5222 Ioffe, provisional designation 1980 TL13, is a rare-type carbonaceous Palladian asteroid from the central region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 11 October 1980, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj, Crimea.[3] It is the largest of the Palladian asteroids apart from Pallas itself.
 Rotating frame animation in reference to Jupiter. Each frame 81 years. | |
| Discovery [1] | |
|---|---|
| Discovered by | N. S. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 11 October 1980 |
| Designations | |
| (5222) Ioffe | |
Named after | Abram Ioffe (Soviet physicist)[2] |
| 1980 TL13 · 1978 LP 1989 TG1 | |
| main-belt [1][3] · (middle) Pallas [4] | |
| Orbital characteristics [1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.08 yr (23,405 days) |
| Aphelion | 3.1728 AU |
| Perihelion | 2.3788 AU |
| 2.7758 AU | |
| Eccentricity | 0.1430 |
| 4.62 yr (1,689 days) | |
| 172.25° | |
| 0° 12m 47.16s / day | |
| Inclination | 34.539° |
| 220.66° | |
| 331.02° | |
| Physical characteristics | |
| Dimensions | 17.989±0.093 km[5] 21.73 km[6] |
| 19.4 h[6] | |
| 0.1031[6] 0.1463±0.012 0.202±0.041[5] | |
| B (SMASSII)[1] | |
| 11.4[1] | |
Classification and orbit
edit
Ioffe is a member of the Pallas family (801), a small, carbonaceous asteroid family in the central main-belt.[4][7]: 23
It orbits the Sun at a distance of 2.4–3.2 AU once every 4 years and 7 months (1,689 days). Its orbit has an eccentricity of 0.14 and an inclination of 35° with respect to the ecliptic.[1] A first precovery was taken at Palomar Observatory in 1952, extending the asteroid's observation arc by 28 years prior to its official discovery observation at Nauchnyj.[3]
Physical characteristics
editIn the SMASS classification Ioffe is a carbonaceous B-type asteroid, in line with the overall spectral type of the Palladian asteroids.[1][7]: 23
Photometric observations of this asteroid collected during 2006 show a rotation period of 19.4 ± 0.2 hours with a brightness variation of 0.27 ± 0.03 magnitude.[8]
Naming
editThis minor planet was named in memory of Soviet physicist Abram Ioffe (1880–1960), an expert in electromagnetism, radiology, crystals, high-impact physics, thermoelectricity and photoelectricity. Ioffe was a pioneer in the investigation of semiconductors. Proposed by the Institute of Theoretical Astronomy, naming citation was published on 5 March 1996 (M.P.C. 26763).[2][9]
References
edit- ^ a b c d e f g "JPL Small-Body Database Browser: 5222 Ioffe (1980 TL13)" (2017-01-09 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 March 2017. Retrieved 20 March 2017.
- ^ a b Schmadel, Lutz D. (2007). "(5222) Ioffe". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 448. doi:10.1007/978-3-540-29925-7_5056. ISBN 978-3-540-00238-3.
- ^ a b c "5222 Ioffe (1980 TL13)". Minor Planet Center. Retrieved 20 March 2017.
- ^ a b "Asteroid 5222 Ioffe – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
- ^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 20 March 2017.
- ^ a b c "LCDB Data for (5222) Ioffe". Asteroid Lightcurve Database (LCDB). Retrieved 20 March 2017.
- ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
- ^ Warner, Brian D. (December 2006), "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006", The Minor Planet Bulletin, 33 (4): 85–88, Bibcode:2006MPBu...33...85W.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 March 2017.
External links
edit- Lightcurve plot of 5222 Ioffe, Palmer Divide Observatory, B. D. Warner (2004)
- 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 (1)-(5000) – Minor Planet Center
- 5222 Ioffe at AstDyS-2, Asteroids—Dynamic Site
- 5222 Ioffe at the JPL Small-Body Database
