| Discovery[1] | |
|---|---|
| Discovered by | M. Koishikawa |
| Discovery site | Ayashi Station (391) (Sendai Astronomical Observatory) |
| Discovery date | 8 February 1995 |
| Designations | |
| (6349) Acapulco | |
Named after | Acapulco(Mexicansister city)[2] |
| 1995 CN1 · 1947 EC 1973 AH4 · 1973 CL 1988 SA1 | |
| main-belt · (middle)[3] Adeona[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 70.23 yr (25,651 days) |
| Aphelion | 3.0392AU |
| Perihelion | 2.2937 AU |
| 2.6664 AU | |
| Eccentricity | 0.1398 |
| 4.35yr (1,590 days) | |
| 23.621° | |
| 0° 13m 35.04s / day | |
| Inclination | 10.787° |
| 328.10° | |
| 236.48° | |
| Physical characteristics | |
| Dimensions | 12.35 km(calculated)[3] 14.66±3.43 km[5] 19.24±1.2 km(IRAS:5)[6] 20.429±0.206 km[7][8] 22.54±0.69 km[9] 22.69±0.56 km[10] 23.02±8.65 km[11] |
| 4.3755±0.0020h[12] | |
| 0.0377±0.0066[7] 0.04±0.03[11] 0.045±0.005[10][8] 0.057±0.004[9] 0.0757±0.010(IRAS:5)[6] 0.10(assumed)[3] 0.10±0.08[5] | |
| S[3] | |
| 12.00[9] · 12.18±0.54[13] · 12.2[7][10] · 12.209±0.001(R)[12] · 12.3[1][5] · 12.53[11] · 12.66[3] | |
6349 Acapulco, provisional designation1995 CN1, is a dark Adeonianasteroid from the middle region of theasteroid belt, approximately 22 kilometers in diameter.
The asteroid was discovered on 8 February 1995, by Japanese astronomerMasahiro Koishikawa at the Ayashi Station (391) of theSendai Astronomical Observatory in the Tōhoku region of Japan.[14] It was named for the Mexican city ofAcapulco.[2]
Acapulco is a member of theAdeona family (505), a largefamily of carbonaceous asteroids.[4] It orbits the Sun in thecentral main-belt at a distance of 2.3–3.0 AU once every 4 years and 4 months (1,590 days). Its orbit has aneccentricity of 0.14 and aninclination of 11° with respect to theecliptic.[1]
In March 1947, it was first identified as1947 EC atYerkes Observatory. The body'sobservation arc begins 42 years prior to its official discovery observation at Ayashi, with aprecovery taken atPalomar Observatory in 1953.[14]
A rotationallightcurve ofAcapulco was obtained from photometric observations made at thePalomar Transient Factory in September 2010. Lightcurve analysis gave arotation period of4.3755 hours with a brightness variation of 0.18magnitude (U=2).[12]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Acapulco measures between 14.66 and 23.02 kilometers in diameter, and its surface has analbedo in the range of 0.037 to 0.10.[5][6][7][9][10][11]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a smaller diameter of 12.35 kilometers with anabsolute magnitude of 12.66.[3]
Thisminor planet was named for the Mexican city ofAcapulco, known for its major seaport, which is considered to be among the most beautiful ones in the world.[2]
Since 1973, Acapulco is thesister city of the Japanese city ofSendai, where the discovering observatory is located, and after which the minor planet3133 Sendai is named.Hasekura Tsunenaga (1571–1622) – retainer ofDate Masamune, who founded the city of Sendai – stopped by at Acapulco on his diplomatic mission to Rome.[2] The official naming citation was published by theMinor Planet Center on 2 February 1999(M.P.C. 33787).[15]
