(50000) Quaoar: Surface composition variability
نویسندگان
چکیده
منابع مشابه
Composition of KBO (50000) Quaoar
Aims. The objective of this work is to investigate the physical properties of objects beyond Neptune – the new frontiers of the Solar System – and in particular to study the surface composition of (50 000) Quaoar, a classical Transneptunian (or Kuiper Belt) object. Because of its distance from the Sun, Quaoar is expected to have preserved, to a degree, its original composition. Our goals are to...
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The first phase of the Caltech Wide Area Sky Survey occurred from late November 2001 through mid-April 2003. We present preliminary results from this survey which has detected 28 bright Kuiper Belt Objects (KBOs) and 4 Centaurs, 19 of which were discovered in our survey including Quaoar, the largest KBO, as well as 6 of the 10 intrinsically brightest KBOs. We have surveyed 5108 square degrees o...
متن کاملDetection of Methane on Kuiper Belt Object (50000) Quaoar
The near-infrared spectrum of (50000) Quaoar obtained at the Keck Observatory shows distinct absorption features of crystalline water ice, solid methane, and ethane, and possibly other higher order hydrocarbons. Quaoar is only the fifth Kuiper Belt object (KBO) on which volatile ices have been detected. The small amount of methane on an otherwise water ice–dominated surface suggests that Quaoar...
متن کاملDirect Measurement of the Size of the Large Kuiper Belt Object (50000) Quaoar
We imaged the recently discovered bright Kuiper belt object (50000) Quaoar with the Hubble Space Telescope High Resolution Camera to directly determine its size. The point-spread function (PSF) of each of 16 images was carefully measured from a field star 1300 from Quaoar, and the expected PSF at the location of Quaoar was convolved with Quaoar’s motion vector and a model resolved disk. A least...
متن کاملLimits on Quaoar ’ s Atmosphere
Here we present high cadence photometry taken by the Acquisition Camera on Gemini South, of a close passage by the ∼ 540 km radius Kuiper Belt Object, (50000) Quaoar, of a r’=20.2 background star. Observations before and after the event show that the apparent impact parameter of the event was 0.019±0.004”, corresponding to a close approach of 580±120 km to the centre of Quaoar. No signatures of...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2015
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201526119