Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects

Mottola, S.; Martino, M. Di; Erikson, A.; Gonano-Beurer, M.; Carbognani, A.; Carsenty, U.; Hahn, Gerhard; Schober, Hans-Josef; Lahulla, F.; Delbò, M.; Lagerkvist, C. I.

doi:10.1088/0004-6256/141/5/170

Cited by 45 publications

(19 citation statements)

References 33 publications

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“…5 we plot the amplitude-period diagram for Trojans from the literature (Molnar et al 2008;Mottola et al 2011;French et al 2015;Waszczak et al 2015) compared to our results. It is known that Main Belt families are characterized by specific brightness variation distributions (Szabó & Kiss 2008).…”

Section: Period and Amplitude Distributionsmentioning

confidence: 88%

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The heart of the swarm: K2 photometry and rotational characteristics of 56 Jovian Trojan asteroids

Szabó

Pál

Kiss

et al. 2017

A&A

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We present fully covered phased light curves for 56 Jovian Trojan asteroids as observed by the K2 mission of the Kepler space telescope. This set of objects has been monitored during Campaign 6 and represents a nearly unbiased subsample of the population of small solar system bodies. We derived precise periods and amplitudes for all Trojans, and found their distributions to be compatible with the previous statistics. We point out, however, that ground-based rotation periods are often unreliable above 20 h, and we find an overabundance of rotation periods above 60 h compared with other minor planet populations. From amplitude analysis we derive a rate of binarity of 20 ± 5%. Our spin rate distribution confirms the previously obtained spin barrier of ∼5 h and the corresponding ∼0.5 g cm −3 cometary-like density limit, also suggesting a high internal porosity for Jovian Trojans. One of our targets, asteroid 65227 exhibits a double rotation period, which can either be due to binarity or the outcome of a recent collision.

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Section: Period and Amplitude Distributionsmentioning

confidence: 88%

“…Our period determinations are plotted against data from the literature (Molnar et al 2008;Mottola et al 2011;French et al 2015;Waszczak et al 2015) in Fig. 4.…”

Section: Period and Amplitude Distributionsmentioning

confidence: 99%

The heart of the swarm: K2 photometry and rotational characteristics of 56 Jovian Trojan asteroids

Szabó

Pál

Kiss

et al. 2017

A&A

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“…Most of the largest Jupiter Greeks and Trojans have published rotation periods (Mottola et al, 2011), with concerted efforts ongoing to extend that dataset down to fainter objects (French et al, 2015). These surveys also provide separate data on the origins and evolution of the Trojan swarm by providing information regarding collisional histories for these objects.…”

Section: Trojan Photometry In the Literaturementioning

confidence: 99%

Photometric colors of the brightest members of the Jupiter L5 Trojan cloud

Chatelain

Henry²,

French

et al. 2016

Icarus

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The L5 Jupiter Trojan asteroids are minor bodies that orbit 60 degrees behind Jupiter. Because these orbits are stable over the lifetime of the Solar System, the properties of these objects may inform us about the conditions under which the Solar System formed. We present BV R KC I KC photometry for the 42 intrinsically brightest and presumably largest members of the L5 Jupiter Trojans. We define a new principal color component a * T that is indicative of taxonomic types relevant to the Jupiter Trojan asteroids. We find that 76% of the largest L5 Jupiter Trojans are consistent with a D-type classification, while 24% show shallower slopes more consistent with X-type and C-Type classifications. Such a breakdown is consistent with other surveys and will help to place the Trojans in the larger context of the Solar System.

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“…Lightcurve observations using a normal optical telescope allow the reconstruction of the shape of an object (e.g. Mottola et al (2011). Thermal infrared observations are crucial to determine the albedo of an asteroid; a major recent asset here is the US space mission NEOWISE (Mainzer et al, 2011).…”

Section: Physical Observationsmentioning

confidence: 99%