The (dynamical, astrometrical) method for computing the mass is based on the analysis of orbital perturbations during close encounters between the massive asteroid (perturber) and (several) smaller minor planets (test asteroids / bodies). Below some results derived by me. The SiMDA project is dedicated to asteroid masses and densities.
| Object | Test asteroid(s) | Mass (Solar Mass | kg) | Reference | Note |
|---|---|---|---|---|
| (11) Parthenope | (089149) 2001 UD34 | (2.5 ± 0.5) E-12 | (5.0 ± 1.0) E18 | Kretlow 2015 | 2 |
| (16) Psyche | (13206) 1997 GC22 | (2.5 ± 0.2) E-11 | (5.0 ± 0.4) E19 | Kretlow 2005 | |
| (29) Amphitrite | (987) Wallia + (6904) McGill | (5.9 ± 0.6) E-12 | (1.2 ± 0.2) E19 | Kretlow 2005 | |
| (29) Amphitrite | (6904) McGill | (7.4 ± 0.5) E-12 | (1.5 ± 0.1) E19 | Kretlow 2013 | 1 |
| (76) Freia | (83565) 2001 SS213 | (4.7 ± 1.4) E-12 | (9.4 ± 2.8) E18 | Kretlow 2015 | 2 |
| (121) Hermione | (278) Paulina + (5750) Kandatai | (3.3 ± 1.1) E-12 | (6.6 ± 2.2) E18 | Kretlow 2005 | |
| (121) Hermione | (278) Paulina + (5750) Kandatai | (2.4 ± 0.4) E-12 | (4.8 ± 0.8) E18 | Kretlow 2014 | 1 |
| (223) Rosa | (35525) 1998 FV64 + (315162) 2007 FL24 | (1.8 ± 0.6) E-13 | (3.6 ± 1.3) E17 | Kretlow 2022 | |
| (476) Hedwig | (187901) 2000 SB317 | (6.2 ± 2.7) E-13 | (1.2 ± 0.5) E18 | Kretlow 2014 | |
| (804) Hispania | (1002) Olbersia | (2.2 ± 0.9) E-12 | (4.4 ± 1.8) E18 | Kretlow 2005 |
1: Recalculation using more observations and extended arc span.
2: (Re)calculation with observation debiasing (Chesley et al. (2010)).