Photometric observations of asteroid 4 Vesta by the OSIRIS cameras onboard the Rosetta spacecraft

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Volume 533 (September 2011)

A&A, 533 (2011) L9

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Table 1

Vesta spectrophotometry from Osiris.

UT_start	Inst.	F	λ_c	exp. (s)	F_Abs(α)	p

10:56:26	NAC	15	269.30	48.52	0.021 ± 0.002	0.10
10:57:26	NAC	16	360.00	1.67	0.042 ± 0.002	0.20
10:57:39	NAC	28	743.70	0.26	0.080 ± 0.001	0.38
10:57:50	NAC	27	701.20	0.74	0.078 ± 0.002	0.37
10:58:03	NAC	24	480.70	0.23	0.066 ± 0.002	0.32
10:58:14	NAC	23	535.70	0.24	0.071 ± 0.001	0.34
10:58:25	NAC	22	649.20	0.15	0.076 ± 0.001	0.36
10:58:37	NAC	41	882.10	0.70	0.057 ± 0.001	0.27
10:58:49	NAC	51	805.30	0.79	0.072 ± 0.001	0.34
10:59:01	NAC	61	931.90	1.96	0.055 ± 0.001	0.26
10:59:14	NAC	71	989.30	4.34	0.061 ± 0.002	0.29
10:59:30	NAC	58	790.50	10.00	0.075 ± 0.001	0.36
11:00:29	WAC	18	612.60	14.70	0.073 ± 0.002	0.35
11:00:52	WAC	17	631.60	57.77	0.075 ± 0.003	0.36
11:01:57	WAC	16	590.70	43.57	0.073 ± 0.003	0.35
11:02:48	WAC	15	572.10	16.76	0.072 ± 0.002	0.35
11:03:13	WAC	14	388.40	270.88	0.054 ± 0.006	0.26
11:07:51	WAC	13	375.60	119.46	0.048 ± 0.004	0.23
11:09:58	WAC	12	629.80	1.00	0.076 ± 0.001	0.36
11:10:07	WAC	21	537.20	2.74	0.072 ± 0.001	0.34
11:10:18	WAC	71	325.80	441.86	0.029 ± 0.006	0.14

Notes. The observations were acquired on 1 May 2010, at a phase angle of 52.45−52.47° and at a Rosetta-Vesta distance of 0.284857285−0.284809694 AU. F is the filter combination, λ_c the filter central wavelength, exp. the exposure time, F_Abs the absolute reflectance at α = 52.4°, and p the geometric albedo estimated assuming the same phase function for all the wavelengths.

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