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13123 Tyson - Wikipedia

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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 (American astrophysicist)^[2]
Alternative designations	1994 KA · 1995 YO₂
Minor planet category	main-belt · Phocaea^[3]^[4]
Orbital characteristics^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	63.78 yr (23,297 days)
Aphelion	2.9996 AU
Perihelion	1.7201 AU
Semi-major axis	2.3598 AU
Eccentricity	0.2711
Orbital period (sidereal)	3.63 yr (1,324 days)
Mean anomaly	78.622°
Mean motion	0° 16^m 18.84^s / day
Inclination	23.289°
Longitude of ascending node	68.802°
Argument of perihelion	252.04°
Known satellites	1^[5]^[6]^[a]
Physical characteristics
Dimensions	8.22 km (calculated)^[3] 10.87±0.61 km^[7]
Synodic rotation period	3.329±0.001 h^[8] 3.3303±0.0002 h^[5]^[a]
Geometric albedo	0.197±0.025^[7] 0.23 (assumed)^[3]
Spectral type	S^[3]
Absolute magnitude (H)	12.19±0.09 (R)^[5] · 12.20^[7] · 12.3^[1] · 12.41±0.41^[9] · 12.64^[3]

13123 Tyson, provisional designation 1994 KA, is a stony Phocaea asteroid and an asynchronous binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on May 16, 1994, by American astronomer Carolyn Shoemaker and Canadian astronomer David Levy at the Palomar Observatory in California, United States.^[10] The asteroid was named for Neil deGrasse Tyson, American astrophysicist and popular science communicator.^[2]

Orbit and classification

The stony S-type asteroid is a member of the Phocaea family (701),^[4] a rather small group of asteroids with similar orbital characteristics, named after its largest member, 25 Phocaea. It orbits the Sun in the inner main-belt 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] 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.^[10]

Physical characteristics

Rotation period

In February 2015, a rotational lightcurve was obtained by astronomer Petr Pravec at the Astronomical Institute, Czech Republic. It showed a well-defined rotation period of 3.3303 hours with a brightness amplitude of 0.20 in magnitude (U=3).^[5]^[a] A previous photometric observation in August 2009, at the Oakley Southern Sky Observatory, Australia, gave a lightcurve with a similar period of 3.329 hours and a brightness variation of 0.35 magnitude (U=3-).^[8]

Satellite

Tyson is an asynchronous binary asteroid, with a minor planet moon, designated S/2015 (13123) 1 in its orbit. The satellite has a rotation period of 3.862 hours. No other physical properties for this binary system has been published.^[5]^[6]^[a]

Diameter and albedo

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,^[7] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.23 and calculates a smaller diameter of 8.2 kilometers with an absolute magnitude of 12.64.^[3]

Naming

This minor planet was named in honor of American astrophysicist and popular science communicator, Neil deGrasse Tyson (born 1958). In 1996, he became director of New York's Hayden Planetarium and was the chief scientist for its complete renovation. At the time, Tyson was also a research affiliate at Princeton University.^[2] The official naming citation was published by the Minor Planet Center on 11 November 2000 (M.P.C. 41572).^[11]

Notes

^ ^a ^b ^c ^d Pravec (2015/16): lightcurve plot of (13123) Tyson with a rotation period of 3.3303±0.0002 hours and a brightness amplitude of 0.20 mag at H= 12.19±0.09 (R) and an assigned quality code of U=3. It is an unconfirmed binary asteroid, that lacks mutual eclipse/occultation events. Two periods were derived: 3.3302 (primary, first plot) and 3.862 hours (satellite, second lightcurve plot), with an amplitude of 0.2 and 0.04 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL), also see Pravec, P.; Wolf, M.; Sarounova, L. (2015), and 2016-publication^[5]

References

^ ^a ^b ^c ^d "JPL Small-Body Database Browser: 13123 Tyson (1994 KA)" (2016-11-27 last obs.). Jet Propulsion Laboratory. Retrieved 24 June 2017.
^ ^a ^b ^c Schmadel, Lutz D. (2007). "(13123) Tyson". Dictionary of Minor Planet Names – (13123) Tyson. Springer Berlin Heidelberg. p. 793. doi:10.1007/978-3-540-29925-7_8741. ISBN 978-3-540-00238-3.
^ ^a ^b ^c ^d ^e ^f "LCDB Data for (13123) Tyson". Asteroid Lightcurve Database (LCDB). Retrieved 6 April 2016.
^ ^a ^b "Asteroid 13123 Tyson – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
^ ^a ^b ^c ^d ^e ^f Pravec, P.; Scheirich, P.; Kusnirák, P.; Hornoch, K.; Galád, A.; Naidu, S. P.; et al. (March 2016). "Binary asteroid population. 3. Secondary rotations and elongations". Icarus. 267: 267–295. Bibcode:2016Icar..267..267P. doi:10.1016/j.icarus.2015.12.019. Retrieved 24 June 2017.
^ ^a ^b Johnston, Robert (27 November 2015). "(13123) Tyson". johnstonsarchive.net. Retrieved 24 June 2017.
^ ^a ^b ^c ^d 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 19 May 2016.
^ ^a ^b 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 6 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 19 May 2016.
^ ^a ^b "13123 Tyson (1994 KA)". Minor Planet Center. Retrieved 6 April 2016.
^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 19 May 2016.

External links

SLA 2009 Conference Neil deGrasse Tyson, Keynote Speaker
Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
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 (10001)-(15000) – Minor Planet Center
13123 Tyson at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
13123 Tyson at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

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Books	Death by Black Hole: And Other Cosmic Quandaries (2007) The Pluto Files: The Rise and Fall of America's Favorite Planet (2009) Space Chronicles: Facing the Ultimate Frontier (2012) Welcome to the Universe: An Astrophysical Tour (2016) Astrophysics for People in a Hurry (2017) Accessory to War: The Unspoken Alliance Between Astrophysics and the Military (2018)
TV shows	400 Years of the Telescope (2009) Nova ScienceNow (2006–2011) The Universe (2005–2008) Cosmos: A Spacetime Odyssey (2014) StarTalk (2015–2019) Cosmos: Possible Worlds (2020)
Other	StarTalk (podcast) (2009–present) 13123 Tyson "Flatline" Manhattanhenge

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