| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 7 January 1934 |
| Designations | |
| (1297) Quadea | |
Named after | Quadea(parents-in-law of the discoverer's brother)[2] |
| 1934 AD · 1927 VB 1929 CA1 · 1929 EJ | |
| main-belt · (outer) Eos[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 89.31 yr (32,619 days) |
| Aphelion | 3.2383AU |
| Perihelion | 2.8024 AU |
| 3.0203 AU | |
| Eccentricity | 0.0722 |
| 5.25yr (1,917 days) | |
| 30.780° | |
| 0° 11m 16.08s / day | |
| Inclination | 9.0027° |
| 295.94° | |
| 123.49° | |
| Physical characteristics | |
| Dimensions | 19.62±1.00 km[5] 22.420±0.255 km[6] 23.408±0.216 km[7] 23.47 km(calculated)[3] 24.77±0.49 km[8] |
| 6.256±0.005h[9] 6.267±0.001 h[10] 6.267±0.005 h[11][a] 6.268±0.0012 h[12] | |
| 0.14(assumed)[3] 0.142±0.007[8] 0.1551±0.0098[7] 0.200±0.033[5] | |
| C[13] · S[3] | |
| 10.668±0.001(R)[12] · 10.80[7][8] · 10.87±0.28[13] · 10.90[1][3][5] | |
1297 Quadea, provisional designation1934 AD, is an Eoanasteroid from the outer regions of theasteroid belt, approximately 23 kilometers in diameter. It was discovered on 7 January 1934, by astronomerKarl Reinmuth at theHeidelberg-Königstuhl State Observatory inGermany.[14] The asteroid was named for the parents-in-law of the discoverer's brother.[2]
Quadea is a member theEos family (606),[4] the largestasteroid family in theouter main belt consisting of nearly 10,000 known asteroids.[15]: 23 It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,917 days). Its orbit has aneccentricity of 0.07 and aninclination of 9° with respect to theecliptic.[1]
The body'sobservation arc begins more than six years prior to its official discovery observation with its first identification as1927 VB at Heidelberg in November 1927.[14]
Quadea has been characterized as a carbonaceousC-type asteroid byPanSTARRS photometric survey.[13] The asteroid is also an assumedS-type asteroid,[3] while the overallspectral type for members of the Eos family is that of aK-type, with albedos in-between the S-and C-types.[15]: 23
Since 2006, several rotationallightcurves ofQuadea have obtained by astronomersPierre Antonini andBrian Warner, as well as from photometric observations at thePalomar Transient Factory, California, and the Oakley Southern Sky Observatory (E09) in Australia. Analysis of the best-rated lightcurve gave a well-definedrotation period of 6.267 hours and a brightness variation of 0.35magnitude (U=3/3/3/2).[9][10][11][12][a]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Quadea measures between 19.62 and 22.42 kilometers in diameter and its surface has analbedo between 0.1551 and 0.200,[5][6][7] while the JapaneseAkari satellite found a diameter of 24.7 kilometers with an albedo of 0.142.[8] TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 23.47 kilometers based on anabsolute magnitude of 10.9.[3]
Thisminor planet was named by the discoverer after the parents-in-law of his brother, E. Reinmuth. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 119).[2]
