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Messier 91 (také M91 nebo NGC 4548) je spirální galaxie s příčkou v souhvězdí Vlasů Bereniky. Objevil ji Charles Messier 18. března 1781 a nezávisle na něm William Herschel 8. dubna 1784. Od Země je vzdálená přibližně 56 milionů ly a je členem Kupy galaxií v Panně. Se svojí magnitudou 10,2 je nejméně jasným objektem Messierova katalogu.
The analysis highlights Historie pozorování, Pozorování and Vlastnosti as prominent areas in the source structure around Messier 91.
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
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The extracted context around Messier 91 shows recurring relationship patterns in the source. For example, Messier 91 → 18. března 1781 Another extracted example is Messier 91 → 14°29′47″. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
messier online m91 dostupné 91 bereniky 18 března galaxie galaxií anglicky cit 2018-07-11 1781 souhvězdí isbn ngc ly katalogu oblohy
TTTA extracted 20 structured relationships around Messier 91. Examples in this analysis include Messier 91 → Datum objevu → 18. března 1781 and Messier 91 → Deklinace → 14°29′47″. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Messier 91 | Datum objevu | 18. března 1781 | 1.00 | infobox |
| Messier 91 | Deklinace | 14°29′47″ | 1.00 | infobox |
| Messier 91 | IRAS | IRAS 12328+1446 a IRAS F12329+1446 | 1.00 | infobox |
| Messier 91 | Jiná označení | M 91, NGC 4548, UGC 7753, PGC 41934 | 1.00 | infobox |
| Messier 91 | Kupa galaxií | Kupa galaxií v Panně | 1.00 | infobox |
| Messier 91 | Messierův katalog | M 91 | 1.00 | infobox |
| Messier 91 | New General Catalogue | NGC 4548 | 1.00 | infobox |
| Messier 91 | Objevitel | Charles Messier | 1.00 | infobox |
| Messier 91 | Plošná jasnost | 13,3 | 1.00 | infobox |
| Messier 91 | Poziční úhel | 150° | 1.00 | infobox |
| Messier 91 | Principal Galaxies Catalogue | PGC 41934 | 1.00 | infobox |
| Messier 91 | Rektascenze | 12h 35m 26,4s | 1.00 | infobox |
| Messier 91 | Rudý posuv | 0,001 62 | 1.00 | infobox |
| Messier 91 | Souhvězdí | Vlasy Bereniky (lat. Com) | 1.00 | infobox |
| Messier 91 | Typ | spirální galaxie, HI (21cm) source, zdroj infračerveného záření a LINER | 1.00 | infobox |
| Messier 91 | Třída | SBb | 1.00 | infobox |
| Messier 91 | Uppsala General Catalogue | UGC 7753 | 1.00 | infobox |
| Messier 91 | Vzdálenost | 55 900 000 ly | 1.00 | infobox |
| Messier 91 | Zdánlivá magnituda (V) | 13,57, 14,63, 8,01, 7,373, 7,115, 14,301, 12,232, 11,374, 10,914 a 10,514 | 1.00 | infobox |
| Messier 91 | Úhlová velikost | 5,4′×4,3′ | 1.00 | infobox |
The concept neighborhoods around Messier 91 bring nearby vocabulary together. In this analysis, examples include Března, Charles and Objevil. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Messier 91, one of the stronger structural bridges in this analysis connects Messier 91 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Messier 91 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Historie pozorování, Pozorování & Vlastnosti, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Messier 91 · CS edition · Analysis: TopicsToTalkAbout