Minor Bodies of the Solar System

    General
    Description

    This project studies the physical and compositional properties of the so-called minor bodies of the Solar System, that includes asteroids, icy objects, and comets. Of special interest are the trans-neptunian objects (TNOs), including those considered the most distant objects detected so far (Extreme-TNOs or ETNOs); the comets and the comet-asteroid transitional objects (Centaurs and main belt comets or MBCs); the primitive asteroids. The last two groups contain the most primordial and pristine material of the Solar System and so they provide the clues to understand the origin and the subsequent evolution of our system. Among asteroid population, the near-Earth asteroids or NEAs, as well as the potentially hazardous asteroids (PHAs) are of particular interest: due to their proximity to the Earth, they are the most accesible to spacecraft and so are ideal for in-situ or even sample-return space missions. In addition they are considered as future potential resources of materials (asteroid mining), and they are also impact hazards for the Earth. Regarding primitive asteroids, it is remarkable the spectroscopic survey (visible and near-infrared) led by the PI of this project (PRIMitive Asteroids Spectroscopic Survey - PRIMASS). This survey received financial support from NASA (17-PDART17_2-0097, PI: N. Pinilla-Alonso, 137.000€ - 2 years) in order to upload and archive at the Small Bodies Node of the NASA Planetary Data System the more than 800 spectra obtained.

    The compositional surface properties, as well as the physical and thermal properties of these objects are inferred through imaging, photometry, and spectroscopy in a wide range of wavelengths (from 0.35 up to 24 microns). Data are interpreted using scattering and thermo-physical models. This project works also in the study of the physical properties of the cometary nuclei, as well as properties of dust and coma in the tails of the MBCs and the mechanisms that generate them.

    This group maintains several international collaborations with other groups, and some of their members are also members of (1) the Science Team of the NASA OSIRIS-REx mission, in particular the Image Processing Working Group, were they work with the images obtained with the OCAMS suite of cameras; (2) the coordination of an international group to study NEAs (EURONEAR); (3) the central core of the proponents of ESA M5 missions CASTALIA, CASTAway, and Hera; (4) the Center for Lunar and Asteroid Surface Science - CLASS (NASA); (5) the Solar System group of the Euclid consortium; (6) the surveys J-PLUS and J-PASS for the exploitation of observations of Solar System objects; (7) the Solar System working group of Gaia and JWST.

    Principal investigator
    Project manager
    Collaborators
    Dr.
    Noemí Pinilla-Alonso
    Dr.
    Humberto Campins
    Dr.
    Fernando Moreno Danvila
    Dr.
    Y. Fernández
    Dr.
    José Luis Ortiz
    Dr.
    R. Duffard
    Prof.
    R. Hil-Hutton

    Related publications

    • Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution
      The near-Earth carbonaceous asteroid (162173) Ryugu is expected to contain volatile chemical species that could provide information on the origin of Earth’s volatiles. Samples of Ryugu were retrieved by the Hayabusa2 spacecraft. We measured noble gas and nitrogen isotopes in Ryugu samples and found that they are dominated by presolar and primordial
      Okazaki, Ryuji et al.

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      3
      2023
      Citations
      5
    • Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu
      The Hayabusa2 spacecraft collected samples from the surface of the carbonaceous near-Earth asteroid (162173) Ryugu and brought them to Earth. The samples were expected to contain organic molecules, which record processes that occurred in the early Solar System. We analyzed organic molecules extracted from the Ryugu surface samples. We identified a
      Naraoka, Hiroshi et al.

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      3
      2023
      Citations
      34
    • Macromolecular organic matter in samples of the asteroid (162173) Ryugu
      Samples of the carbonaceous asteroid (162173) Ryugu were collected and brought to Earth by the Hayabusa2 spacecraft. We investigated the macromolecular organic matter in Ryugu samples and found that it contains aromatic and aliphatic carbon, ketone, and carboxyl functional groups. The spectroscopic features of the organic matter are consistent with
      Yabuta, Hikaru et al.

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      0
      2023
      Citations
      22
    • Near to Mid-infrared Spectroscopy of (65803) Didymos as Observed by JWST: Characterization Observations Supporting the Double Asteroid Redirection Test
      The Didymos binary asteroid was the target of the Double Asteroid Redirection Test (DART) mission, which intentionally impacted Dimorphos, the smaller member of the binary system. We used the Near-Infrared Spectrograph and Mid-Infrared Instrument instruments on JWST to measure the 0.6-5 and 5-20 μm spectra of Didymos approximately two months after
      Rivkin, Andrew S. et al.

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      11
      2023
      Citations
      7
    • Scaling slowly rotating asteroids with stellar occultations
      Context. As evidenced by recent survey results, the majority of asteroids are slow rotators (spin periods longer than 12 h), but lack spin and shape models because of selection bias. This bias is skewing our overall understanding of the spins, shapes, and sizes of asteroids, as well as of their other properties. Also, diameter determinations for
      Marciniak, A. et al.

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      11
      2023
      Citations
      2
    • The Second International Asteroid Warning Network Timing Campaign: 2005 LW3
      The Earth close approach of near-Earth asteroid 2005 LW3 on 2022 November 23 represented a good opportunity for a second observing campaign to test the timing accuracy of astrometric observation. With 82 participating stations, the International Asteroid Warning Network collected 1046 observations of 2005 LW3 around the time of the close approach
      Farnocchia, Davide et al.

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      11
      2023
      Citations
      1
    • A review of planetary systems around HD 99492, HD 147379, and HD 190007 with HARPS-N
      Context. The Rocky Planet Search (RPS) program is dedicated to a blind radial velocity (RV) search of planets around bright stars in the northern hemisphere, using the high-resolution echelle spectrograph HARPS-N installed on the Telescopio Nazionale Galileo (TNG). Aims: The goal of this work is to revise and update the properties of three
      Stalport, M. et al.

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      10
      2023
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      3
    • The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters
      Context. With the growth of comparative exoplanetology, it is increasingly clear that the relationship between inner and outer planets plays a key role in unveiling the mechanisms governing formation and evolution models. For this reason, it is important to probe the inner region of systems hosting long-period giants in search of undetected lower
      Pinamonti, M. et al.

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      9
      2023
      Citations
      1
    • Heliocentric distance dependence of zodiacal light observed by Hayabusa2#
      Zodiacal light (ZL) is sunlight scattered by interplanetary dust particles (IDPs) at optical wavelengths. The spatial distribution of IDPs in the Solar System may hold an important key to understanding the evolution of the Solar System and material transportation within it. The number density of IDPs can be expressed as n (r ) ∼r -α , and the
      Tsumura, Kohji et al.

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      12
      2023
      Citations
      1
    • Discovery and physical characterization as the first response to a potential asteroid collision: The case of 2023 DZ<SUB>2</SUB>
      Context. Near-Earth asteroids (NEAs) that may evolve into impactors deserve detailed threat assessment studies. Early physical characterization of a would-be impactor may help in optimizing impact mitigation plans. We first detected NEA 2023 DZ 2 on 27 February 2023. After that, it was found to have a minimum orbit intersection distance (MOID) with
      Popescu, Marcel M. et al.

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      8
      2023
      Citations
      3
    • Characterization of the Ejecta from the NASA/DART Impact on Dimorphos: Observations and Monte Carlo Models
      The NASA Double Asteroid Redirection Test (DART) spacecraft successfully crashed on Dimorphos, the secondary component of the binary (65803) Didymos system. Following the impact, a large dust cloud was released, and a long-lasting dust tail developed. We have extensively monitored the dust tail from the ground and the Hubble Space Telescope. We
      Moreno, Fernando et al.

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      8
      2023
      Citations
      18
    • Long-lasting activity of asteroid (248370) 2005 QN<SUB>173</SUB>
      We present the results of observations of asteroid (248370) QN 173 obtained during July 2021-January 2022 with three telescopes. Our analysis revealed the presence of the dust tail for about half of a year. The direct images of the asteroid were obtained with broad-band filters. No emissions were revealed in the spectra, and the spectrum of the
      Ivanova, Oleksandra et al.

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      10
      2023
      Citations
      1
    • Borderline hyperbolic comet C/2021 O3 (PANSTARRS) was fading as it approached the Sun
      We present an observational and numerical study of the borderline hyperbolic comet C/2021 O3 (PANSTARRS) performed during its recent passage through the inner Solar system. Our observations were carried out at OASI and SOAR between 2021 October and 2022 January, and reveal a low level of activity relative to which was measured for other long-period
      Evangelista-Santana, M. et al.

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      9
      2023
      Citations
      1
    • Deep K-band surface brightness photometry of dE galaxies. I. Local Volume and Virgo cluster
      Context. Dwarf elliptical galaxies (dEs) are the most abundant in the Universe. Research into these objects in connection with late-type dwarf galaxies is important for evaluating theories of dwarf galaxy formation and evolution. Aims: Our past studies (2000-2010) suggested a possible evolutionary link between early- and late-type dwarf galaxies
      Pinter, V. et al.

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      7
      2023
      Citations
      0
    • Inflight calibration of the optical navigation camera for the extended mission phase of Hayabusa2
      After delivering its sample capsule to Earth, the Hayabusa2 spacecraft started its extended mission to perform a flyby of asteroid 2001 CC 21 in 2026 and rendezvous with asteroid 1998 KY 26 in 2031. During the extended mission, the optical navigation camera (ONC) of Hayabusa2 will play an important role in navigation and science observations, but
      Yamada, Manabu et al.

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      12
      2023
      Citations
      2
    • Physical properties of NEOs derived from their phase curves
      The observation of Near Earth objects (NEOs) allows us to study the physical properties of the smallest size bodies of our Solar System and help impose constraints on their origin and evolution. The solar phase curve is a very important tool to derive diverse physical properties of a small body so that we set up an observational campaign to derive
      Arcoverde, Plícida et al.

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      7
      2023
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      3
    • Scientific CMOS Sensors in Astronomy: IMX455 and IMX411
      Scientific complementary metal-oxide-semiconductor (CMOS) detectors have developed quickly in recent years thanks to their low cost and high availability. They also have some advantages over charge-coupled devices (CCDs), such as high frame rate or typically lower readout noise. These sensors started to be used in astronomy following the
      Alarcon, Miguel R. et al.

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      5
      2023
      Citations
      15
    • Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
      K2-136 is a late-K dwarf (0.742 ± 0.039 M ⊙) in the Hyades open cluster with three known, transiting planets and an age of 650 ± 70 Myr. Analyzing K2 photometry, we found that planets K2-136b, c, and d have periods of 8.0, 17.3, and 25.6 days and radii of 1.014 ± 0.050 R ⊕, 3.00 ± 0.13 R ⊕, and 1.565 ± 0.077 R ⊕, respectively. We collected 93
      Mayo, Andrew W. et al.

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      6
      2023
      Citations
      7
    • The two rings of (50000) Quaoar
      Context. Quaoar is a classical trans-Neptunian object (TNO) with an area-equivalent diameter of 1100 km and an orbital semi-major axis of 43.3 astronomical units. Based on stellar occultations observed between 2018 and 2021, an inhomogeneous ring (Q1R, i.e., Quaoar's first ring) has been detected around this body. Aims: A new stellar occultation by
      Pereira, C. L. et al.

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      5
      2023
      Citations
      10
    • Observations of two superfast rotator NEAs: 2021 NY<SUB>1</SUB> and 2022 AB
      In the framework of the visible NEAs observations survey (ViNOS) that uses several telescopes at the Canary Islands observatories since 2018, we observed two superfast rotator NEAs, 2021 NY 1 and 2022 AB. We obtained photometry and spectrophotometry of both targets and visible spectroscopy of 2022 AB. Light curves of 2021 NY 1 obtained in four
      Licandro, Javier et al.

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      5
      2023
      Citations
      5

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