6433 Enya

6433 Enya
Discovery
Discovered by	A. Mrkos
Discovery site	Kleť Obs.
Discovery date	18 November 1978
Designations
MPC designation	(6433) Enya
Named after	Enya (Irish musician)
Alternative designations	1978 WC · 1952 UH; 1989 WZ4
Minor planet category	main-belt · (inner) ; background
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	64.53 yr (23,568 days)
\|{{{apsis}}}\|helion}}	2.9085 AU
\|{{{apsis}}}\|helion}}	1.8673 AU
Semi-major axis	2.3879 AU
Eccentricity	0.2180
Orbital period	3.69 yr (1,348 days)
Mean anomaly	191.23°
Mean motion	0° 16m 1.56s / day
Inclination	8.6309°
Longitude of ascending node	87.329°
\|{{{apsis}}}\|helion}}	317.28°
Physical characteristics
Dimensions	3.68 km (calculated); 6.69±0.97 km; 7.08±1.79 km; 7.416±0.165 km
Rotation period	7.400±0.0064 h
Geometric albedo	0.06±0.04; 0.081±0.012; 0.090±0.025; 0.20 (assumed)
Spectral type	S
Absolute magnitude (H)	14.0 · 14.00±0.55 · 14.087±0.003 (R) · 14.10 · 14.3 · 14.37 · 14.54

6433 Enya, provisional designation 1978 WC, is a stony background asteroid from the inner regions of the asteroid belt, approximately 7 kilometers (4.3 miles) in diameter. It was discovered on 18 November 1978, by Czech astronomer Antonín Mrkos at the Kleť Observatory in the Czech Republic.^[10] It was named for Irish musician Enya.^[2]

Orbit and classification

Enya is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.9 AU once every 3 years and 8 months (1,348 days). Its orbit has an eccentricity of 0.22 and an inclination of 9° with respect to the ecliptic.^[1] Enya was first identified as 1952 UH at Goethe Link Observatory in 1952. The body's observation arc, however, begins with its official discovery observation at Kleť in 1978.^[10]

Physical characteristics

Enya is a presumed S-type asteroid.^[3]

Rotation period

In March 2013, a fragmentary rotational lightcurve of Enya was obtained from photometric observations at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 7.4 hours with a brightness variation of 0.08 magnitude ({{{1}}}).^[8]

As of 2017, no other lightcurve has since been obtained from Enya.^[3]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Enya measures between 6.69 and 7.416 kilometers in diameter, and its surface has an albedo between 0.012 and 0.090.^[4]^[5]^[6]^[7]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.68 kilometers with an absolute magnitude of 14.54.^[3]

Naming

This minor planet was named after Eithne Pádraigín Ní Bhraonáin (born 1961), known as Enya, an Irish singer, songwriter, musician, and producer.^[2] Naming was proposed by G. V. Williams and published on 20 June 1997 (M.P.C. 30099).^[11]

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 "JPL Small-Body Database Browser: 6433 Enya (1978 WC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006433.
↑ ^2.0 ^2.1 ^2.2 Schmadel, Lutz D. (2007). "(6433) Enya". Dictionary of Minor Planet Names – (6433) Enya. Springer Berlin Heidelberg. p. 532. doi:10.1007/978-3-540-29925-7_5865. ISBN 978-3-540-00238-3.
↑ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 ^3.6 ^3.7 "LCDB Data for (6433) Enya". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=6433%7CEnya.
↑ ^4.0 ^4.1 ^4.2 ^4.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 15 March 2017.
↑ ^5.0 ^5.1 ^5.2 ^5.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N.
↑ ^6.0 ^6.1 ^6.2 ^6.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
↑ ^7.0 ^7.1 ^7.2 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 15 March 2017.
↑ ^8.0 ^8.1 ^8.2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 15 March 2017.
↑ 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 15 March 2017.
↑ ^10.0 ^10.1 "6433 Enya (1978 WC)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=6433.
↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.

External links

About (6433) Enya, Rock & Roll Minor Planets, Minor Planet Center
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 (5001)-(10000) – Minor Planet Center
6433 Enya at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
6433 Enya at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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Original source: https://en.wikipedia.org/wiki/6433 Enya. Read more

[jpldata-1] 1.0 ^1.1 ^1.2 ^1.3 "JPL Small-Body Database Browser: 6433 Enya (1978 WC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006433.

[springer-2] 2.0 ^2.1 ^2.2 Schmadel, Lutz D. (2007). "(6433) Enya". Dictionary of Minor Planet Names – (6433) Enya. Springer Berlin Heidelberg. p. 532. doi:10.1007/978-3-540-29925-7_5865. ISBN 978-3-540-00238-3.

[lcdb-3] 3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 ^3.6 ^3.7 "LCDB Data for (6433) Enya". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=6433%7CEnya.

[Masiero-2012-4] 4.0 ^4.1 ^4.2 ^4.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 15 March 2017.

[Nugent-2016-5] 5.0 ^5.1 ^5.2 ^5.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N.

[WISE-6] 6.0 ^6.1 ^6.2 ^6.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.

[Masiero-2011-7] 7.0 ^7.1 ^7.2 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 15 March 2017.

[Waszczak-2015-8] 8.0 ^8.1 ^8.2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 15 March 2017.

[Veres-2015-9] 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 15 March 2017.

[MPC-Enya-10] 10.0 ^10.1 "6433 Enya (1978 WC)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=6433.

[MPC-Circulars-Archive-11] "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.

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