 kg. This places it firmly in the class of large commercial geostationary communications satellites, which typically range from around 2,000 kg for smaller platforms to well over 6,000 kg for the largest next-generation spacecraft. A mass in the range of 4,535 kg is consistent with a full-size, multi-band communications payload capable of supporting a substantial number of transponders alongside the fuel reserves necessary for years of orbital stationkeeping and the robust power generation systems needed to run a commercial communications payload continuously.

Geostationary communications satellites of this class are typically launched on heavy-lift rockets capable of delivering the spacecraft directly to, or close to, geostationary transfer orbit, from which onboard propulsion systems raise the satellite to its final operational slot. They are generally designed for operational lifetimes of fifteen years or more, though the actual service life depends heavily on available onboard fuel, component reliability, and commercial demand for the orbital slot and frequency licenses the satellite holds.

AsiaSat, the operator of record in the orbital catalog, is formally known as Asia Satellite Telecommunications Company and is based in Hong Kong. The company operates a fleet of geostationary satellites covering a broad arc of the Asia-Pacific region and has been a significant participant in the regional satellite communications market for several decades. The satellite's owner country is recorded in catalog data under the designation "AC," reflecting its Hong Kong-connected operational background. The subsequent association with Israeli communications operations — captured in the AMOS-7 designation — illustrates how commercial geostationary assets can migrate between operational roles and regional programs while physically remaining at their orbital positions.

Current Status and Significance

ASIASAT 8 has not decayed or reentered the atmosphere and remains in orbit as of the latest catalog update. This is entirely expected for a well-maintained geostationary satellite: objects in the geostationary belt are far too high for atmospheric drag to play any meaningful role in orbital decay on human timescales, and the orbit is essentially permanent unless active deorbit maneuvers are performed. At end of life, geostationary satellites are typically raised into a "graveyard" orbit a few hundred kilometers above the operational geostationary belt, where they can drift without posing a collision risk to active spacecraft. Whether ASIASAT 8 has reached or is approaching that phase of its lifecycle is not confirmed in the current catalog record.

The dual-identity history of this satellite — operating as AsiaSat 8 under a Hong Kong-based operator and subsequently as AMOS-7 in an Israeli communications context — reflects broader trends in the commercial satellite industry, where orbital assets represent enormous capital investments and operators seek to extract maximum value through leasing arrangements, operational transfers, and repurposing of capacity for new markets. A single physical spacecraft can, over the course of a multi-decade operational life, serve customers across multiple continents and under multiple commercial identities, all while maintaining the same fixed position in the sky from the perspective of its ground stations and user terminals.

From a tracking perspective, ASIASAT 8 is a useful reference object in the catalog. Its near-zero orbital eccentricity and precisely equatorial inclination are hallmarks of a properly maintained commercial geostationary satellite, and the consistency of its orbital elements over time serves as a baseline against which anomalies — unexpected maneuvers, attitude disturbances, or stationkeeping failures — can be identified. The satellite's continued presence at 40107 in the NORAD catalog ensures that it will remain tracked and documented for as long as it occupies its current orbital regime.

How to Spot It

ASIASAT 8 is not readily visible to the naked eye under typical conditions. At an altitude of approximately 35,800 km, geostationary satellites are far more distant than the objects — such as the International Space Station or low-Earth orbit satellites — that casual observers most commonly see as moving points of light crossing the night sky. Geostationary satellites do not appear to move against the star field, which makes them particularly difficult to pick out visually. However, with a sufficiently powerful backyard telescope or a camera capable of long tracked exposures, geostationary satellites can sometimes be detected as faint, stationary points of light against the drifting background stars. The satellite's precise equatorial orbit means it will appear along or very close to the celestial equator as seen from any point on Earth's surface.