Skip to content
DraconiticResearch
Search Sources API
203,234 studies31 sourcesUpdated 17 min ago
Peer-reviewedCC BY 4.0Monthly Notices of the Royal Astronomical Society

Taxonomic Classification of some Members of the NEOs Atiras Population

  • Eduardo Rondón1
  • Jonatan Michimani1
  • Filipe Monteiro1,2
  • Weslley Pereira1
  • Plicida Arcoverde1
  • Marçal Evangelista3
  • Fernando Roig1
  • Teresinha Rodrigues1
  • Daniela Lazzaro1
  1. 1Observatório Nacional , Rua Gal. José Cristino 77, 20921-400, Rio de Janeiro ,
  2. 2Universidade Estadual Paulista (UNESP) , Guaratinguetá, São Paulo ,
  3. 3Universidade Estadual de Feira de Santana Departamento de Física, , Bahia ,
Open at sourcePDFDOICite

Abstract

To observe IEOs population, such as the NEOs Atiras, is a great challenge since they are only possible to observe at low altitudes with very short observational time window, close to evening and morning twilights which could cause images affected by the glare of the Sun. Therefore, the physical properties of these objects are poorly known. In this work we performed a taxonomic study of these objects, using an analysis of phase curve, colors and spectra, where the classification through these different techniques is consistent. Using the phase curve and colors we obtained a preliminary taxonomic classification for the NEOs-Atiras (163693) Atira and (481817) 2008 UL90, both associated to low-albedo classes, P or C. The classification of (413563) 2005 TG45, on the other hand, is related to a silicate-rich class such as S, Q, V, R or A-type. Using photometric spectra we found that 2021 PH27 is a B-type. Furthermore, using spectroscopy we found that 2008 EA32 is an L-type and 2017 YH is an O-type or Q-type. However, considering that 2008 EA32 could have been affected by phase reddening and space weathering, it is possible that their classification changed from Q- or S- to L-type. In contrast, despite the proximity of the Sun and a large observational phase angle, asteroid 2017 YH maintains a moderate spectral slope. This suggest an extremely young surface that may have recently undergone a resurfacing process. In general, these results indicate diverse possible origins for the NEOs-Atiras population.

Related

  1. Probing the Taxonomic Diversity of the Small Near-Earth Object Population
    Andy J. López-Oquendo, David E. Trilling, Michael Mommert +1
    arXivPreprintCC BY 4.0Full textPlanetary science & exoplanetsarXiv
  2. FOMO-Z. Optimal galaxy classification, photometric redshifts, and reconstruction of population distributions
    G. F. Lesci
    arXivPreprintarXiv licenceFull textCosmologyGalaxiesarXiv
  3. Euclid Early Release Observations of the Barnard 30 dark cloud I. Brown dwarfs and planetary mass candidate members at the core of the association
    D Barrado, H Bouy, E.L Martin +8
    HALPreprintLicence not statedGeneral astronomyGeneral physicsHAL
  4. Research of signs of star formation in three S0 galaxies - members of isolated pairs
    I. S. Proshina, O. K. Sil'chenko, A. Yu. Kniazev +1
    arXivPreprintarXiv licenceFull textGalaxiesarXiv
  5. A Hectospec Spectroscopic Census of Kinematic Members in the Orion Nebula Cluster
    Jesús Hernández, Ezequiel Manzo-Martínez, Lucía Adame +21
    arXivPreprintarXiv licenceFull textGalaxiesPlanetary science & exoplanetsarXiv

Cite

BibTeXRIS
BibTeX
@article{rondon2026taxonomic,
  title = {{Taxonomic Classification of some Members of the NEOs Atiras Population}},
  author = {Eduardo Rondón and Jonatan Michimani and Filipe Monteiro and Weslley Pereira and Plicida Arcoverde and Marçal Evangelista and Fernando Roig and Teresinha Rodrigues and Daniela Lazzaro},
  journal = {Monthly Notices of the Royal Astronomical Society},
  year = {2026},
  month = oct,
  doi = {10.1093/mnras/stag1969},
  url = {https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag1969/8931744},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Taxonomic Classification of some Members of the NEOs Atiras Population
AU  - Eduardo Rondón
AU  - Jonatan Michimani
AU  - Filipe Monteiro
AU  - Weslley Pereira
AU  - Plicida Arcoverde
AU  - Marçal Evangelista
AU  - Fernando Roig
AU  - Teresinha Rodrigues
AU  - Daniela Lazzaro
PY  - 2026
DA  - 2026/10/16
JO  - Monthly Notices of the Royal Astronomical Society
DO  - 10.1093/mnras/stag1969
UR  - https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag1969/8931744
AB  - To observe IEOs population, such as the NEOs Atiras, is a great challenge since they are only possible to observe at low altitudes with very short observational time window, close to evening and morning twilights which could cause images affected by the glare of the Sun. Therefore, the physical properties of these objects are poorly known. In this work we performed a taxonomic study of these objects, using an analysis of phase curve, colors and spectra, where the classification through these different techniques is consistent. Using the phase curve and colors we obtained a preliminary taxonomic classification for the NEOs-Atiras (163693) Atira and (481817) 2008 UL90, both associated to low-albedo classes, P or C. The classification of (413563) 2005 TG45, on the other hand, is related to a silicate-rich class such as S, Q, V, R or A-type. Using photometric spectra we found that 2021 PH27 is a B-type. Furthermore, using spectroscopy we found that 2008 EA32 is an L-type and 2017 YH is an O-type or Q-type. However, considering that 2008 EA32 could have been affected by phase reddening and space weathering, it is possible that their classification changed from Q- or S- to L-type. In contrast, despite the proximity of the Sun and a large observational phase angle, asteroid 2017 YH maintains a moderate spectral slope. This suggest an extremely young surface that may have recently undergone a resurfacing process. In general, these results indicate diverse possible origins for the NEOs-Atiras population.
SN  - 0035-8711
SN  - 1365-2966
ER  -