16 Psyche: Perbedaan antara revisi

Observasi radar astronomi menunjukkan bahwa Psyche terdiri dari komposisi antara [[nikel]]-[[besi]] yang cukup murni.<ref name="Ostro85">{{cite journal | author= S.J. Ostro| title= Radar observations of asteroids and comets| journal= Astronomical Society of the Pacific, Publications | year= 1985| volume= 97| page= 877| bibcode= 1985PASP...97..877O| doi= 10.1086/131619}}</ref><ref name="Magri99">{{cite journal | author= C. Magri et al.| title= Mainbelt Asteroids: Results of Arecibo and Goldstone Radar Observations of 37 Objects during 1980–1995| journal= Icarus| year= 1999| volume= 140 | issue= 2| page= 379 | doi = 10.1006/icar.1999.6130 | bibcode=1999Icar..140..379M}}</ref> Tidak seperti asteroid tipe M lainnya, Psyche tidak menunjukkan tanda adanya air atau mineral pembawa air pada permukaannya, yang terlihat hanyalah objek metalik secara konsisten.<ref name="Merenyi97">{{cite journal | author= E. Merényi et al.| title= Prediction of Water in Asteroids from Spectral Data Shortward of 3 µm| journal= Icarus| year= 1997| volume= 129 | issue= 2| page= 421 | doi = 10.1006/icar.1997.5796 | bibcode=1997Icar..129..421M}}</ref> Sejumlah kecil piroksin nampaknyatampaknya ada di asteroid ini.<ref name="Hardersen05">{{cite journal| author = P.S. Hardersen, M.J. Gaffey, and P.A. Abell | title=Near-IR spectral evidence for the presence of iron-poor orthopyroxenes on the surfaces of six M-type asteroids| journal= Icarus| volume = 175| issue = 1| year=2005| bibcode=2005Icar..175..141H | page = 141 | doi = 10.1016/j.icarus.2004.10.017}}</ref>