13123 Tyson
| Discovery [1] | |
|---|---|
| Discovered by |
C. Shoemaker D. H. Levy |
| Discovery site | Palomar Obs. |
| Discovery date | 16 May 1994 |
| Designations | |
| MPC designation | 13123 Tyson |
Named after |
Neil deGrasse Tyson (astrophysicist)[2] |
| 1994 KA · 1995 YO2 | |
| main-belt · Phocaea [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.07 yr (23,038 days) |
| Aphelion | 2.9990 AU |
| Perihelion | 1.7205 AU |
| 2.3598 AU | |
| Eccentricity | 0.2709 |
| 3.63 yr (1,324 days) | |
| 275.49° | |
| 0° 16m 18.48s / day | |
| Inclination | 23.287° |
| 68.808° | |
| 252.02° | |
| Earth MOID | 0.8340 AU |
| Jupiter Tisserand parameter | 3.396 |
| Physical characteristics | |
| Dimensions |
10.87±0.61 km[4] 8.22 km (calculated)[3] |
|
3.3303±0.0002 h[lower-alpha 1] 3.329±0.001 h[5] | |
|
0.197±0.025[4] 0.23 (assumed)[3] | |
| S [3] | |
|
12.3[1] 12.64[3] 12.20[4] 12.19±0.09 (R)[lower-alpha 1] 12.41±0.41[6] | |
|
| |
13123 Tyson, provisional designation 1994 KA, is a stony Phocaea asteroid and a possible binary system[lower-alpha 1] from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by American astronomer Carolyn Shoemaker and Canadian astronomer David H. Levy at the U.S. Palomar Observatory, California, on 16 May 1994.[7]
The stony S-type asteroid is a member of the Phocaea family, a rather small group of asteroids with similar orbital characteristics, named after its largest member, 25 Phocaea. It orbits orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 8 months (1,324 days). Its orbit has an eccentricity of 0.27 and an inclination of 23° with respect to the ecliptic.[1] Due to a precovery obtained at Palomar Observatory (DSS) in 1953, the asteroid's observation arc begins more than 40 years prior to its actual discovery.[7]
In 2015, a rotational light-curve was obtained by astronomer Petr Pravec at the Astronomical Institute, Czech Republic. It showed a well-defined rotation period of 3.3303±0.0002 hours with a brightness amplitude of 0.20 in magnitude (U=3).[lower-alpha 1] A previous photometric observation at the Oakley Southern Sky Observatory, Australia, gave a light-curve with a similar period of 3.329±0.001 and a brightness variation of 0.35 in magnitude (U=3-).
According to the survey carried out by NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 10.9 kilometers in diameter and its surface has an albedo of 0.197,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.23 and calculates a somewhat smaller diameter of 8.2 kilometers.[3]
The minor planet was named in honor of American astrophysicist and popular science communicator, Neil deGrasse Tyson (b. 1958). In 1996, he became director of New York's Hayden Planetarium and oversaw of its complete reconstruction. Tyson was also a research affiliate at Princeton University.[2]
References
- 1 2 3 4 Pravec (2015) web: rotation period of 3.3303±0.0002 hours with a brightness amplitude of 0.20 mag at H= 12.19±0.09 (R) and an assigned quality code of U=3. It is a possible binary asteroid, but lacks mutual eclipse/occultation events. Two periods were derived: 3.3302 and 3.862 hours, with an amplitude of 0.2 and 0.04 mag, respectively. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (13123) Tyson, also see Pravec, P
.; Wolf, M .; Sarounova, L . (2015)
- 1 2 3 4 "JPL Small-Body Database Browser: 13123 Tyson (1994 KA)" (2016-03-13 last obs.). Jet Propulsion Laboratory. Retrieved 9 April 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (13123) Tyson. Springer Berlin Heidelberg. p. 793. ISBN 978-3-540-00238-3. Retrieved April 2016.
- 1 2 3 4 5 6 "LCDB Data for (13123) Tyson". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
- 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved April 2016.
- ↑ Krotz, Jonathan; Albers, Kendra; Carbo, Landry; Kragh, Katherine; Meiers, Andrew; Yim, Arnold; et al. (July 2010). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory". The Minor Planet Bulletin 37 (3): 99–101. Bibcode:2010MPBu...37...99K. ISSN 1052-8091. Retrieved April 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved April 2016.
- 1 2 "13123 Tyson (1994 KA)". Minor Planet Center. Retrieved April 2016.
External links
- SLA 2009 Conference Neil deGrasse Tyson, Keynote Speaker
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 13123 Tyson at the JPL Small-Body Database
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