Table · dataset · 2025
Occultation light-curves 2007 OC10
Listed in IVOA Registry (Virtual Observatory)
The shapes of only 12 trans-Neptunian objects have been directly measured, offering crucial insights into their internal structure.
Description
These properties are strongly connected to the processes that shaped the early Solar System, and provide important clues about its evolution. The aim of the present work is to characterise the size, shape, geometric albedo, and beaming parameter of the TNO (470316) 2007 OC10.
We compared these values to the effective diameter and geometric albedo obtained from thermal data by the TNOs are Cool survey. We also combined occultation and thermal data to constrain the size of a putative unresolved satellite. We predicted an occultation of the star Gaia DR3 2727866328215869952 by 2007 OC10 on 2022 August 22.
Read the rest (3 more)
Four stations detected the occultation. We implemented an elliptical shape model for the projection of 2007 OC10. Following a Bayesian approach, we obtained the posterior probability density in the model parameter space using a Markov chain Monte Carlo method.
The elliptical limb of 2007 OC 10 has semi-axes of 215_-7_^+10^x141_-23_^+24^km, and thus the projected axis ratio is b/a=0.58_-0.16_^+0.16^. The area-equivalent diameter is 330-55+56 km. From our own absolute magnitude value of HV=5.40+/-0.02, the geometric albedo is pV=11.2_-5.0_^+2.1^%.
Combining the occultation results with thermal data, we constrain the beaming parameter to eta=1.42_-0.58_^+0.75^. Occultation data reveal that the star is double. The secondary star has a position angle with respect to the primary of 56_-17_^+3^ degrees, has an angular separation of 57_-11_^+4^mas, and is 1.18_-0.07_^+0.07^ magnitudes fainter than the primary.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/697/A157 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025A&A...697A.157G ui.adsabs.harvard.edu/abs/2025A%26A...697A.157G ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/697/a157 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/697/a157 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |