| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 17 October 1930 |
| Designations | |
| (1174) Marmara | |
Named after | Sea of Marmara (Bosporus/Dardanelles)[2] |
| 1930 UC | |
| main-belt · (outer) · Eos[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.72 yr (31,673 days) |
| Aphelion | 3.3607AU |
| Perihelion | 2.6956 AU |
| 3.0281 AU | |
| Eccentricity | 0.1098 |
| 5.27yr (1,925 days) | |
| 227.47° | |
| 0° 11m 13.2s / day | |
| Inclination | 10.074° |
| 1.0132° | |
| 351.99° | |
| Physical characteristics | |
| Dimensions | 16.21±1.6 km[5] 16.46 km(derived)[3] 17.01±3.92 km[6] 17.18±1.10 km[7] 17.77±4.33 km[8] 18.142±0.159 km[9] 18.496±0.180 km[10] |
| 12h[11] | |
| 0.0821±0.0063[10] 0.086±0.025[9] 0.095±0.013[7] 0.1065±0.025[5] 0.13±0.11[8] 0.15±0.12[6] 0.1795(derived)[3] | |
| S[3] | |
| 11.40[3][8] · 11.49[6] · 11.5[1] · 11.73±0.27[12] · 12.0[5][7][10] | |
1174 Marmara, provisional designation1930 UC, is a stony Eoanasteroid from the outer regions of theasteroid belt, approximately 17 kilometers in diameter. It was discovered on 17 October 1930, by German astronomerKarl Reinmuth atHeidelberg Observatory in southwest Germany.[13] The asteroid was later named after theSea of Marmara, located between Europe and Asia.[2]
Marmara belongs to theEos family (606), the largestasteroid family of theouter main-belt consisting of nearly 10,000 known members.[3][4][14]: 23
It orbits the Sun at a distance of 2.7–3.4 AU once every 5 years and 3 months (1,925 days). Its orbit has aneccentricity of 0.11 and aninclination of 10° with respect to theecliptic.[1] The asteroid'sobservation arc begins with its official discovery observation at Heidelberg.[13]
Marmara is an assumedS-type asteroid,[3] while Eoan asteroids are typically characterized asK-type asteroids.[14]: 23
Published in 2004, a rotationallightcurve ofMarmara was obtained from photometric observations by South American astronomers from Brazil and Argentina. Lightcurve analysis gave arotation period of 12 hours with a brightness amplitude of 0.2magnitude (U=2).[11]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Marmara measures between 16.21 and 18.496 kilometers in diameter and its surface has analbedo between 0.0821 and 0.15.[5][6][7][8][9][10] TheCollaborative Asteroid Lightcurve Link derives a higher albedo of 0.1795 and a diameter of 16.46 kilometers based on anabsolute magnitude of 11.4.[3]
Thisminor planet was named by the discoverer after theSea of Marmara, which lies in between the Black Sea and the Aegean Sea, connected by the Bosporus and the Dardanelles straits, respectively.[2] The official naming citation was published inPaul Herget'sThe Names of the Minor Planets in 1955 (H 109).[2]
