Physical properties of asteroid 308635 (2005 YU55) derived from multi-instrument infrared observations during a very close Earth approach

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Table 6

Comparison between AO results and our findings.

Sense of	Spin axis	AO size	AO D_equ	TPM D_equ
rotation	(λ_ecl, β_ecl)	[m]	[m]	[m]

Prograde	339°, +84°	337 × 324 × 267	308 ± 9	333
Retrograde	22°, –35°	328 × 312 × 245	293 ± 14	299^a
Retrograde	southern poles		307 ± 15	300–310^b

Notes.

^(a)

This solution requires an unacceptably high thermal inertia well above 2000 Jm^-2 s^-0.5 K^-1;

^(b)

diameter range of all high obliquity cases β_ecl ≤ − 60°.

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