通过星光遮蔽测定木星特洛伊 asteroid (2207) Antenor 的尺寸与形状
地球与行星天体物理
2025-07-29 v1
摘要
围绕拉格朗日 L5 位于木星的特洛伊小天体 (2207) Antenor 近年来被观察,其旋转光曲线表明其很可能是一颗双小行星候选体。通过星光遮蔽,我们报告了来自欧洲和北美的三个遮蔽事件结果,用于估算木星特洛伊 (2207) Antenor 的二维表面观尺寸和形状。对于最佳拟合的天平面椭圆,我们确定 Antenor 在遮蔽时刻的二维表面观赤道半径为 54.30 ± 0.99 km,椭率为 0.144 ± 0.051。我们指出 2021 年 6 月 12 日的正检测显示一种令人兴趣的特征,可解释为该天体约 11 km 的大型地形特征,或可提供进一步证据表明该天体实际上是近似或接触双星。我们还确定了测星位置,确定了我们首选解的不确定性为几个毫弧秒(mas)。
引用
@article{arxiv.2507.19638,
title = {Size and Shape of Jupiter Trojan (2207) Antenor from Stellar Occultations},
author = {Feliphe S. Ferreira and Julio I. B. Camargo and Bruno E. Morgado and Viviane Peixoto and Josselin Desmars and Felipe Braga-Ribas and Altair Gomes-Junior and Bruno Sicardy and Jose Ortiz and R. Vieira-Martins and C. Pereira and Luana Liberato and Marcelo Assafin and Yucel Kilic and Rodrigo Boufleur and Flavia Rommel and Gustavo Benedetti-Rossi and Martin Banda-Huarca and Franck Marchis and Paolo Tanga and Benoit Blanc and Erick Bondoux and Alexandra Burnett and S. Calavia-Belloc and O. Canales-Moreno and Norman Carlson and Matthieu Conjat and Tony George and R. Gonçalves and R. Iglesias-Marzoa and Grego Krannich and D. Lafuente-Aznar and Paul Maley and Jordi Marco and C. Schnabel and Delwin Shand and Kevin Wagner},
journal= {arXiv preprint arXiv:2507.19638},
year = {2025}
}
备注
Manuscript accepted for publication in The Astronomical Journal. 14 pages, 8 figures, 5 tables