699 Hela

699 Hela is a Mars crossing asteroid. It was discovered on 5 June 1910 at Heidelberg by German astronomer Joseph Helffrich, and may have been named after Hel, the Norse ruler of the underworld. This asteroid is orbiting the Sun at a distance of $2.61 AU$ with a period of 1542.1 days and an eccentricity of 0.41. The orbital plane is inclined at an angle of 15.3° to the plane of the ecliptic.

With an absolute magnitude of 11.7, the asteroid is about 12–27 km in diameter. It is classified as a stony Sk or Sq-type asteroid in the SMASS taxonomy. Photometry data used to produce light curves provide a rotation period of $3.396 hours$. The lightcurve inversion method was used to build a shape model with a rounded form and an equatorial bulge.