Class information for:
Level 1: SPACE DEBRIS//ORBITAL DEBRIS//ORBITAL DEBRIS PROGRAM OFF

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
17518 595 16.7 27%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
170 3       ICARUS//JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS//METEORITICS & PLANETARY SCIENCE 58974
477 2             ASTEROIDS//JOURNAL OF GUIDANCE CONTROL AND DYNAMICS//ENGINEERING, AEROSPACE 15800
17518 1                   SPACE DEBRIS//ORBITAL DEBRIS//ORBITAL DEBRIS PROGRAM OFF 595

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 SPACE DEBRIS authKW 1266488 16% 26% 94
2 ORBITAL DEBRIS authKW 570170 5% 37% 30
3 ORBITAL DEBRIS PROGRAM OFF address 412984 2% 62% 13
4 ACTIVE DEBRIS REMOVAL authKW 361714 3% 41% 17
5 SPACE DEBRIS OFF address 319750 2% 69% 9
6 ORBITAL REENTRY DEBRIS STUDIES address 298577 1% 73% 8
7 CONJUNCTION ASSESSMENT authKW 213826 1% 83% 5
8 SPACE SECURITY authKW 184743 1% 60% 6
9 GRP ORBITAL DYNAM PLANETOL address 164218 1% 80% 4
10 MOID authKW 164218 1% 80% 4

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Engineering, Aerospace 82241 56% 0% 335
2 Meteorology & Atmospheric Sciences 5406 27% 0% 161
3 Astronomy & Astrophysics 5235 39% 0% 233
4 Geosciences, Multidisciplinary 3573 29% 0% 172
5 International Relations 1073 6% 0% 35
6 Social Sciences, Interdisciplinary 405 5% 0% 27
7 Instruments & Instrumentation 238 7% 0% 42
8 Mathematics, Interdisciplinary Applications 109 4% 0% 21
9 Law 39 2% 0% 11
10 Engineering, General 10 2% 0% 9

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ORBITAL DEBRIS PROGRAM OFF 412984 2% 62% 13
2 SPACE DEBRIS OFF 319750 2% 69% 9
3 ORBITAL REENTRY DEBRIS STUDIES 298577 1% 73% 8
4 GRP ORBITAL DYNAM PLANETOL 164218 1% 80% 4
5 ASTRONAUT GRP 127393 2% 21% 12
6 SPACE FLIGHT DYNAM 126312 1% 31% 8
7 DEANSHIP PREPARATORY YEAR GIRLS BRANCH 102637 0% 100% 2
8 ESA SPACE DEBRIS OFF 102637 0% 100% 2
9 SILK RD INT LAW 102637 0% 100% 2
10 NAV MISSION DESIGN BRANCH 92371 1% 60% 3

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ADVANCES IN SPACE RESEARCH 123247 26% 2% 152
2 ACTA ASTRONAUTICA 95146 17% 2% 103
3 SPACE POLICY 71208 5% 5% 27
4 JOURNAL OF SPACECRAFT AND ROCKETS 43588 10% 1% 60
5 JOURNAL OF THE ASTRONAUTICAL SCIENCES 35589 4% 3% 25
6 JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 14266 7% 1% 40
7 JOURNAL OF EAST ASIA AND INTERNATIONAL LAW 8545 1% 4% 4
8 CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY 8156 3% 1% 17
9 EARTH-ORIENTED APPLICATIONS OF SPACE TECHNOLOGY 6217 0% 6% 2
10 CHINESE JOURNAL OF INTERNATIONAL LAW 4822 1% 2% 4

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 SPACE DEBRIS 1266488 16% 26% 94 Search SPACE+DEBRIS Search SPACE+DEBRIS
2 ORBITAL DEBRIS 570170 5% 37% 30 Search ORBITAL+DEBRIS Search ORBITAL+DEBRIS
3 ACTIVE DEBRIS REMOVAL 361714 3% 41% 17 Search ACTIVE+DEBRIS+REMOVAL Search ACTIVE+DEBRIS+REMOVAL
4 CONJUNCTION ASSESSMENT 213826 1% 83% 5 Search CONJUNCTION+ASSESSMENT Search CONJUNCTION+ASSESSMENT
5 SPACE SECURITY 184743 1% 60% 6 Search SPACE+SECURITY Search SPACE+SECURITY
6 MOID 164218 1% 80% 4 Search MOID Search MOID
7 SPACECRAFT BREAKUP 153956 1% 100% 3 Search SPACECRAFT+BREAKUP Search SPACECRAFT+BREAKUP
8 TRANSPARENCY AND CONFIDENCE BUILDING MEASURES 153956 1% 100% 3 Search TRANSPARENCY+AND+CONFIDENCE+BUILDING+MEASURES Search TRANSPARENCY+AND+CONFIDENCE+BUILDING+MEASURES
9 DEBRIS MITIGATION 139692 1% 39% 7 Search DEBRIS+MITIGATION Search DEBRIS+MITIGATION
10 REENTRY PREDICTIONS 115466 1% 75% 3 Search REENTRY+PREDICTIONS Search REENTRY+PREDICTIONS

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 WHITE, AE , LEWIS, HG , (2014) THE MANY FUTURES OF ACTIVE DEBRIS REMOVAL.ACTA ASTRONAUTICA. VOL. 95. ISSUE . P. 189-197 15 100% 10
2 ZHANG, BB , WANG, ZK , ZHANG, YL , (2016) AN ANALYTIC METHOD OF SPACE DEBRIS CLOUD EVOLUTION AND ITS COLLISION EVALUATION FOR CONSTELLATION SATELLITES.ADVANCES IN SPACE RESEARCH. VOL. 58. ISSUE 6. P. 903 -913 15 100% 0
3 DOLADO-PEREZ, JC , PARDINI, C , ANSELMO, L , (2015) REVIEW OF UNCERTAINTY SOURCES AFFECTING THE LONG-TERM PREDICTIONS OF SPACE DEBRIS EVOLUTIONARY MODELS.ACTA ASTRONAUTICA. VOL. 113. ISSUE . P. 51 -65 12 86% 4
4 PARDINI, C , ANSELMO, L , (2016) CHARACTERIZATION OF ABANDONED ROCKET BODY FAMILIES FOR ACTIVE REMOVAL.ACTA ASTRONAUTICA. VOL. 126. ISSUE . P. 243 -257 10 100% 0
5 CHEN, SY , (2011) THE SPACE DEBRIS PROBLEM.ASIAN PERSPECTIVE. VOL. 35. ISSUE 4. P. 537-558 11 100% 0
6 LETIZIA, F , COLOMBO, C , LEWIS, HG , (2015) ANALYTICAL MODEL FOR THE PROPAGATION OF SMALL-DEBRIS-OBJECT CLOUDS AFTER FRAGMENTATIONS.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS. VOL. 38. ISSUE 8. P. 1478 -1491 12 80% 2
7 DEMARS, KJ , CHENG, Y , JAH, MK , (2014) COLLISION PROBABILITY WITH GAUSSIAN MIXTURE ORBIT UNCERTAINTY.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS. VOL. 37. ISSUE 3. P. 979 -984 12 71% 14
8 LETIZIA, F , COLOMBO, C , LEWIS, HG , (2016) COLLISION PROBABILITY DUE TO SPACE DEBRIS CLOUDS THROUGH A CONTINUUM APPROACH.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS. VOL. 39. ISSUE 10. P. 2240 -2249 10 91% 0
9 LIDTKE, AA , LEWIS, HG , ARMELLIN, R , (2015) IMPACT OF HIGH-RISK CONJUNCTIONS ON ACTIVE DEBRIS REMOVAL TARGET SELECTION.ADVANCES IN SPACE RESEARCH. VOL. 56. ISSUE 8. P. 1752 -1764 12 75% 0
10 WHITE, AE , LEWIS, HG , (2014) AN ADAPTIVE STRATEGY FOR ACTIVE DEBRIS REMOVAL.ADVANCES IN SPACE RESEARCH. VOL. 53. ISSUE 8. P. 1195-1206 9 100% 2

Classes with closest relation at Level 1


Rank Class id link
1 14222 FROZEN ORBITS//CRITICAL INCLINATION//HIGH AREA TO MASS RATIO
2 16119 ASTEROID DEFLECTION//ORBIT DETERMINATION//PLANETARY DEFENSE
3 21565 LASER PROPULSION//IMPULSE COUPLING COEFFICIENT//MOMENTUM COUPLING COEFFICIENT
4 13672 TETHERED SATELLITE SYSTEM//TETHERED SATELLITE//ELECTRODYNAMIC TETHER
5 8453 FORMATION FLYING//JOURNAL OF GUIDANCE CONTROL AND DYNAMICS//SPACECRAFT FORMATION FLYING
6 17362 HYPERVELOCITY IMPACT//INTERNATIONAL JOURNAL OF IMPACT ENGINEERING//WHIPPLE SHIELD
7 27878 ORBITAL REPLACEMENT UNIT//MULTI STATE FAILURE//HEALTH SCORECARD
8 12647 INTERPLANETARY DUST//ZODIACAL LIGHT//ACOUSTIC RADIATION DETECTOR
9 13076 THERMOSPHERE//SATELLITE DRAG//THERMOSPHERIC DYNAMICS
10 28574 BODY OF MINIMAL RESISTANCE//NEWTONS PROBLEM//MODIFIED RAYLEIGH CONJECTURE

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