153 Hilda
Outer main-belt asteroid
title: "153 Hilda" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["hilda-asteroids", "discoveries-by-johann-palisa", "named-minor-planets", "articles-containing-video-clips", "objects-observed-by-stellar-occultation", "p-type-asteroids-(tholen)", "x-type-asteroids-(smass)", "astronomical-objects-discovered-in-1875"] description: "Outer main-belt asteroid" topic_path: "general/hilda-asteroids" source: "https://en.wikipedia.org/wiki/153_Hilda" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Outer main-belt asteroid ::
::data[format=table title="Infobox planet"]
| Field | Value |
|---|---|
| name | 153 Hilda |
| image | Hilda-LB1-mag14.jpg |
| caption | Star field showing Hilda (apmag 14.2) |
| background | #D6D6D6 |
| minorplanet | yes |
| mpc_name | (153) Hilda |
| alt_names | A875 VC; 1935 GD |
| pronounced | |
| adjective | Hildian |
| discovery_ref | |
| discoverer | J. Palisa |
| discovery_site | Austrian Naval Obs. |
| discovered | 2 November 1875 |
| mp_category | Main belt (Hilda) |
| orbit_ref | |
| epoch | 31 July 2016 (JD 2457600.5) |
| observation_arc | 121.05 yr (44215 d) |
| uncertainty | 0 |
| semimajor | 3.9783 AU |
| eccentricity | 0.13971 |
| period | 2898.3 days 7.94 yr (2898.3 d) |
| inclination | 7.8249° |
| perihelion | 3.4225 AU |
| aphelion | 4.5341 AU |
| asc_node | 228.16° |
| arg_peri | 38.617° |
| mean_anomaly | 51.690° |
| mean_motion | / day |
| jupiter_moid | 0.569657 AU |
| tisserand | 3.023 |
| dimensions | |
| mass | ~5.2 kg |
| escape_velocity | ~ 6 m/s |
| abs_magnitude | 7.48 |
| rotation | 5.9587 h |
| albedo | |
| spectral_type | P |
| :: |
| name= 153 Hilda | image= Hilda-LB1-mag14.jpg | image_scale = | caption= Star field showing Hilda (apmag 14.2) | background= #D6D6D6 | minorplanet= yes | mpc_name= (153) Hilda | alt_names= A875 VC; 1935 GD | pronounced= | adjective= Hildian | discovery_ref= | discoverer = J. Palisa | discovery_site = Austrian Naval Obs. | discovered= 2 November 1875 | mp_category= Main belt (Hilda) | orbit_ref= | epoch= 31 July 2016 (JD 2457600.5) | observation_arc= 121.05 yr (44215 d) | uncertainty= 0 | semimajor= 3.9783 AU | eccentricity= 0.13971 | period=2898.3 days 7.94 yr (2898.3 d) | inclination= 7.8249° | perihelion= 3.4225 AU | aphelion= 4.5341 AU | asc_node= 228.16° | arg_peri= 38.617° | mean_anomaly= 51.690° | mean_motion= / day | jupiter_moid= 0.569657 AU | tisserand= 3.023 | dimensions= | mass= ~5.2 kg | escape_velocity= ~ 6 m/s | abs_magnitude= 7.48 | rotation= 5.9587 h | albedo= | spectral_type= P
153 Hilda is a large asteroid in the outer main belt, with a diameter of 170 km. It is the largest member of the Hilda family, a collisional family of asteroids in the Hilda region.
Orbit and family
::figure[src="https://upload.wikimedia.org/wikipedia/commons/d/de/HildasOrbitWithLagrangePointsLousy.ogv" caption="A schematic of the orbit of 153 Hilda (green), with [[Jupiter]] (red). The open red circles are the Jovian [[Lagrange point]]s that Hilda approaches.Based on orbital data from the year 2000. Hilda seldom approaches the Lagrangians exactly."] ::
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;{{cite journal |last=Brož |first=M. |author2=Vokrouhlický, D. |title=Asteroid families in the first-order resonances with Jupiter |journal=Monthly Notices of the Royal Astronomical Society |volume=390 |issue=2 |pages=715–732 |year=2008 |doi=10.1111/j.1365-2966.2008.13764.x |doi-access=free |bibcode=2008MNRAS.390..715B|arxiv=1104.4004|s2cid=53965791
The orbital plane of 153 Hilda is inclined at an angle of 7.82° to the plane of the ecliptic. It has an orbital eccentricity (ovalness) of 0.13971. Multiple light curves of the asteroid provide a consistent rotation period of approximately
Notes
References
References
- {{dict.com. Hilda
- Bhattacharya & Lichtman (2016) ''Solar Planetary Systems'', p. 6
- Schmadel, Lutz D.. (2003). "Dictionary of Minor Planet Names". Springer Science & Business Media.
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