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Encyclopedia > Numbers about the solar system XIV

 

Size and form of some asteroids 
(in kilometers)



 
Asteroid   Equatorial radius  
(major axis)		 Equatorial radius  
(minor axis)		 Polar radius   References  
1 Ceres 487 455 455 Parker (2004)
2 Pallas 285 262 241 Drummond (1989)
3 Juno 143 119 94 Dotto (1995)
4 Vesta 285 272 217 Drummond (1989)
5 Astraea 71 58 51 De Angelis (1995)
6 Hebe 101 89 89 Dotto (1995)
7 Iris 128 103 76 De Angelis (1995)
8 Flora 136 136 136 Torppa (2003)
9 Metis 117 90 73 De Angelis (1995)
10 Hygiea 407 407 407 Torppa (2003)
12 Victoria 65 52 52 Dotto (1995)
13 Egeria 142 100 79 Poznan Obs.
15 Eunomia 170 117 107 Magnusson (1998)
16 Psyche 165 127 97 Magnusson (1998)
17 Thetis 63 45 32 Michalowski (1995)
18 Melpomene 141 141 141 Torppa (2003)
19 Fortuna 125 99 99 De Angelis (1995)
20 Massalia 85 67 67 Dotto (1995)
21 Lutetia 61 50 35 Lagerkvist (1995)
22 Kalliope 116 88 73 Magnusson (1998)
29 Amphitrite 118 100 100 De Angelis (1995)
30 Urania 67 45 41 Michalowski (1996)
31 Euphrosyne 158 145 91 Kryszczynska (1996)
32 Pamona 51 36 36 Dotto (1995)
39 Laetitia 118 80 43 Magnusson (1998)
41 Daphne 107 82 75 Magnusson (1998)
43 Ariadne 45 26 26 Magnusson (1998)
44 Nysa 59 35 35 Magnusson (1998)
45 Eugenia 154 110 73 Mikko (2002)
52 Europa 180 150 128 Michalowski (1995)
55 Pandora 43 33 26 De Angelis (1995)
63 Ausonia 76 33 33 Magnusson (1998)
65 Cybele 136 130 95 De Angelis (1995)
85 Io 92 77 77 Erikson (1999)
87 Sylvia 190 132 88 Kaasalainen (2002)
88 Thisbe 116 102 85 Magnusson (1998)
90 Antiope 42 42 42 Descamps (2006)
107 Camilla 167 114 72 Magnusson (1998)
115 Thyra 48 42 32 Dotto (1995)
121 Hermione 88 88 88 Descamps (2004)
130 Elektra 138 89 61 Kaasalainen (2005)
135 Hertha 52 38 32 Magnusson (1998)
146 Lucina 150 150 150 -
165 Loreley 95 79 52 Behrend (2005)
192 Nausikaa 72 53 36 Dotto (1995)
196 Philomela 86 65 56 Kryszczynska (1996)
201 Penelope 48 32 26 Magnusson (1998)
216 Kleopatra 144 56 43 Magnusson (1998)
230 Athamantis 70 53 44 Blanco (1998)
243 Ida 27  12 8 Seidelmann (2001)
250 Bettina 50 36 36 Magnusson (1998)
283 Emma 74 74 74 Descamps (2006)
360 Carlova 84 59 39 Michalowski (2000)
379 Huenna 26 44 43 Descamps (2006)
409 Aspasia 90 79 73 Blanco (1998)
416 Vaticana 58 40 34 Michalowski (2000)
423 Diotima 117 101 96 Dotto (1995)
433 Eros 17 9 7 Seidelmann (2001)
516 Amherstia 55 40 22 Michalowski (2000)
532 Herculina 134 111 92 Michalowski (1996)
617 Patroclus 61 61 61 Hestroffer (2005)
624 Hektor 208 94 94 Mikko (2001)
704 Interamnia 177 159 141 Michalowski (1995)
762 Pulkova 128 64 38 Descamps (2006)
776 Berbericia 89 78 63 Michalowski (2000)
809 Lundia 9 5 4 Descamps (2006)
951 Gaspra  9 5 4 Seidelmann (2001)
984 Gretia 9 5 4 Blanco (2001)
1572 Posnania 21 15 15 Michalowski (2001)
1620 Geographos 2.5 1 1 Hudson (1999)
2063 Bacchus 0.6 0.3 0.3 Benner (1999)
3169 Ostro 3 3 3 Descamps (2005)
3749 Balam 8 8 8 Descamps (2007)
4179 Toutatis 7 7 7 Ostro (1999)
4769 Castalia 1 1 1 Hudson (1997)
65489 Ceto 100 100 100 Marchis (2006)
231547 2003_EL61 989 759 498 Rabinowitz (2006)

 Note 1: the data above come from determinations more elaborated than deducing the size from the brightness. Adaptive optics and/or occultations have been used. The references may be founded through Astrophysics Data System (http://adsabs.harvard.edu) by entering the name of the author and the year of publication (be connected to Internet for this search).

Note 2: the accuracy of the above measurements is quite poor. The error bars provided by the authors are internal errors (precision) and not an evaluation of the accuracy. The uncertainty is still around 20 to 30%.

Credit : IMCCE