司纺星

**154 Bertha**
Orbital characteristics ^{1^{[失效連結]}}
Orbit type	Main belt
Semimajor axis	3.189 天文单位
Perihelion distance	2.920 天文单位
Aphelion distance	3.459 天文单位
Orbital period	5.70 years
Inclination	21.03°
Eccentricity	0.084
Physical characteristics ^{1^{[失效連結]}}
Diameter	184.93 km
Rotation period	12 hours
Spectral class	C
Abs. magnitude	7.58
Albedo ⁴	0.048
History ^{2（页面存档备份，存于互联网档案馆）}
Discoverer	P. M. Henry, 1875