It has a noticeably elongated (ratio of axes ~ 3:1) shape with a half-light radius of about 350 pc.

[3] However, other studies failed to find a velocity gradient or an associated stellar stream, suggesting that it is not being tidally disrupted.

[6][note 3] The stellar population of Her consists mainly of old stars formed more than 12 billion years ago.

[3] The metallicity of these old stars is also very low at [Fe/H] ≈ −2.58 ± 0.51,[note 4] which means that they contain 400 times less heavy elements than the Sun.

[3] Measurements have so far failed to detect neutral hydrogen in it—the upper limit is 466 solar masses.