_Barry.png) Shape model ofBarry from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | M. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 2 September 1930 |
| Designations | |
| (1703) Barry | |
Named after | Roger Barry(astronomer)[2] |
| 1930 RB · 1939 FD 1940 TP · 1943 PA 1953 PK · 1963 SB | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.57 yr (31,620 days) |
| Aphelion | 2.5955AU |
| Perihelion | 1.8331 AU |
| 2.2143 AU | |
| Eccentricity | 0.1721 |
| 3.30yr (1,204 days) | |
| 155.09° | |
| 0° 17m 56.76s / day | |
| Inclination | 4.5196° |
| 112.28° | |
| 213.42° | |
| Physical characteristics | |
| Dimensions | 9.21±0.49 km[4] 9.41±0.5 km[5] 9.50±0.24 km[6] 9.54 km(derived)[3] |
| 105.7450±1.8907 h[7] 107.04±0.05 h[8] 107.1±0.5h[9] | |
| 0.216±0.012[6] 0.2187±0.026[5] 0.2805(derived)[3] 0.330±0.032[4] | |
| S[3] | |
| 11.845±0.001(R)[7] · 12.00[4] · 12.06±0.30[10] · 12.1[1][3] · 12.40[5][6] | |
1703 Barry (prov. designation:1930 RB) is a stonyFlora asteroid, suspected tumbler andslow rotator from the inner regions of theasteroid belt, approximately 9.5 kilometer in diameter. Discovered byMax Wolf in 1930, it was later named after Vincentian priest and astronomerRoger Barry.
Barry was discovered on 2 September 1930, by German astronomerMax Wolf atHeidelberg Observatory in southern Germany.[11] In the same month, it was independently discovered by Dutch astronomerHendrik van Gent and Soviet astronomerEvgenii Skvortsov at their observatories inJohannesburg andCrimea-Nauchnij, respectively.[2]
The relatively brightS-type asteroid is a member of theFlora family, one of the largest collisional groups in the main-belt.[5][6][4] It orbits the Sun in theinner main-belt at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,204 days). Its orbit has aneccentricity of 0.17 and aninclination of 5° with respect to theecliptic.[1] Itsobservation arc begins with its official discovery observation at Heidelberg.[11]
Thisminor planet was named afterVincentian priest Roger Barry (1752–1813), the Court Astronomer of Grand Duchy of Baden at theMannheim Observatory in 1788. The Heidelberg Observatory is a direct successor to the old Mannheim Observatory.[2] The officialnaming citation was published by theMinor Planet Center on 20 February 1976 (M.P.C. 3933).[12]
Photometric observations taken in 2006 and 2011, byAdrián Galád and by thePalomar Transient Factory, showed a leisurelyrotation period of 105.745 and107.1±0.5 hours with a brightness variation of0.5 and 0.46magnitude, respectively (U=3/2).[7][8][9]
While most asteroids rotate within 20 hours once around their axis,Barry belongs to the relatively small group ofslow rotators with aperiod above 100 hours.[3]
It may have a non-principal axis rotation.[9] However, no follow-up measurements have since confirmed its tumbling motion.[3]
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,Barry measures between 9.21 and 9.50 kilometers in diameter and its surface has analbedo between 0.216 and 0.330,[4][5][6] while theCollaborative Asteroid Lightcurve Link derives an albedo of 0.280 and a diameter of 9.54 kilometers with anabsolute magnitude of 12.1.[3]
