Near-infrared spectroscopic characterization of the Pallas family

Open Access

Table 1

Observational parameters of 22 objects.

Asteroid –	UT date –	r_h (AU)	Δ (AU)	Φ (deg)	V (mag)	Airmass –	Standard star –
3579	2010–Mar.–29	2.132	1.144	5.11	16.22	1.19	SA105-56
4969	2009–Aug.–08	2.324	1.610	21.44	16.83	1.02	HD 218633
5222	2010–Mar.–28	2.373	1.470	13.05	15.07	1.89	HD 10086
5234	2010–Mar.–29	3.177	2.275	9.11	17.18	1.52	HD 114964
5690^(*)	2009–Oct.–18	2.217	1.325	14.86	16.38	1.06	HD 223238
25853	2012–Nov.–05	2.267	1.401	15.57	16.93	1.34	HD 19328
33750	2010–Mar.–29	1.989	1.104	17.93	15.55	1.39	HD 106003
46037	2011–Sep.–27	1.981	1.193	23.27	16.98	1.15	HD 180883
57050	2012–Jan.–03	1.777	1.285	32.72	17.00	1.30	HD 15627
58296	2012–Jul.–22	2.061	1.447	27.08	17.85	1.03	HD182081
66714	2010–Mar.–28	2.261	1.291	7.83	17.19	1.29	SA105–56
66803	2012–Jul.–22	3.124	2.313	13.05	18.05	1.42	HD 154805
66846	2012–Jul.–19	1.926	1.186	26.63	17.07	1.13	BD+303643
68299	2012–Nov.–06	2.162	1.275	15.30	16.97	1.15	HD 9729
69371	2012–Nov.–05	2.265	1.494	19.51	17.40	1.16	HD 224383
87306	2011–Jan.–05	3.188	2.215	3.16	18.00	1.01	HD 42807
90368	2013–Sep.–02	1.835	1.153	29.61	16.73	1.24	HD 212809
101283	2012–Nov.–06	2.617	1.675	8.48	18.02	1.03	HD 12846
109640	2010–Aug.–12	1.899	1.327	30.53	17.32	1.16	BD+45 411
112876	2011–Sep.–27	2.285	1.375	13.62	18.29	1.19	HD 197759
136038	2011–Sep–27	2.038	1.116	15.06	17.63	1.25	HD 197759
153652	2011–Jan.–05	2.202	1.287	12.32	16.77	1.08	BD+41 309

Notes. r_h and Δ are the heliocentric and geocentric distances, respectively, Φ is the solar phase angle, and V is the estimated visual magnitude. ^(*)The spectrum of (5690) 1992 EU is taken from IRTF Legacy Archive dated 2009–10–18 and observed by Thomas, C.

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