|Discovered by||C. Shoemaker
D. H. Levy
|Discovery site||Palomar Obs.|
|Discovery date||16 May 1994|
|MPC designation||13123 Tyson|
|Neil deGrasse Tyson
|1994 KA · 1995 YO2|
|main-belt · Phocaea |
|Orbital characteristics |
|Epoch 31 July 2016 (JD 2457600.5)|
|Uncertainty parameter 0|
|Observation arc||63.17 yr (23,073 days)|
|3.62 yr (1,324 days)|
|0° 16m 18.84s / day|
|Dimensions||8.22 km (calculated)
±0.61 km 10.87
±0.0002 h 3.3303[a]
|±0.09 (R) 12.19[a]
13123 Tyson, provisional designation 1994 KA, is a stony Phocaea asteroid and a possible binary system[a] 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.
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. The first precovery was taken at Palomar's Digitized Sky Survey (DSS) in 1953, extending the asteroid's observation arc by 41 years prior to its discovery.
In February 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 ±0.0002 hours with a brightness amplitude of 0.20 in 3.3303magnitude (U=3).[a] A previous photometric observation in August 2009, at the Oakley Southern Sky Observatory, Australia, gave a light-curve with a similar period of ±0.001 and a brightness variation of 0.35 in magnitude ( 3.329U=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, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.23 and calculates a smaller diameter of 8.2 kilometers, based on an absolute magnitude of 12.64.
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. Naming citation was published on 11 November 2000 (M.P.C. 41572).
- Pravec (2015) web: rotation period of ±0.0002 hours with a brightness amplitude of 3.3303 mag at H= 0.20±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 12.19Collaborative Asteroid Lightcurve Link (CALL) for (13123) Tyson, also see Pravec, P
.; Wolf, M .; Sarounova, L . (2015)
- "JPL Small-Body Database Browser: 13123 Tyson (1994 KA)" (2016-04-17 last obs.). Jet Propulsion Laboratory. Retrieved May 2016.
- 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.
- "LCDB Data for (13123) Tyson". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
- 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 May 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 May 2016.
- "13123 Tyson (1994 KA)". Minor Planet Center. Retrieved April 2016.
- "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved May 2016.
- 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