7648 Tomboles
| Discovery [1] | |
|---|---|
| Discovered by | Y. Mizuno T. Furuta |
| Discovery site | Kani Obs. |
| Discovery date | 8 October 1989 |
| Designations | |
| (7648) Tomboles | |
Named after | Tom Boles [1] (Scottish astronomer) |
| 1989 TB1 · 1981 CE 1984 BK1 · 1986 WD10 | |
| main-belt [1][2] · (inner) background [3] | |
| Orbital characteristics [2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.42 yr (13,301 d) |
| Aphelion | 2.3980 AU |
| Perihelion | 1.9152 AU |
| 2.1566 AU | |
| Eccentricity | 0.1119 |
| 3.17 yr (1,157 d) | |
| 316.41° | |
| 0° 18m 40.32s / day | |
| Inclination | 2.7210° |
| 11.756° | |
| 53.726° | |
| Physical characteristics | |
| 3.914±0.123 km[4] | |
| 0.200±0.027[4] | |
| 14.3[1][2] | |
7648 Tomboles, provisional designation 1989 TB1, is a background asteroid from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 8 October 1989, by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at the Kani Observatory in Kani, Japan. The asteroid was named after Scottish amateur astronomer Tom Boles.[1]
Orbit and classification
[edit]Tomboles is a non-family asteroid from the main belt's background population.[3] It orbits the Sun in the inner main-belt at a distance of 1.9–2.4 AU once every 3 years and 2 months (1,157 days; semi-major axis of 2.16 AU). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.[2]
The body's observation arc begins with its first observation as 1981 CE at the Klet Observatory in February 1981.[1]
Physical characteristics
[edit]Tomboles has an absolute magnitude of 14.3.[1][2] While its spectral type is unknown, it is likely a stony S-type asteroid based on the albedo (see below) derived from observations with the Wide-field Infrared Survey Explorer (WISE). As of 2018, no rotational lightcurve of this asteroid has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2]
Diameter and albedo
[edit]According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Tomboles measures 3.91 kilometers in diameter and its surface has an albedo of 0.20.[4]
Naming
[edit]This minor planet was named after Scottish amateur astronomer Tom Boles (born 1944) a discoverer of a minor planet (also see 84417 Ritabo) and a record-number of supernovae, using a robotic telescope at Coddenham Observatory (234) in Coddenham, Suffolk, in eastern England. Boles has been the President of the British Astronomical Association from 2003 to 2005.[1]
The official naming citation was published by the Minor Planet Center on 13 November 2008 (M.P.C. 64311).[5]
References
[edit]- ^ a b c d e f g h "7648 Tomboles (1989 TB1)". Minor Planet Center. Retrieved 23 May 2018.
- ^ a b c d e f "JPL Small-Body Database Browser: 7648 Tomboles (1989 TB1)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 23 May 2018.
- ^ a b "Asteroid 7648 Tomboles". Small Bodies Data Ferret. Retrieved 23 May 2018.
- ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 23 May 2018.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 23 May 2018.
External links
[edit]- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 7648 Tomboles at AstDyS-2, Asteroids—Dynamic Site
- 7648 Tomboles at the JPL Small-Body Database
