| Discovery [1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Lowell Obs. |
| Discovery date | 11 January 1986 |
| Designations | |
| (5806) Archieroy | |
Named after | Archie Roy (astrophysicist)[2] |
| 1986 AG1 · 1987 QQ9 | |
| main-belt · (inner) [1] Hungaria [3][4] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.83 yr (22,948 days) |
| Aphelion | 2.0347AU |
| Perihelion | 1.8908 AU |
| 1.9628 AU | |
| Eccentricity | 0.0367 |
| 2.75yr (1,004 days) | |
| 257.13° | |
| 0° 21m 30.24s / day | |
| Inclination | 20.816° |
| 300.87° | |
| 97.285° | |
| Physical characteristics | |
| Dimensions | 5.75±1.02 km[5] 6.34±1.34 km[6] 6.38 km(calculated)[4] 6.785±0.224 km[7] |
| 12.16±0.01h[8] 12.1602±0.0005 h[9] 12.163±0.001 h[10] 12.187±0.003 h[11] | |
| 0.19±0.10[6] 0.291±0.063[7] 0.3(assumed)[4] 0.37±0.18[5] | |
| E [4] · V [12] | |
| 12.80[7] · 12.9[1][4][5] · 13.53[6] | |
5806 Archieroy, provisional designation1986 AG1, is a stony Hungariaasteroid from the inner regions of theasteroid belt, approximately 6 kilometers in diameter. It was discovered on 11 January 1986, by American astronomerEdward Bowell at Lowell'sAnderson Mesa Station near Flagstaff, Arizona.[3] It is named after Scottish astrophysicistArchie Roy.[2]
The brightE-type asteroid, alternatively classified as aV-type, is a member of theHungaria family, which form the innermost dense concentration of asteroids in theSolar System. It orbits the Sun in theinner main-belt at a distance of 1.9–2.0 AU once every 2 years and 9 months (1,004 days). Its orbit has aneccentricity of 0.04 and aninclination of 21° with respect to theecliptic.[1] A firstprecovery was taken atPalomar Observatory in 1954, extending the asteroid'sobservation arc by 32 years prior to its official discovery observation at Anderson Mesa.[3]
Between 2004 and 2015, several rotationallightcurves ofArchieroy have been obtained from photometric observations by American astronomersBrian Warner at his Palmer Divide Observatory, Colorado, andRobert Stephens at the Center for Solar System Studies, California. Lightcurve analysis[a] gave a well-definedrotation period between 12.16 and 12.187 hours with a high brightness variation of 0.34 to 0.47magnitude (U=3-/3/3/3).[8][9][10][11]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Archieroy measures between 5.75 and 6.78 kilometers in diameter, and its surface has analbedo between 0.19 and 0.37,[5][6][7] while theCollaborative Asteroid Lightcurve Link assumes an albedo of 0.30 – a compromise value between 0.4 and 0.2, corresponding to the Hungaria asteroids both as family and orbital group – and calculates a diameter of 6.38 kilometers, with anabsolute magnitude of 12.9.[4]
Thisminor planet was named after Scottish astrophysicist and celestial mechanicianArchie Roy (1924–2012), who was a Fellow of theRoyal Society of Edinburgh, theRoyal Astronomical Society, and theBritish Interplanetary Society, as well as the president of theSociety for Psychical Research and professor atGlasgow University. His research included the restricted and generalthree-body problems, high-order Taylor series and the long-term stability of and theorbital resonances in the Solar System. He has also authored and published several textbooks and novels.[2] The approved naming citation was published by theMinor Planet Center on 19 October 1994 (M.P.C. 24123).[13]
