Compositional characterisation of asteroid (84) Klio with JWST

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Table 2

Observational details and asteroid’s orbital and physical properties.

Grating/filter	Start time (UT)	Exposure time (s)	r (au)	∆ (au)	α (°)
G140M/F100LP	12:12	175
G235M/F170LP	12:29	175	2.555	2.313	23.17
G395M/F290LP	12:47	175

a (au)	e	i (°)	H_V	D (km)	pV

2.367	0.24	9.31	9.34	79.2±1.6	0.053±0.002

Notes. Information includes the asteroid’s distance to the Sun (r) and to JWST (Δ), phase angle (α), proper semi-major axis (a), eccentricity (e), inclination (i), absolute magnitude (H_v), geometric albedo (p_v), and diameter (D).

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