|Discovered by||John Russell Hind|
|Discovery date||August 22, 1852|
|Other names||A902 UG|
|Reference date October 22, 2004 (JD 2453300.5)|
|Longest distance from the Sun||423.443 Gm (2.831 AU)|
|Shortest distance from the Sun||307.028 Gm (2.052 AU)|
|Longest distance from the center of its orbital path
|365.235 Gm (2.441 AU)|
|How long it takes to complete an orbit||1393.378 d (3.81 a)|
|Average speed||18.94 km/s|
|Angle above the reference plane
|Size and other qualities|
|Average density||2.0? g/cm³|
|Surface gravity||~0.0629 m/s²|
|Escape velocity||~0.1190 km/s|
|Rotation period||0.3101 d (7.445 h)|
|How much light it reflects||0.037|
|Avg. surface temp.||~180 K|
|8.88 to 12.95|
19 Fortuna is one of the biggest main belt asteroids. It is made up of stuff similar to 1 Ceres: a darkly colored surface that is heavily space weathered and made up of primitive organic compounds, including tholins.
The Hubble Space Telescope saw Fortuna in 1993. It was resolved with an apparent diameter of 0.20 arcseconds (4.5 pixels in the Planetary Camera) and its shape was found to be nearly spherical. Moons were searched for but none were detected.
References[change | change source]
- "Imaging Observations of Asteroids with Hubble Space Telescope" (PDF). Retrieved 2005-01-15.
- "A closer look at main belt asteroids 1: WF/PC images (Icarus 173)" (PDF). Retrieved 2007-09-23.