Table 1
Observational circumstances of the observations.
| Object | Date | r | δ | α | Exp. time (s) |
|
|
|||||
| (222) Lucia | 2008-Dec.-09 | 3.503 | 3.26 | 16.83 | 365.7–37.7 |
| (223) Rosa | 2008-Sep.-10 | 3.437 | 2.896 | –15.86 | 88.1–37.7 |
| (316) Goberta | 2008-Sep.-11 | 3.628 | 3.256 | –15.97 | 365.7–37.7 |
| (383) Janina | 2008-Nov.-28 | 2.933 | 2.41 | –18.96 | 88.1–37.7 |
| (468) Lina | 2008-Jul.-10 | 3.625 | 3.053 | –14.51 | 117.4–37.7 |
| (492) Gismonda | 2008-Dec.-15 | 3.518 | 3.49 | 16.69 | 365.7–37.7 |
| (515) Athalia | 2009-Jan.-08 | 2.66 | 2.013 | 19.38 | 37.7–37.7 |
| (526) Jena | 2009-Mar.-04 | 2.876 | 2.833 | 20.25 | 88.1–37.7 |
Notes. r is the heliocentric distance in AU, δ is the asteroid – Spitzer distance in AU, alpha is the phase angle in degrees (Sun – asteroid – Spitzer, a negative phase angle indicates that the observation occurred before opposition), and exp.time is the total “on object” exposure time in the SL2 and SL1 modes respectively.
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