Hipparcos

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Hipparcos topic overview

The analysis highlights Regions, Measurement and Science as prominent areas in the source structure around Hipparcos.

Related topics: 168
Source areas: 14
Connected nodes: 182
Extracted relationships: 170
Related term clusters: 50
Bridge connections: 182

What this topic covers Research coverage

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.

Scientific results · 42 topics

Development, launch and operations · 34 topics

Satellite and payload · 16 topics

Overview · 15 topics

Reference frame · 14 topics

Background · 12 topics

Photometric observations · 9 topics

Principles · 8 topics

People · 7 topics

Data reductions · 4 topics

Published catalogues · 3 topics

Radial velocities · 2 topics

Double and multiple stars · 1 topics

Hipparcos Input Catalogue · 1 topics

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.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Apogee altitude: 35,797.5 km (22,243.5 mi)
Band: S-Band
Bandwidth: 2-23 kbit/s
Contractor: Arianespace
COSPAR ID: 1989-062B
Deactivated: August 1993

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Hipparcos

11Satellite · European Space Agency · Astrometry

8TV-Sat 2 · Ariane 4 · Launch vehicle

6Schmidt telescope · Vignetting · Image dissector

18Acronym · Hipparchus · Trigonometry

5S band · Kbit/s · Newton (units)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Background

Satellite and payload

Principles

Hipparcos Input Catalogue

Stellar classification

Data reductions

Reference frame

Double and multiple stars

Multiple star

Photometric observations

Radial velocities

Published catalogues

People

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How Hipparcos connects Entity context

The extracted context around Hipparcos shows recurring relationship patterns in the source. For example, Hipparcos → Alenia Spazio, Andrew Murray, Bouffard, Catherine Turon, Catherine TuronFranco Emiliani, Dietmar Heger, Erik Høg, ESA, ESA/ESOC, FAST ConsortiumAdriaan Blaauw, Floor, Francesco Donati, Francois Mignard, Hamid Hassan, Hans, Hans Schrijver, Input Catalogue ConsortiumErik Høg, Jean Kovalevsky, Leeuwen, Lennart Lindegren Another extracted example is Hipparcos → Although, Bonn, CCD, Earth, Hubble Space Telescope, J1991, Kiev, Lick, MERLIN, Potsdam, Very Large Array, Very-long-baseline, VLA, VLBI, Yale/San Juan. Use these groups to spot repeated connection types before inspecting the individual relationships.

Top relations

related to People · 40

Hipparcos → Alenia Spazio, Andrew Murray, Bouffard, Catherine Turon, Catherine TuronFranco Emiliani, Dietmar Heger, Erik Høg, ESA, ESA/ESOC, FAST ConsortiumAdriaan Blaauw, Floor, Francesco Donati, Francois Mignard, Hamid Hassan, Hans, Hans Schrijver, Input Catalogue ConsortiumErik Høg, Jean Kovalevsky, Leeuwen, Lennart Lindegren

related to Reference frame · 15

Hipparcos → Although, Bonn, CCD, Earth, Hubble Space Telescope, J1991, Kiev, Lick, MERLIN, Potsdam, Very Large Array, Very-long-baseline, VLA, VLBI, Yale/San Juan

related to Scientific results · 13

Hipparcos → Astrographic Catalogue, Combined, Earth-orientation, Galactic, Galaxy's, Implicit, Naval Observatory, Reduction, Schmidt, Sloan Digital Sky Survey, The Hipparcos, Tycho-2 Catalogue, UCAC2 Catalogue

related to Photometric observations · 9

Hipparcos → Catalogue, Cepheid, Delta Scuti, Hp, Johnson UBV, RR Lyrae, Tycho, Tycho-2, Variable

related to Published catalogues · 9

Hipparcos → FAST, Hipparcos Catalogue, Hp, Median, NDAC, Photometric, TDAC, The Tycho Catalogue, Tycho Data Analysis Consortium

related to Radial velocities · 9

Hipparcos → Centre, Classical, Doppler, Hipparcos Catalogue, Radial, Similarly, Specifically, Strasbourg, Whilst

related to Satellite and payload · 9

Hipparcos → Behind, Hipparcos Catalogue, Hz, Johnson, Originally, Schmidt, Tycho Catalogue, Tycho-2 Catalogue, UBV

related to Hipparcos Input Catalogue · 8

Hipparcos → Although, HIC, Hipparcos Catalogue, Hipparcos Input Catalogue, INCA Consortium, Input Catalogue, Stars, The Input Catalogue

related to Development, launch and operations · 7

Hipparcos → Alenia Spazio, EADS Astrium, ESA, European Space Agency, Matra Marconi Space, Thales Alenia Space, The Hipparcos

related to background · 6

Hipparcos → Compiling, Earth, Earth's, Even, Hubble, Problems

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

stars catalogue data satellite space star astrometric reference observations published system two motions sky parallax scientific esa proper tycho mission

Hipparcos relationships Subject–Predicate–Object triples

TTTA extracted 170 structured relationships around Hipparcos. Examples in this analysis include Hipparcos → Apogee altitude → 35,797.5 km (22,243.5 mi) and Hipparcos → Band → S-Band. The table shows each extracted connection, where it came from and its confidence.

Subject	Predicate	Object	Confidence	Src
Hipparcos	Apogee altitude	35,797.5 km (22,243.5 mi)	1.00	infobox
Hipparcos	Band	S-Band	1.00	infobox
Hipparcos	Bandwidth	2-23 kbit/s	1.00	infobox
Hipparcos	Contractor	Arianespace	1.00	infobox
Hipparcos	COSPAR ID	1989-062B	1.00	infobox
Hipparcos	Deactivated	August 1993	1.00	infobox
Hipparcos	Diameter	29 cm (11 in)	1.00	infobox
Hipparcos	Disposal	decommissioned	1.00	infobox
Hipparcos	Dry mass	635 kg (1,400 lb)	1.00	infobox
Hipparcos	Entered service	August 1989	1.00	infobox
Hipparcos	Focal length	1.4 m (4 ft 7 in)	1.00	infobox
Hipparcos	Inclination	6.84°	1.00	infobox
Hipparcos	Launch date	8 August 1989, 23:25:53 UTC	1.00	infobox
Hipparcos	Launch mass	1,140 kg (2,510 lb)	1.00	infobox
Hipparcos	Launch site	Centre Spatial Guyanais, Kourou, ELA-2	1.00	infobox
Hipparcos	Manufacturer	Alenia Spazio Matra Marconi Space	1.00	infobox
Hipparcos	Mission duration	2.5 years (planned) 4 years (achieved)	1.00	infobox
Hipparcos	Mission type	Astrometric observatory	1.00	infobox
Hipparcos	Names	HIPPARCOS	1.00	infobox
Hipparcos	Operator	ESA	1.00	infobox
Hipparcos	Payload mass	210 kg (460 lb)	1.00	infobox
Hipparcos	Perigee altitude	500.3 km (310.9 mi)	1.00	infobox
Hipparcos	Period	636.9 minutes	1.00	infobox
Hipparcos	Power	295 watts	1.00	infobox
Hipparcos	Reference system	Geocentric orbit	1.00	infobox
Hipparcos	Regime	Geostationary transfer orbit Geostationary orbit (planned)	1.00	infobox
Hipparcos	Revolution no.	17830	1.00	infobox
Hipparcos	Rocket	Ariane 44LP H10 (V33)	1.00	infobox
Hipparcos	SATCAT no.	20169	1.00	infobox
Hipparcos	Spacecraft	HIPPARCOS	1.00	infobox

Related concept clusters Related term clusters

The concept neighborhoods around Hipparcos bring nearby vocabulary together. In this analysis, examples include Catalogue, Satellite and Stars. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

Hipparcos
- Catalogue
- Satellite
- Stars
- Star
- Published
- Reference
- Space
- Esa
- Scientific
- Tycho
- Astrometric
- Data
hipparcos
- Catalogue
- Satellite
- Stars
- Star
- Published
- Reference
- Space
- Esa
- Scientific
- Tycho
- Astrometric
- Data
satellite
- Observations
- Space
- Data
- Catalogue
- Stars
- Multiple
- Parallax
- Mission
- Scientific
- Astrometric
- Published
- System
absolute positions
- Proper
- Precision
- Resulting
- Measurements
- Motion
- Stars
- Sky
- Motions
- Observations
- Star
- Satellite
- Distance
proper motions
- Motions
- Proper
- Motion
- Stars
- Stellar
- Resulting
- Velocity
- Radial
- Space
- Reference
- Parallax
- Star
radial velocity
- Motion
- Radial
- Velocity
- Proper
- Distance
- Resulting
- Space
- Multiple
- Parallax
- Stellar
- Astrometric
- Motions
tycho-2 catalogue
- Hipparcos
- Stars
- Published
- Tycho
- Frame
- Data
- Reference
- Astrometric
- Satellite
- Observations
- Multiple
- Resulting
astrometric
- Photometric
- Magnitude
- Multiple
- Observations
- Mission
- Data
- Sky
- Catalogue
- Reference
- Hipparcos
- Measurements
- Period

Connections between topic areas Semantic bridges

For Hipparcos, one of the stronger structural bridges in this analysis connects Hipparcos with Scientific results. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3

Hipparcos — Scientific results · splits 140 ⟂ 43

Hipparcos — Development, launch and operations · splits 148 ⟂ 35

Hipparcos — Satellite and payload · splits 166 ⟂ 17

Hipparcos — Overview · splits 167 ⟂ 16

Hipparcos — Reference frame · splits 168 ⟂ 15

Hipparcos — Background · splits 170 ⟂ 13

Hipparcos — Photometric observations · splits 173 ⟂ 10

Hipparcos — Principles · splits 174 ⟂ 9

Hipparcos — People · splits 175 ⟂ 8

Hipparcos — Data reductions · splits 178 ⟂ 5

Hipparcos — Published catalogues · splits 179 ⟂ 4

Hipparcos — Radial velocities · splits 180 ⟂ 3

Map overview Semantic statistics

Hipparcos

Nodes183

Edges182

Triples170

Avg. degree1.99

Density0.010929

Components1

Source & methodology

TTTA analyzes the structure around Hipparcos to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Regions, Measurement & Science, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Hipparcos · EN edition · Analysis: TopicsToTalkAbout

Hipparcos: Regions, Measurement & Science

Hipparcos topic overview

What this topic covers Research coverage

Key facts & relationships

Start with your topic. Discover where to go next.

Questions to explore

Explore all related topics Closing gaps

Overview

Background

Satellite and payload

Principles

Development, launch and operations

Hipparcos Input Catalogue

Data reductions

Reference frame

Double and multiple stars

Photometric observations

Radial velocities

Published catalogues

Scientific results

People

For the semantics nerds

Advanced semantic analysis

How Hipparcos connects Entity context

Hipparcos

Top relations

Important terminology

Important terminology

Hipparcos relationships Subject–Predicate–Object triples

Related concept clusters Related term clusters

Connections between topic areas Semantic bridges

Map overview Semantic statistics

Hipparcos

Source & methodology