A schematic of the orbit of 153 Hilda (green), with Jupiter (red). The open red circles are the Jovian Lagrange points that Hilda approaches.[note 1]
Hilda gives its name to an asteroid group called the Hilda group (or Hildas for short). It is not a true asteroid family, since the members are not physically related, but rather share similar orbital elements. The Hildas are locked in a 2:3 orbital resonance with Jupiter;[6] since Jupiter takes 11.9 years to orbit the Sun while Hilda takes 7.9 years,[1] Jupiter orbits the Sun twice for every 3 orbits that Hilda completes. There are over 1,100 other objects known to be in a 2:3 resonance with Jupiter.[6]
^Bhattacharya & Lichtman (2016) Solar Planetary Systems, p. 6
^ a bLagerkvist, C. -I.; et al. (December 1995). "Physical Studies of Asteroids XXX: The Asteroid 153 Hilda". Earth, Moon, and Planets. 71 (3): 189–194. Bibcode:1995EM&P...71..189L. doi:10.1007/BF00612956. S2CID 120302355.
^Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 29. ISBN 978-3-540-00238-3.
^ a bBrož, M.; Vokrouhlický, D. (2008). "Asteroid families in the first-order resonances with Jupiter". Monthly Notices of the Royal Astronomical Society. 390 (2): 715–732. arXiv:1104.4004. Bibcode:2008MNRAS.390..715B. doi:10.1111/j.1365-2966.2008.13764.x. S2CID 53965791.
^Pilcher, Frederick (July 2020). "Lightcurves and Rotation Periods of 83 Beatrix, 86 Semele, 118 Peitho 153 Hilda, 527 Euryanthe, and 549 Jessonda". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 47 (3): 192–195. Bibcode:2020MPBu...47..192P.
External links
The triangle formed by the Hilda asteroids EasySky
153 Hilda at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info