| Discovery[1] | |
|---|---|
| Discovered by | L. V. Zhuravleva |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 22 August 1974 |
| Designations | |
| (2173) Maresjev | |
Named after | Alexey Maresyev[1] (Soviet war veteran) |
| 1974 QG1 · 1933 FN 1938 DD2 · 1963 SW 1968 OM · 1974 RZ1 1974 TG | |
| main-belt[1][2] · (outer)[3] background[4] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.52yr (30,871 d) |
| Aphelion | 3.4978AU |
| Perihelion | 2.7790 AU |
| 3.1384 AU | |
| Eccentricity | 0.1145 |
| 5.56 yr (2,031 d) | |
| 313.24° | |
| 0° 10m 38.28s / day | |
| Inclination | 14.424° |
| 174.66° | |
| 166.31° | |
| Physical characteristics | |
| 20.61±6.86 km[5] 27.90±0.61 km[6] 28.324±0.226 km[7] 28.96 km(calculated)[3] 29.265±0.242 km[8] | |
| 11.6±0.1 h[9] | |
| 0.0568±0.0138[8] 0.0580(assumed)[3] 0.061±0.010[7] 0.068±0.004[6] 0.11±0.05[5] | |
| C(assumed)[3] | |
| 11.30[5] · 11.40[2][3][6][8] | |
2173 Maresjev, provisional designation1974 QG1, is a dark backgroundasteroid from the outer regions of theasteroid belt, approximately 28 kilometers (17 miles) in diameter. It was discovered on 22 August 1974, by Soviet–Ukrainian astronomerLyudmila Zhuravleva at theCrimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula.[1] It was named for Soviet war veteranAlexey Maresyev. The assumedC-type asteroid has a tentativerotation period of 11.6 hours.[3]
Maresjev is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theouter asteroid belt at a distance of 2.8–3.5 AU once every 5 years and 7 months (2,031 days;semi-major axis of 3.14 AU). Its orbit has aneccentricity of 0.11 and aninclination of 14° with respect to theecliptic.[2]
The body'sobservation arc begins with its first observations as1933 FN atHeidelberg Observatory in March 1933, or 41 years prior to its official discovery observation at Nauchnij.[1]
Maresjev is an assumed carbonaceousC-type asteroid.[3]
In September 2007, a fragmentary rotationallightcurve ofMaresjev was obtained fromphotometric observations by astronomers at theOakley Observatory in the United States. Lightcurve analysis gave arotation period of 11.6 hours with a brightness amplitude of 0.42magnitude (U=1).[9] As of 2018, no secure period has been obtained.[3]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Maresjev measures between 20.61 and 29.265 kilometers in diameter and its surface has analbedo between 0.0568 and 0.11.[5][6][7][8]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.0580 and calculates a diameter of 28.96 kilometers based on anabsolute magnitude of 11.4.[3]
Thisminor planet was named afterAlexey Maresyev (1916–2001), a Soviet war veteran andfighter ace. His story served as a basis for the novelStory about a True Man (also translated asStory of a Real Man) byBoris Polevoy, which became a popular Russian book that was eventually made into an opera. It was first published in English in 1952, and was reprinted in 1970.[1][10]
The official naming citation was published by theMinor Planet Center on 1 April 1980 (M.P.C. 5285).[11]
