| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 25 August 1930 |
| Designations | |
| (1168) Brandia | |
Named after | Eugène Brand[2] (Belgian mathematician) |
| 1930 QA | |
| main-belt · (middle) Eunomia[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.70 yr (30,208 days) |
| Aphelion | 3.1088AU |
| Perihelion | 1.9931 AU |
| 2.5510 AU | |
| Eccentricity | 0.2187 |
| 4.07yr (1,488 days) | |
| 120.52° | |
| 0° 14m 30.84s / day | |
| Inclination | 12.735° |
| 218.65° | |
| 122.91° | |
| Physical characteristics | |
| Dimensions | 10.110±0.057 km[5][6] 10.58 km(derived)[3] 10.61±0.7 km[7] |
| 11.444h[8] 11.444 h[9] | |
| 0.1375(derived)[3] 0.150±0.038[5] 0.1505±0.0383[6] 0.1526±0.021[7] | |
| S[3] B–V = 0.860[1] U–B = 0.470[1] | |
| 12.30±0.23[10] · 12.53[1][7] · 12.65[3][6][9] | |
1168 Brandia, provisional designation1930 QA, is a stony Eunomianasteroid from the central regions of theasteroid belt, approximately 10 kilometers in diameter. Discovered by astronomerEugène Delporte atUccle Observatory in 1930, the asteroid was later named after mathematicianEugène Brand.[2]
Brandia was discovered on 25 August 1930, by astronomerEugène Delporte at theRoyal Observatory of Belgium in Uccle. Six nights later, the asteroid was independently discovered by Soviet astronomerGrigory Neujmin atSimeiz Observatory on 31 August 1930. TheMinor Planet Center, however, only recognizes the first discoverer.[2][11] The body'sobservation arc begins at Uccle, two nights after its official discovery observation.[11]
This asteroid is a member of theEunomia family (502), a prominentfamily of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members.[3][4][12]: 23
Brandia orbits the Sun in thecentral main-belt at a distance of 2.0–3.1 AU once every 4 years and 1 month (1,488 days). Its orbit has aneccentricity of 0.22 and aninclination of 13° with respect to theecliptic.[1]
Brandia is an assumedS-type asteroid,[3] which corresponds to the overallspectral type of the Eunomia family.[12]: 23
In September 1989, a rotationallightcurve ofBrandia was obtained from photometric observations by American astronomerRichard Binzel atCTIO andMcDonald Observatory. Lightcurve analysis gave a well-definedrotation period of hours with a relatively high brightness variation of 0.62magnitude (U=3).[9]
An identical period of 11.444 hours with an amplitude of 0.50 magnitude was measured with a Celestron 14-inch telescope byFrederick Pilcher and published in 1985 (U=2).[8]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Brandia measures 10.110 and 10.61 kilometers in diameter, and its surface has analbedo of 0.150 and 0.1526, respectively.[5][6][7]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.1375 and a diameter of 10.58 kilometers based on anabsolute magnitude of 12.65.[3]
Thisminor planet was named after Belgian mathematicianEugène Brand, professor at theUniversity of Brussels in Belgium. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 109).[2]
