Hipparcos · ESA 1997
Positions, parallaxes, magnitudes, colors, spectral types and references for the 5,044 stars.
Universum uses the catalogues, databases, photographs, software and scientific references listed below. Thank you to the teams and authors who make them available for consultation and reuse.
Each resource retains its own terms of reuse. The portal’s selections, conversions, calculations and illustrations are adaptations identified on the relevant pages. The licenses for data, photographs and software apply to their respective elements.
Positions, parallaxes, magnitudes, colors, spectral types and references for the 5,044 stars.
Estimated temperatures, luminosities, radii and ages, matched to HIP identifiers.
Stellar names and designations, constellation figures and boundaries.
Selection of reference stars for the constellation entries.
89 official charts for the 88 constellations, converted to WebP.
7,840 NGC numbers, 8,373 entries; adapted coordinates and Messier cross-identifications.
Descriptions and advice from volume II, supplemented by HEASARC and OpenNGC references.
Photographs of deep-sky objects; resizing and WebP conversion.
Characteristics of the worlds, diameters, distances and references for the entries.
Factual references; original project diagrams
Photographs of both sides, the background of the annotated map and lunar views.
LROC/LOLA Moon texture for illumination and the terminator.
Names, dimensions and coordinates of 100 selected lunar features.
USGS data: public domain in the United States; credit requested
Dates, landing sites and historical milestones, summarized for the portal.
Factual references; terms specific to the original content
Outlines, borders and reference points on the terrestrial globe, generalized for display.
SP.POP.TOTL population figures, with the year and source retained for each value.
Selection of cities, countries, coordinates, approximate elevations and time zone identifiers.
Color matching functions adapted for the star color laboratory.
Ephemerides, celestial rotations, planetarium, Moon, planning and Solar System views.
Projections and geometry for the terrestrial globe.
Projection of HIP stars with usable distances; adopted Sun–center distance of 8,178 pc. The arms are schematic.
Scientific references; original project drawing
Ephemerides over ten years and a preview of the next six months; approximate meteor shower periods.
Calculation code under MIT; cited factual dates and references
Creation guide, four formats, printable sheets and a downloadable web kit.
Web kit: MIT; book, covers and illustrations: separate rights
The explanations and calculators are based on the references cited in each tool. Stellar ages are model estimates, diameters are calculated from available parameters, and schematic views are identified.
This portal was designed and developed with artificial intelligence assistance under the direction of Steve Cimolino. This assistance contributed to writing, programming and the production or adaptation of some diagrams and visuals.
The astronomical and geographical data come from the cited catalogues and organizations. The portal’s simulation and calculation results are presented with their methods and limitations. Artistic illustrations created for the project are captioned; they do not represent scientific observations.
Logo, covers, books and the project’s own texts: Steve Cimolino / Éditions Les Vieux Livres. To reuse an element of the project, contact the author. The rights and licenses of third-party resources remain with their authors.
The content is provided for informational and educational purposes. Despite the care taken in its preparation, it may contain errors, omissions or information that has become inaccurate. Its accuracy, completeness and freedom from errors are not guaranteed.
Estimates and simulations depend on the available data and the models used. To the extent permitted by law, the publisher disclaims all liability for the consequences of using the published information, estimates and simulations. This notice does not limit liabilities that cannot legally be excluded.
If you notice an error, an incomplete credit or a license issue, please contact Steve Cimolino through the Contact page, specifying the page and resource concerned. This will allow the report to be reviewed and any necessary corrections or adaptations to be made.
Original links retained in the portal’s pages and datasets. Detailed credits for photographs, lunar features and objects remain available in their entries.
Main terms recorded and checked: October 19, 2026.
Generated locally with qrcode-generator 2.0.4. Copyright © 2009 Kazuhiko Arase. MIT licence; notice retained.
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Optical diameters, nominal focal lengths, types and model names come from Celestron, Sky-Watcher, Bresser and Omegon specifications. Each model links to its manufacturer specification page.
Specifications are factual data; trademarks belong to their owners. Manufacturer photographs and marketing descriptions are not reproduced.
Catalogue and manufacturer specifications · Detailed references for all 50 models