သီးဘီ (ဂြိုဟ်ရံလ): တည်းဖြတ်မှု မူကွဲများ

| surface_grav = {{val|0.013|u=m/s²}} (0.004 ''g''){{sfn|Thomas Burns et al.|1998}}{{efn|The estimate from [[#{{sfnRef|Thomas Burns et al.|1998}}|Thomas, 1998]] was divided by 1.5 to account for the difference in assumed densities.}}

| escape_velocity = 20–30m/s{{sfn|Burns Simonelli et al.|2004}}{{efn|The estimate from [[#{{sfnRef|Burns Simonelli et al.|2004}}|Burns, 2004]] was divided by 1.5 to account for the difference in assumed densities.}}

| axial_tilt = zero

| albedo = {{val|0.047|0.003}}{{sfn|Simonelli Rossier et al.|2000}}