116 Sirona Explained

Minorplanet:yes
Background:
  1. D6D6D6
116 Sirona
Discovered:8 September 1871
Mpc Name:(116) Sirona
Alt Names:A871 RA; ;
;
Epoch:31 July 2016 (JD 2457600.5)
Semimajor:2.76741AU
Perihelion:2.37322AU
Aphelion:3.1616abbr=onNaNabbr=on
Eccentricity:0.14244
Period:4.60 yr (1681.5 d)
Inclination:3.5635°
Asc Node:63.724°
Arg Peri:94.932°
Avg Speed:17.81 km/s
Mass:3.9 kg
Surface Grav:0.0200 m/s2
Escape Velocity:0.0379 km/s
Rotation:12.028abbr=onNaNabbr=on
Abs Magnitude:7.82
Mean Motion: / day
Observation Arc:143.31 yr (52345 d)
Uncertainty:0
Moid:1.38451AU
Jupiter Moid:1.83156AU
Tisserand:3.321

116 Sirona is a somewhat large and bright-colored main-belt asteroid that was discovered by the German-American astronomer C. H. F. Peters on September 8, 1871, and named after Sirona, the Celtic goddess of healing.

This body is orbiting the Sun with a period of 4.60 years and an eccentricity (ovalness) of 0.14. The orbital plane is inclined by 3.56° to the plane of the ecliptic. The cross-section diameter of this object is ~72 km. Photometric observations of this asteroid gave a light curve with a period of 12.028 hours and a brightness variation of 0.42 in magnitude. It has the spectrum of an S-type asteroid, suggesting a siliceous composition.