| Discovery[1] | |
|---|---|
| Discovered by | UESAC |
| Discovery site | La Silla Obs. |
| Discovery date | 21 March 1993 |
| Designations | |
| (7348)1993 FJ22 | |
| 1993 FJ22 · 1933 FU 1978 NM5 · 1991 XF3 | |
| main-belt · Themis[2] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.28 yr (30,783 days) |
| Aphelion | 3.4232AU |
| Perihelion | 2.7623 AU |
| 3.0927 AU | |
| Eccentricity | 0.1069 |
| 5.44yr (1,987 days) | |
| 206.95° | |
| Inclination | 0.8715° |
| 11.015° | |
| 151.44° | |
| Physical characteristics | |
| Dimensions | 9.91 km(calculated)[2] |
| 3.470±0.020 h[3] 3.4735±0.0031h[4] | |
| 0.08(assumed)[2] | |
| C[2] | |
| 12.9[1] · 12.780±0.050[3] · 12.929±0.001[4] · 13.38[2] | |
(7348) 1993 FJ22 is a carbonaceous, Themistianasteroid from the outer region of theasteroid belt, about 10 kilometers in diameter. It was discovered on 21 March 1993, by theUppsala-ESO Survey of Asteroids and Comets (UESAC) atESO'sLa Silla Observatory site in northern Chile.[5]
The darkC-type asteroid is a member of theThemis family, a dynamical family of outer-belt asteroids with nearly coplanarecliptical orbits.[2] It orbits the Sun in theouter main-belt at a distance of 2.8–3.4 AU once every 5 years and 5 months (1,987 days). Its orbit has aneccentricity of 0.11 and aninclination of 1° with respect to theecliptic. It was first identified as1933 FU atHeidelberg in 1933, extending the body'sobservation arc by 60 years prior to its official discovery observation at La Silla.[1]
In 2014, two rotationallightcurves of this asteroid were obtained from photometric observations in the R-band at the U.S.Palomar Transient Factory in California. Lightcurve analysis gave arotation period of 3.4735 and 3.470 hours with a brightness variation of 0.10 and 0.13 inmagnitude, respectively (U=2/2).[3][4]
TheCollaborative Asteroid Lightcurve Link (CALL) assumes a lowalbedo of 0.08 for the asteroid's surface and calculates a diameter of 9.9 kilometers, based on anabsolute magnitude of 13.38.[2]
As of 2017, the asteroid has not been named.[5]
