INTELSAT 28 (IS-28)

Intelsat 28 (IS-28), cataloged by the United States Space Command under NORAD ID 37392 and tracked internationally under the COSPAR designator 2011-016A, is a commercial communications satellite currently in geosynchronous orbit. Launched on April 21, 2011, the spacecraft was initially known as New Dawn before being rebranded under the Intelsat designation it carries today. It occupies the geostationary arc at 33 degrees east longitude, where it provides television broadcasting and broadband connectivity services to customers across the African continent. As of the time of writing, the satellite remains operational in orbit and has not undergone atmospheric reentry.

Mission and Purpose

The satellite's primary role is to serve the communications infrastructure of Africa, a region that has seen substantial growth in demand for both direct-to-home television services and high-speed data connectivity. Positioned at 33 degrees east, IS-28 sits over a portion of the geostationary arc that offers strong line-of-sight coverage across sub-Saharan Africa, East Africa, and portions of Central and North Africa. From this vantage point, a single satellite can illuminate a vast footprint, making it a cost-effective solution for reaching populations spread across diverse terrain and remote areas where terrestrial infrastructure may be limited or absent.

The satellite originally entered service under the name New Dawn, a designation that reflected, at least nominally, aspirations tied to expanding African connectivity. Upon its integration into Intelsat's fleet, it was renumbered and rebranded as Intelsat 28, consistent with the operator's standardized naming conventions. Intelsat, one of the longest-established fixed satellite service operators in the world, has historically maintained an extensive fleet of geostationary satellites serving broadcasters, internet service providers, governments, and enterprise clients around the globe.

While the specific payload configuration of IS-28 — including the number and type of transponders, the frequency bands employed, and the precise transmission power — is not recorded in the publicly available satellite catalog data, the satellite's function as a communications platform supporting both broadcast and broadband applications is well established. Such satellites typically carry a combination of C-band and Ku-band transponders, enabling a range of services from wide-area broadcast distribution to more targeted broadband data links, though these specifics cannot be confirmed for IS-28 from verified catalog sources.

Orbit and Tracking

Intelsat 28 occupies a near-geostationary orbit with an apogee of 35,811 kilometers and a perigee of 35,779 kilometers, giving it a very slight eccentricity. This near-circular orbital profile is characteristic of operational geostationary satellites that have been placed with precision into the belt approximately 35,786 kilometers above the equator, where the orbital period matches the Earth's rotational period. IS-28's measured orbital period is 1,436.1 minutes — virtually identical to one sidereal day — meaning the satellite completes one orbit in the same time the Earth rotates once on its axis.

The satellite's inclination is currently recorded at 1.8 degrees relative to the equatorial plane. A perfectly station-kept geostationary satellite would maintain an inclination as close to zero as possible, allowing it to appear stationary from the ground. An inclination of 1.8 degrees is modest but not insignificant; it indicates the satellite traces a small figure-eight pattern, known as an analemma, as seen from a fixed ground observation point. This drift in inclination typically accumulates over the lifetime of a satellite as north-south stationkeeping maneuvers are reduced or suspended — often a deliberate choice operators make to conserve fuel in the later stages of a satellite's operational life, extending its usable lifespan by foregoing the propellant expenditure required to correct inclination.

The combination of its orbital altitude, period, and inclination places IS-28 firmly within the population of geosynchronous objects tracked by space surveillance networks. Its NORAD catalog entry (37392) allows ground stations, researchers, and tracking services to monitor its position continuously using two-line element sets derived from radar and optical observations. For ground observers, the satellite appears roughly fixed in the sky above the 33-degree east meridian, though the slight inclination causes it to drift northward and southward by a small angular amount over the course of each day.

Design and Operator

The manufacturer of Intelsat 28 is not documented in the available catalog data, and its mass at launch similarly remains unrecorded in publicly accessible sources. What is known is that the satellite was built for and now operates under the auspices of Intelsat, a Luxembourg-headquartered satellite services company with a history stretching back to the 1960s. Intelsat's fleet spans numerous geostationary orbital slots and is among the largest commercial satellite constellations in the world by total capacity.

IS-28's association with the African market fits into a broader strategic pattern for Intelsat, which has long positioned assets at orbital slots offering favorable coverage of emerging and high-growth regions. The 33-degree east position is a well-utilized slot in the geostationary arc for African coverage, benefiting from favorable geometry relative to the continent's latitudinal distribution. Satellites at this location provide relatively high elevation angles when viewed from equatorial and southern African ground stations, reducing atmospheric interference and improving signal quality compared to lower-elevation satellite links.

The satellite is classified as a payload object — as opposed to a rocket body or debris — in the space surveillance catalog, confirming its status as an intentionally placed, functioning or formerly functioning spacecraft rather than a byproduct of a launch.

Current Status and Legacy

Intelsat 28 was launched during a period of considerable optimism about Africa's digital future. The early 2010s saw a wave of satellite capacity directed at the continent as mobile penetration increased rapidly, demand for broadcast content grew, and international connectivity became increasingly important for businesses, governments, and educational institutions. The satellite was positioned to be part of that expansion, offering capacity to service providers and broadcasters seeking to reach audiences across a vast geographic area with a single orbital asset.

As of the available tracking data, IS-28 remains in orbit with no reentry date recorded. Its current inclination of 1.8 degrees, while small, may reflect reduced or modified stationkeeping activity depending on the satellite's operational state. Geostationary satellites that are no longer actively maintained tend to drift in inclination at a rate of roughly 0.75 degrees per year due to the gravitational influence of the Moon and Sun, and an inclination in the range observed for IS-28 is consistent with a satellite that may be in a reduced-maintenance phase, though this remains a general observation rather than a confirmed operational assessment.

At end of life, international guidelines recommend that geostationary satellites be moved to a "graveyard orbit" several hundred kilometers above the geostationary belt — a disposal orbit that removes spent hardware from the operationally crowded geostationary arc. Whether or not IS-28 has been or will be maneuvered to such an orbit following the conclusion of its operational mission cannot be determined from catalog data alone.

The satellite's legacy, if modest in global terms, is meaningful in the context of African telecommunications development. By extending reliable broadcast and broadband coverage to communities with limited terrestrial infrastructure, assets like IS-28 have contributed to expanding access to information, entertainment, and communications services across a continent undergoing rapid technological change. The 33-degree east slot continues to serve African coverage requirements, and IS-28's presence there represents one chapter in the ongoing story of satellite-enabled connectivity for the region.

How to Observe Intelsat 28

Because IS-28 is a geostationary satellite, it does not pass across the sky in the way that low Earth orbit objects do. For observers within the satellite's visibility zone — roughly the African continent, the Middle East, and parts of Europe — it appears as a stationary point of light fixed near the celestial equator, close to the position corresponding to 33 degrees east longitude projected outward onto the sky. It will not rise or set in any meaningful sense, though the slight 1.8-degree inclination means it oscillates very slowly north and south of the equatorial plane over the course of a day.

Visually, geostationary satellites are faint objects. At an altitude of over 35,000 kilometers, even large spacecraft reflect relatively little sunlight to ground-based observers. IS-28 is best sought with binoculars or a small telescope under dark skies, and it will appear as a stationary or near-stationary point among the background stars. The satellite's fixed position makes it straightforward to locate once the correct sky coordinates are calculated for a given observer's longitude and latitude, and tracking tools on this site can provide real-time pointing information for any location.