| Discovery[1] | |
|---|---|
| Discovered by | Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 14 September 1955 |
| Designations | |
| (1826) Miller | |
Named after | John A. Miller(entrepreneur)[2] |
| 1955 RC1 · 1929 RV 1940 WF · 1950 TD2 1952 BL1 · 1962 AA 1971 TU2 | |
| main-belt · (outer) Eos[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 75.74 yr (27,665 days) |
| Aphelion | 3.2492AU |
| Perihelion | 2.7420 AU |
| 2.9956 AU | |
| Eccentricity | 0.0847 |
| 5.18yr (1,894 days) | |
| 272.27° | |
| 0° 11m 24.36s / day | |
| Inclination | 9.2276° |
| 274.23° | |
| 163.29° | |
| Physical characteristics | |
| Dimensions | 19.746±0.075 km[5] 23.099±0.190[6] 24.31 km(derived)[3] 24.41±1.9 km[7] 26.34±0.95 km[8] |
| 6.77±0.01h(dated)[9] 30.049±0.001 h[10] | |
| 0.1085(derived)[3] 0.111±0.009[8] 0.1294±0.022[7] 0.176±0.025[6] 0.1964±0.0311[5] | |
| S(assumed)[3] | |
| 10.90[5][7][8] · 11.1[1][3] | |
1826 Miller, provisional designation1955 RC1, is a stony Eoanasteroid from the outer region of theasteroid belt, approximately 24 kilometers in diameter.
It was discovered on 14 September 1955, by theIndiana Asteroid Program atGoethe Link Observatory near Brooklyn, Indiana, United States, and named after American entrepreneurJohn Miller.[2][11]
Miller is a member of theEos family (606), the largestasteroid family in theouter main belt consisting of nearly 10,000 asteroids.[4][12]: 23
The asteroid orbits the Sun in theouter main-belt at a distance of 2.7–3.2 AU once every 5 years and 2 months (1,894 days). Its orbit has aneccentricity of 0.08 and aninclination of 9° with respect to theecliptic.[1] First identified as1929 RV atSimeis Observatory,Miller's first used observation was its identification as1940 WF atTurku in 1940, which extends itsobservation arc by 15 years prior to its official discovery observation.[11]
Miller is an assumed stonyS-type asteroid.[3]
In March 2010, a rotationallightcurve ofMiller was obtained from photometric observation taken at Oakley Southern Sky Observatory in Australia. It gave a longer-than averagerotation period of 30.049 hours with a brightness variation of 0.08magnitude (U=2),[10] superseding a previous result of 6.77 hours by amateur astronomerRené Roy, who derived it from a fragmentary lightcurve obtained in December 2002 (U=1).[9]
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,Miller measures between 19.74 and 26.34 kilometers in diameter, and its surface has analbedo between 0.111 and 0.196.[5][6][7][8] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.1085 and a diameter of 24.31 kilometers with anabsolute magnitude of 11.1.[3] The asteroid was also involved in theasteroid occultation of a 10th magnitude star in the constellation Cancer in April 2004.[citation needed]
It was named in honor of American entrepreneurJohn A. Miller (1872–1941), founder of the Astronomy Department atIndiana University and first director of theKirkwood Observatory, which he built and named for his former teacher. He also built theSproul Observatory at Swarthmore College in the U.S state of Pennsylvania(also see1578 Kirkwood).[2] The officialnaming citation was published by theMinor Planet Center on 15 October 1977 (M.P.C. 4236).[13]
