Table 2
Polarimetric parameters and other characteristics of M/X-type asteroids.
| Asteroid(1) | Type (Tholen/Bus-DeMeo) | pv(Akari) | pv(WISE) | |Pmin| | αinv | NIR slope(2) |
|---|---|---|---|---|---|---|
| (16) Psyche | M/Xk | 0.19 ± 0.08 | – | 1.06 ± 0.05 | 22.3 ± 0.6 | 0.17 ± 0.07 |
| (21) Lutetia | M/Xc | 0.15 ± 0.03 | – | 1.32 ± 0.07 | 25.0 ± 0.4 | −0.03 ± 0.02 |
| (22) Kalliope | M/X | 0.22 ± 0.04 | 0.17 ± 0.01 | 0.97 ± 0.07 | 21.0 ± 1.0 | 0.16 ± 0.02 |
| (55) Pandora | M/Xk | 0.33 ± 0.07 | – | 0.97 ± 0.06 | 20.6 ± 0.8 | 0.15 ± 0.05 |
| (69) Hesperia | M/Xk | 0.12 ± 0.03 | – | 0.85 ± 0.10 | 20.5 ± 0.8 | 0.12 ± 0.04 |
| (75) Eurydike | M/Xk | 0.11 ± 0.02 | 0.12 ± 0.03 | – | 20.1 ± 0.8 | – |
| (77) Frigga | MU/Xe | 0.13 ± 0.03 | 0.23 ± 0.03 | 1.30 ± 0.15 | 22.0 ± 0.5 | 0.07 ± 0.03 |
| (92) Undina | X/Xk | 0.25 ± 0.05 | – | 0.80 ± 0.15 | – | – |
| (97) Klotho | M/Xc | 0.18 ± 0.04 | 0.25 ± 0.04 | 1.35 ± 0.15 | 22.6 ± 0.9 | −0.03 ± 0.03 |
| (110) Lydia | M/Xk | 0.18 ± 0.04 | 0.17 ± 0.02 | 0.90 ± 0.10 | – | 0.13 ± 0.03 |
| (125) Liberatrix | M/X | 0.29 ± 0.06 | 0.18 ± 0.04 | 0.85 ± 0.15 | 20.4 ± 0.9 | 0.20 ± 0.06 |
| (l29) Antigone | M/X | 0.17 ± 0.03 | 0.15 ± 0.06 | 0.90 ± 0.10 | 21.4± 0.6 | 0.18 ± 0.05 |
| (132) Aethra | M/Xe | 0.17 ± 0.03 | – | 1.10 ± 0.15 | 19.5 ± 0.5 | – |
| (135) Hertha | M/Xk | 0.17 ± 0.03 | 0.18 ± 0.03 | 0.95 ± 0.10 | 21.6 ± 0.8 | 0.13 ± 0.03 |
| (161) Athor | M/Xc | 0.23 ± 0.05 | – | – | 18.9 ± 1.0 | – |
| (184) Dejopeja | X/X | 0.17 ± 0.03 | 0.22 ± 0.02 | 1.00 ± 0.10 | – | 0.17 ± 0.05 |
| (201) Penelope | M/Xk | 0.19 ± 0.04 | 0.10 ± 0.03 | – | 20.9 ± 0.8 | – |
| (216) Kleopatra | M/Xe | 0.17 ± 0.03 | 0.15 ± 0.03 | 1.00 ± 0.10 | 21.2 ± 1.0 | 0.16 ± 0.02 |
| (224) Oceana | M/X,T(3) | 0.19 ± 0.04 | 0.24 ± 0.05 | 1.20 ± 0.15 | – | 0.05 ± 0.01 |
| (250) Bettina | M/Xk | 0.14 ± 0.03 | 0.11 ± 0.02 | 0.90 ± 0.12 | 22.0 ± 0.9 | 0.21 ± 0.02 |
| (325) Heidelberga | M/− | 0.10 ± 0.02 | – | 0.95 ± 0.15 | – | 0.17 ± 0.05 |
| (337) Devosa | X/Xk | 0.12 ± 0.02 | – | 1.15 ± 0.12 | – | 0.12 ± 0.03 |
| (338) Budrosa | M/Xk | 0.14 ± 0.03 | 0.28 ± 0.05 | 0.98 ± 0.10 | – | 0.12 ± 0.01 |
| (347) Pariana | M/– | 0.17 ± 0.03 | 0.22 ± 0.05 | 0.95 ± 0.15 | 22.2 ± 0.8 | 0.18 ± 0.03 |
| (359) Georgia | CXM/Xk | 0.13 ± 0.03 | – | – | 20.8 ± 0.6 | – |
| (369) Aeria | M/− | 0.15 ± 0.03 | 0.17 ± 0.04 | 0.95 ± 0.10 | 21.1 ± 0.9 | 0.19 ± 0.08 |
| (382) Dodona | M/– | 0.19 ± 0.04 | 0.13 ± 0.02 | 1.03 ± 0.10 | – | 0.14 ± 0.03 |
| (441) Bathilde | M/Xk | 0.16 ± 0.03 | 0.20 ± 0.01 | 1.40 ± 0.10 | 22.8 ± 1.0 | 0.04 ± 0.03 |
| (504) Cora | −/X | 0.21 ± 0.04 | 0.34 ± 0.05 | 1.00 ± 0.10 | – | – |
| (558) Carmen | M/Xk(3) | 0.14 ± 0.03 | 0.13 ± 0.04 | 0.80 ± 0.06 | – | 0.20 ± 0.09 |
| (678) Fredegundis | −/X | 0.19 ± 0.04 | 0.34 ± 0.06 | 0.90 ± 0.08 | 20.6 ± 1.0 | 0.12 ± 0.02 |
| (741) Botolphia | X/X | 0.20 ± 0.04 | – | 1.15 ± 0.10 | – | – |
| (755) Quintilla | M/− | 0.22 ± 0.09 | 0.12 ± 0.01 | 1.15 ± 0.10 | – | 0.04 ± 0.08 |
| (757) Portlandia | XF/Xk | 0.13 ± 0.03 | 0.22 ± 0.03 | 1.00 ± 0.20 | 16.6 ± 0.7 | 0.05 ± 0.03 |
| (758) Mancunia | X/− | 0.11 ± 0.02 | 0.12 ± 0.02 | 1.25 ± 0.10 | – | 0.08 ± 0.03 |
| (779) Nina | −/X | 0.14 ± 0.03 | 0.16 ± 0.02 | 1.00 ± 0.10 | – | – |
| (785) Zwetana | M/Cb | 0.13 ± 0.03 | – | 1.88 ± 0.20 | 24.0 ± 0.6 | 0.21 ± 0.02 |
| (796) Sarita | XD/X | 0.23 ± 0.05 | 0.21 ± 0.03 | 1.00 ± 0.10 | 21.0 ± 1.0 | 0.20 ± 0.08 |
| (849) Ara | M/− | 0.30 ± 0.06 | 0.13 ± 0.04 | 0.95 ± 0.10 | – | 0.21 ± 0.08 |
| (872) Holda | M/X | 0.17 ± 0.03 | 0.24 ± 0.03 | 1.13 ± 0.10 | – | 0.13 ± 0.02 |
| (1222) Tina | −/X | 0.09 ± 0.02 | 0.20 ± 0.05 | – | ~20 | – |
Notes. (1)Asteroids observed in the present work are marked in bold. (2)The spectral slope in the 1.7–2.4 µm wavelength range calculated using the published data by Clark et al. (2004); Fornasier et al. (2010), Ockert-Bell et al. (2008; 2010); Hardersen et al. (2011); and Neeley et al. (2014). (3)Type from Lazzaro et al. (2004).
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