| Minorplanet: | yes |
| 14789 GAISh | |
| Background: |
|
| Discovered: | 8 October 1969 |
| Mpc Name: | (14789) GAISH |
| Alt Names: | |
| Named After: | Sternberg Astronomical Institute (GAISh) |
| Epoch: | 23 March 2018 (JD 2458200.5) |
| Uncertainty: | 0 |
| Observation Arc: | 47.65 yr (17,405 d) |
| Perihelion: | 2.8333 AU |
| Semimajor: | 3.1227 AU |
| Eccentricity: | 0.0927 |
| Period: | 5.52 yr (2,016 d) |
| Mean Motion: | / day |
| Inclination: | 5.8175° |
| Asc Node: | 200.22° |
| Arg Peri: | 161.64° |
| Mean Diameter: | |
| Albedo: | |
| Abs Magnitude: | 12.5 12.8 13.44 |
14789 GAISh, provisional designation, is a dark background asteroid from the outer regions of the asteroid belt, approximately 15km (09miles) in diameter. It was discovered on 8 October 1969, by Soviet astronomer Lyudmila Chernykh of the Crimean Astrophysical Observatory at Nauchnij, on the Crimean peninsula. The assumed C-type asteroid has a rotation period of 8.1 hours and possibly an elongated shape. It was named for the Russian Sternberg Astronomical Institute (GAISh) of Moscow State University.
GAISh is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.8–3.4 AU once every 5 years and 6 months (2,016 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.09 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins with its official discovery observation in October 1969.
GAISh is an assumed carbonaceous C-type asteroid.
In October 2010, a rotational lightcurve of GAISh was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 8.086 hours with a high brightness amplitude of 0.82 magnitude, indicative of a non-spherical shape .
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, GAISh measures 15.256 kilometers in diameter and its surface has an albedo of 0.076. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 11.42 kilometers based on an absolute magnitude of 13.44.
This minor planet was named after the Sternberg Astronomical Institute (GAISh, ГАИШ), a division of Moscow State University. Founded in 1931, it is one of Russia's leading astronomical institute and a principal educational facility for professional astronomers. The institute is located on the site of the 1931-built Sternberg Observatory. The official naming citation was published by the Minor Planet Center on 6 January 2007 .