The catalog started on a 1989 desktop<\/p>\n
McDowell began compiling what he calls Jonathan\u2019s Space Report while working as an astrophysicist at the Harvard-Smithsonian Center for Astrophysics. The original format was a weekly email newsletter sent to a handful of subscribers. The point was simple. Public satellite tracking existed \u2014 cataloging objects had been underway for decades \u2014 but the raw data was scattered, inconsistent, and rarely cross-referenced with launch records, mission descriptions, or fate-of-object information.<\/p>\n
McDowell did the cross-referencing himself. Each object got a line. Each line got a source. When a satellite re-entered, he updated the entry. When a rocket body broke up, he logged the debris field. The work was tedious. It was also the only place a researcher could find a unified, plain-language record of what humanity had launched and what had happened to it since Sputnik.<\/p>\n
That database is still running. The format has changed \u2014 the website now hosts machine-readable tables, launch logs by year, and a separate Starlink-specific page \u2014 but the curation remains a one-person job. McDowell parses orbital element sets released by the U.S. Space Force, checks them against launch manifests, and decides what counts as in orbit, decayed, or operational. Those decisions matter, because the categories are not always obvious.<\/p>\n
Why governments and reporters cite a private database<\/p>\n
Official catalogs exist. Space-Track.org, run by the U.S. Space Force, lists every tracked object above a certain size. The European Space Agency maintains its own database. Russia and China publish partial figures. But none of them, until recently, produced a clean public count of active Starlink satellites currently in service. The Space Force tracks objects. It does not distinguish a working V2 Mini from a decommissioned V1 drifting toward re-entry.<\/p>\n
McDowell does. His Starlink page separates the constellation by version, shell, altitude, and operational status. When SpaceX adjusted satellite altitudes to comply with deorbit requirements<\/a>, McDowell\u2019s tables tracked the altitude shift week by week. Reporters covering the move had a single citable source. So did the FCC.<\/p>\n The result is that a private catalog, maintained by one astronomer without institutional funding for the work, sits at the center of how the orbital environment is publicly described. When SpaceNews reports on constellation growth<\/a>, McDowell\u2019s numbers appear. When congressional staffers brief members on satellite congestion, his figures are in the slide deck. When the count of active Starlinks appeared in the Tech Times story on the June 15 launch, it carried his name.<\/p>\n The 1,500-satellite year<\/p>\n The pace that made 2026 the year Starlink became impossible to ignore is also the pace that made an independent counter necessary. By June 15, 2026, the company had placed 1,500 satellites in orbit in a single calendar year \u2014 with half the year still to run. That averages to roughly one dedicated launch every three to four days, with Falcon 9 missions carrying batches of satellites into orbit. The launch cadence has reached unprecedented levels of reusability and frequency.<\/p>\n Space Daily has covered the cadence as it accelerated, including the Falcon 9 missions<\/a> that pushed the active fleet to new milestones and the polar-orbit deployments expanding coverage at high latitudes<\/a>.<\/p>\n The mechanics are unglamorous. McDowell downloads two-line element sets \u2014 the standard format for describing an object\u2019s orbit \u2014 from public Space Force feeds. He runs them through his own scripts to identify which catalog number corresponds to which payload from which launch. He cross-checks against launch broadcasts, FCC filings, and operator statements. He flags anomalies. He emails the operator when something looks wrong. He updates the database.<\/p>\n The process is what allowed him to quickly assess the New Glenn anomaly in April 2026 and determine that AST SpaceMobile\u2019s BlueBird 7 satellite had been dropped into an unusable orbit. The Space Force tracking data showed the orbit. McDowell matched it to the payload, calculated the decay time, and posted the result. Blue Origin\u2019s statement indicated the satellite was in a problematic orbit, but did not specify whether re-entry was imminent. McDowell\u2019s reading of the tracking data did. AST confirmed the satellite would be deorbited later that day.<\/p>\n The same workflow applies to the Tesla Roadster episode. In January 2025, the Minor Planet Center cataloged what appeared to be a new near-Earth object. It turned out to be Elon Musk\u2019s Tesla Roadster<\/a>, launched on a Falcon Heavy test flight in February 2018. McDowell was among the astronomers who flagged the mismatch between the object\u2019s trajectory and any known asteroid. The catalog entry was deleted within hours. The car remained on a heliocentric orbit, where it still is.<\/p>\n Why a one-person catalog became the standard<\/p>\n Three things made McDowell\u2019s database harder to replicate than it looks. The first is continuity. A satellite catalog is only useful if it spans decades. McDowell\u2019s runs from Sputnik to last week, in a single consistent format, maintained by the same person. Institutional databases change schemas, lose funding, get reorganized. His does not.<\/p>\n The second is editorial judgment. Deciding what counts as \u201cactive\u201d requires reading operator statements, watching for maneuver patterns, and noticing when a satellite stops adjusting its orbit. Automated systems flag the object as still present. McDowell flags it as drifting. The distinction matters when the question is how much of low Earth orbit is actually being used versus how much is filling up with dead hardware.<\/p>\n The third is accessibility. The data is free. The website is plain HTML. The tables download as CSV. A graduate student in Bangalore, a regulator in Brussels, and a reporter in Washington can all pull the same numbers in under a minute. McDowell has spoken at Duke and elsewhere<\/a> about the regulatory implications of constellation growth, and his framing \u2014 that orbital space is a finite resource being allocated faster than rules can adapt \u2014 has shaped how policy researchers describe the problem.<\/p>\n The constellation he is counting<\/p>\n What McDowell is tracking is no longer a satellite program in the traditional sense. It is the infrastructure layer underneath a consumer broadband business with millions of subscribers across more than a hundred countries, a direct-to-cell service that turns standard LTE phones into satellite handsets, and \u2014 as of June 12, 2026 \u2014 a newly public company. SpaceX\u2019s public listing reached a valuation in the hundreds of billions. Starlink has generated billions in revenue with rapid year-over-year growth.<\/p>\n The technical reason the fleet has to be so large is geometry. A satellite at 550 kilometers crosses the sky in minutes. Continuous coverage requires enough satellites distributed across multiple orbital shells that as one sets, another rises. Direct-to-cell coverage, which routes phone signals through laser inter-satellite links to ground stations, requires hundreds of dedicated satellites to reach global text service. Voice and data require denser deployment still. Each Falcon 9 mission \u2014 including the recent ones Space Daily covered when SpaceX returned to flight days after a service outage \u2014 adds capacity to that layer.<\/p>\n![\"Starlink](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/06\/starlink-satellite-train-sky.jpg\")
\nHow the work actually gets done<\/p>\n
![\"Watch](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/06\/1782294145_463_maxresdefault.jpg\")
\u25ba \u25ba Watch \u00b7 Space Daily One Man Now Controls More of Space Than Any Country on Earth If you\u2019re curious to dig deeper into how one person has come to control more orbital assets than entire nations, there\u2019s a thoughtful video by Space Daily that explores this concentration of space power and what it means for the future of low Earth orbit. <\/a><\/p>\n