Class information for:
Level 1: ASTEROID DEFLECTION//ORBIT DETERMINATION//PLANETARY DEFENSE

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
16119 672 18.8 37%


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
16119 1                   ASTEROID DEFLECTION//ORBIT DETERMINATION//PLANETARY DEFENSE 672

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 ASTEROID DEFLECTION authKW 690963 3% 72% 21
2 ORBIT DETERMINATION authKW 378578 7% 19% 45
3 PLANETARY DEFENSE authKW 327146 2% 60% 12
4 INITIAL ORBIT DETERMINATION authKW 306703 1% 75% 9
5 SUPEROSCULATING ORBIT authKW 272629 1% 100% 6
6 ASTEROID DEFLECT address 242332 1% 67% 8
7 OPTICAL OBSERVATIONS authKW 230356 3% 30% 17
8 NEAR EARTH OBJECTS authKW 220839 4% 17% 29
9 SPACE DEBRIS authKW 213284 6% 11% 41
10 ASTEROID EXPLOITATION authKW 181753 1% 100% 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 26551 30% 0% 203
2 Astronomy & Astrophysics 16157 64% 0% 428
3 Meteorology & Atmospheric Sciences 1067 12% 0% 79
4 Geosciences, Multidisciplinary 1000 15% 0% 101
5 Mathematics, Interdisciplinary Applications 298 5% 0% 35
6 Instruments & Instrumentation 131 5% 0% 35
7 International Relations 64 1% 0% 10
8 Social Issues 27 1% 0% 5
9 Multidisciplinary Sciences 9 1% 0% 6
10 History & Philosophy of Science 6 0% 0% 3

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 ASTEROID DEFLECT 242332 1% 67% 8
2 SPACE OBJECT DEBRIS OBSERVAT 82452 1% 26% 7
3 ASTRODYNAM SPACE TECHNOL 81786 0% 60% 3
4 IAS PLANETOL 80775 1% 44% 4
5 SURVEILLANCE TECH GRP 68154 0% 50% 3
6 GROUND SEGMENT ENGN 60583 0% 67% 2
7 AIR FORCE MAUI OPT SUPERCOMP SITE 45438 0% 100% 1
8 ASTRONOM OBSERV CHORZOW PLANETARIUM 45438 0% 100% 1
9 CHORZOW ASTRON OBSERV 45438 0% 100% 1
10 CHORZOW PLANETARIUM 45438 0% 100% 1

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 SOLAR SYSTEM RESEARCH 95001 6% 5% 42
2 ACTA ASTRONAUTICA 44614 11% 1% 75
3 CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY 27258 5% 2% 33
4 ADVANCES IN SPACE RESEARCH 25086 11% 1% 73
5 COSMIC RESEARCH 10954 2% 2% 14
6 BALTIC ASTRONOMY 10790 2% 2% 13
7 EARTH MOON AND PLANETS 8358 3% 1% 18
8 JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 7567 5% 1% 31
9 ICARUS 7387 6% 0% 39
10 PLANETARY AND SPACE SCIENCE 6102 4% 0% 28

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 ASTEROID DEFLECTION 690963 3% 72% 21 Search ASTEROID+DEFLECTION Search ASTEROID+DEFLECTION
2 ORBIT DETERMINATION 378578 7% 19% 45 Search ORBIT+DETERMINATION Search ORBIT+DETERMINATION
3 PLANETARY DEFENSE 327146 2% 60% 12 Search PLANETARY+DEFENSE Search PLANETARY+DEFENSE
4 INITIAL ORBIT DETERMINATION 306703 1% 75% 9 Search INITIAL+ORBIT+DETERMINATION Search INITIAL+ORBIT+DETERMINATION
5 SUPEROSCULATING ORBIT 272629 1% 100% 6 Search SUPEROSCULATING+ORBIT Search SUPEROSCULATING+ORBIT
6 OPTICAL OBSERVATIONS 230356 3% 30% 17 Search OPTICAL+OBSERVATIONS Search OPTICAL+OBSERVATIONS
7 NEAR EARTH OBJECTS 220839 4% 17% 29 Search NEAR+EARTH+OBJECTS Search NEAR+EARTH+OBJECTS
8 SPACE DEBRIS 213284 6% 11% 41 Search SPACE+DEBRIS Search SPACE+DEBRIS
9 ASTEROID EXPLOITATION 181753 1% 100% 4 Search ASTEROID+EXPLOITATION Search ASTEROID+EXPLOITATION
10 ASTEROIDS ASTROMETRY PHOTOMETRY ORBITS 181753 1% 100% 4 Search ASTEROIDS+ASTROMETRY+PHOTOMETRY+ORBITS Search ASTEROIDS+ASTROMETRY+PHOTOMETRY+ORBITS

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 SONG, YJ , PARK, SY , CHOI, KH , (2010) MISSION FEASIBILITY ANALYSIS ON DEFLECTING EARTH-CROSSING OBJECTS USING A POWER LIMITED LASER ABLATING SPACECRAFT.ADVANCES IN SPACE RESEARCH. VOL. 45. ISSUE 1. P. 123-143 27 77% 1
2 LUBIN, P , HUGHES, GB , ESKENAZI, M , KOSMO, K , JOHANSSON, IE , GRISWOLD, J , PRYOR, M , O'NEILL, H , MEINHOLD, P , SUEN, J , ET AL (2016) DIRECTED ENERGY MISSIONS FOR PLANETARY DEFENSE.ADVANCES IN SPACE RESEARCH. VOL. 58. ISSUE 6. P. 1093 -1116 22 76% 0
3 SONG, YJ , PARK, SY , (2015) ESTIMATION OF NECESSARY LASER POWER TO DEFLECT NEAR-EARTH ASTEROID USING CONCEPTUAL VARIABLE-LASER-POWER ABLATION.AEROSPACE SCIENCE AND TECHNOLOGY. VOL. 43. ISSUE . P. 165 -175 16 100% 0
4 MUINONEN, K , FEDORETS, G , PENTIKAINEN, H , PIENILUOMA, T , OSZKIEWICZ, D , GRANVIK, M , VIRTANEN, J , TANGA, P , MIGNARD, F , BERTHIER, J , ET AL (2016) ASTEROID ORBITS WITH GAIA USING RANDOM-WALK STATISTICAL RANGING.PLANETARY AND SPACE SCIENCE. VOL. 123. ISSUE . P. 95 -100 17 85% 0
5 HOLZINGER, MJ , WORTHY, JL , (2015) INCORPORATING UNCERTAINTY IN ADMISSIBLE REGIONS FOR UNCORRELATED DETECTIONS.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS. VOL. 38. ISSUE 9. P. 1673 -1689 14 93% 1
6 WLODARCZYK, I , (2013) THE POTENTIALLY DANGEROUS ASTEROID (99942) APOPHIS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 434. ISSUE 4. P. 3055-3060 14 88% 3
7 SUN, RY , ZHAN, JW , ZHAO, CY , ZHANG, XX , (2015) ALGORITHMS AND APPLICATIONS FOR DETECTING FAINT SPACE DEBRIS IN GEO.ACTA ASTRONAUTICA. VOL. 110. ISSUE . P. 9 -17 14 82% 1
8 FUJIMOTO, K , ALFRIEND, KT , (2015) OPTICAL SHORT-ARC ASSOCIATION HYPOTHESIS GATING VIA ANGLE-RATE INFORMATION.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS. VOL. 38. ISSUE 9. P. 1602 -1613 14 82% 1
9 MILANI, A , FARNOCCHIA, D , DIMARE, L , ROSSI, A , BERNARDI, F , (2012) INNOVATIVE OBSERVING STRATEGY AND ORBIT DETERMINATION FOR LOW EARTH ORBIT SPACE DEBRIS.PLANETARY AND SPACE SCIENCE. VOL. 62. ISSUE 1. P. 10 -22 14 88% 3
10 GAO, YT , WU, JY , (2016) ASTEROID ROTATION CONTROL VIA A TETHERED SOLAR SAIL.ADVANCES IN SPACE RESEARCH. VOL. 58. ISSUE 11. P. 2304 -2312 14 78% 0

Classes with closest relation at Level 1


Rank Class id link
1 17518 SPACE DEBRIS//ORBITAL DEBRIS//ORBITAL DEBRIS PROGRAM OFF
2 488 ASTEROIDS//ASTEROIDS SURFACES//ICARUS
3 14222 FROZEN ORBITS//CRITICAL INCLINATION//HIGH AREA TO MASS RATIO
4 22787 NON CANONICAL HAMILTONIAN STRUCTURE//FULL TWO BODY PROBLEM//GRAVITATIONAL ORBIT ATTITUDE COUPLING
5 35022 ALL RUSSIA PETR EXPLORAT VNIGRI//ISM CLOUDS GENERAL CHAMELEON//MINICOMETS
6 27274 KEPLERS EQUATION//OPTIMAL STARTER//HALF ARGUMENT TRANSFORMATION
7 16279 SOLAR SAIL//ADV SPACE CONCEPTS//ELECTRIC SOLAR WIND SAIL
8 4238 KUIPER BELT//OORT CLOUD//KUIPER BELT GENERAL
9 8806 JOURNAL OF GUIDANCE CONTROL AND DYNAMICS//LOW THRUST//TRAJECTORY OPTIMIZATION
10 30175 RADIANT PROPERTIES//QUAL INSURANCE//ATMOSPHERIC SMALL SCALE FLUCTUATIONS

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