| Discovery[1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 8 November 1980 |
| Designations | |
| (2648) Owa | |
Named after | "rock" inHopi[2] |
| 1980 VJ · 1926 VD 1953 TJ | |
| main-belt[1][3] · (inner) Flora[4] · background[5][6] | |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.29yr (33,345 d) |
| Aphelion | 2.6438AU |
| Perihelion | 1.8565 AU |
| 2.2502 AU | |
| Eccentricity | 0.1749 |
| 3.38 yr (1,233 d) | |
| 12.319° | |
| 0° 17m 31.2s / day | |
| Inclination | 4.7966° |
| 279.91° | |
| 131.33° | |
| Physical characteristics | |
| 5.40±0.25 km[7] 5.76±0.91 km[8] 5.933±0.160 km[9][10] 6.81 km(calculated)[4] | |
| 3.56±0.01 h[11] 3.563±0.002 h[a] 3.563 h[12] 3.5641±0.0001 h[b][c] 3.567±0.002 h[13] | |
| 0.24(assumed)[4] 0.38±0.17[8] 0.4174±0.0904[10] 0.459±0.029[7] | |
| S(assumed)[4] | |
| 12.7[10] · 12.80[7] 12.88±0.32[14] 12.90[8] · 13.0[3][4] | |
2648 Owa, provisional designation1980 VJ, is a backgroundasteroid from the Flora region of the innerasteroid belt, approximately 6 kilometers (4 miles) in diameter. It was discovered on 8 November 1980, by American astronomerEdward Bowell at theAnderson Mesa Station near Flagstaff, Arizona, in the United States.[1] The presumablyS-type asteroid has arotation period of 3.56 hours.[4] It was named for the word "rock" in the Native AmericanHopi language.[2]
Owa is a non-family asteroid of the main belt'sbackground population when applying thehierarchical clustering method to itsproper orbital elements.[5][6] Based on osculating Keplerianorbital elements, the asteroid has also been classified as a member of theFlora family (402), a giantasteroid family and the largest family of stony asteroids in the main-belt.[4]
It orbits the Sun in theinner main-belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,233 days;semi-major axis of 2.25 AU). Its orbit has aneccentricity of 0.17 and aninclination of 5° with respect to theecliptic.[3] The asteroid was first observed as1926 VD atHeidelberg Observatory in November 1926. The body'sobservation arc begins atTurku Observatory in October 1953, more than 27 years prior to its official discovery observation at Anderson Mesa.[1]
Owa is an assumed, stonyS-type asteroid.[4]
In 2007, four rotationallightcurves ofOwa were obtained from photometric observations by James W. Brinsfield at Via Capote Observatory (G69),[11] by astronomers at theNational Undergraduate Research Observatory (NURO),[12] as well as byPetr Pravec andPierre Antonini (U=3-/3-/3/3).[13][b] In 2012, another lightcurve was obtained byDavid Higgins (U=3).[a] The consolidated result gave arotation period of 3.5641 hours with a brightness amplitude between 0.20 and 0.35magnitude (U=3).[4][c]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Owa measures between 5.40 and 5.933 kilometers in diameter and its surface has analbedo between 0.38 and 0.459.[7][8][9][10]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from8 Flora, the parent body of the Flora family – and calculates a diameter of 6.81 kilometers based on anabsolute magnitude of 13.0.[4]
Thisminor planet was named after theHopi word for "rock". The Hopi are a Native American tribe, who primarily live on theHopi Reservation in northern Arizona. The asteroid's name was suggested by German-American linguistEkkehart Malotki.[2] The official naming citation was published by theMinor Planet Center on 1 December 1982 (M.P.C. 7473).[15]
