1126 Otero

1126 Otero
	A lightcurve-based 3D-model of Otero
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg Obs.
Discovery date	11 January 1929
Designations
MPC designation	(1126) Otero
Named after	Carolina Otero; (Spanish courtesan)
Alternative designations	1929 AC · 1926 GD; 1948 RN1 · 1949 YO
Minor planet category	main-belt · Flora
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	90.71 yr (33,133 days)
Aphelion	2.6052 AU
Perihelion	1.9394 AU
Semi-major axis	2.2723 AU
Eccentricity	0.1465
Orbital period (sidereal)	3.43 yr (1,251 days)
Mean anomaly	291.09°
Mean motion	0° 17m 15.72s / day
Inclination	6.5045°
Longitude of ascending node	1.0892°
Argument of perihelion	136.08°
Physical characteristics
Dimensions	8.87±1.56 km; 10.974±0.892 km; 11.74 km (derived)
Synodic rotation period	3.648±0.002 h; 3.64808±0.00014 h
Geometric albedo	0.1994 (derived); 0.37±0.13; 0.399±0.320
Spectral type	SMASS = A · A
Absolute magnitude (H)	11.41 · 11.57±0.05 (R) · 11.9 · 12.098±0.071 · 12.10

1126 Otero, provisional designation 1929 AC, is a rare-type Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 11 January 1929, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.^[8] It was named after Spanish courtesan Carolina Otero.^[2]

Classification and orbit

Otero is a member of the Flora family, one of the largest families of stony asteroids in the main belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,251 days). Its orbit has an eccentricity of 0.15 and an inclination of 7° with respect to the ecliptic.^[1] It was first identified as 1926 GD at Uccle/Heidelberg in 1926, extending the asteroid's observation arc by 3 years prior to its official discovery at Heidelberg.^[8]

Physical parameters

In the SMASS classification, Otero is a rare A-type asteroid.^[1]

Lightcurves

Two rotational lightcurve of Otero were obtained from photometric observations by astronomers Petr Pravec and Robert Stepens in February 2008. Lightcurve analysis gave a concurring, well-defined rotation period of 3.648 hours with a brightness variation of 0.69 and 0.70 magnitude, respectively (U=3/3).^[6]^[a]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Otero measures 8.87 and 10.974 kilometers in diameter and its surface has an albedo of 0.37 and 0.399, respectively.^[4]^[5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1994 and a diameter of 11.74 kilometers with an absolute magnitude of 12.098 from Petr Pravec's revised WISE-data.^[3]^[7]

Naming

This minor planet was named by the discoverer for Galician-born Spanish courtesan, dancer and actress Carolina Otero (1868–1965), who was also known as "La Belle Otero". During the Belle Époque, she was the most sought after woman in all of Europe and led an excessive life thanks to her numerous rich and famous lovers. The official naming citation was first published by the Astronomical Calculation Institute (RI 803).^[2]

Notes

^ ^a ^b ^c Pravec (2008) web: lightcurve plot of (1126) Otero by Petr Pravec of the Ondrejov Asteroid Photometry Project, with rotation period 3.64808±0.00014 hours and a brightness amplitude of 0.69 mag. Summary figures at Collaborative Asteroid Lightcurve Link and Pravec, P.; Wolf, M.; Sarounova, L. (2008)

References

^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 1126 Otero (1929 AC)" (2016-12-21 last obs.). Jet Propulsion Laboratory. Retrieved 26 July 2017.
^ ^a ^b ^c Schmadel, Lutz D. (2007). "(1126) Otero". Dictionary of Minor Planet Names – (1126) Otero. Springer Berlin Heidelberg. pp. 95–96. doi:10.1007/978-3-540-29925-7_1127. ISBN 978-3-540-00238-3.
^ ^a ^b ^c ^d ^e ^f "LCDB Data for (1126) Otero". Asteroid Lightcurve Database (LCDB). Retrieved 14 March 2017.
^ ^a ^b ^c ^d 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. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
^ ^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 14 March 2017.
^ ^a ^b Stephens, Robert D. (September 2008). "Asteroids Observed from GMARS and Santana Observatories - Late 2007 and Early 2008". The Minor Planet Bulletin. 35 (3): 126–128. Bibcode:2008MPBu...35..126S. ISSN 1052-8091. Retrieved 14 March 2017.
^ ^a ^b Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 14 March 2017.
^ ^a ^b "1126 Otero (1929 AC)". Minor Planet Center. Retrieved 14 March 2017.

External links

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
1126 Otero at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
1126 Otero at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[LCDB-Pravec-2008-7] Pravec (2008) web: lightcurve plot of (1126) Otero by Petr Pravec of the Ondrejov Asteroid Photometry Project, with rotation period 3.64808±0.00014 hours and a brightness amplitude of 0.69 mag. Summary figures at Collaborative Asteroid Lightcurve Link and Pravec, P.; Wolf, M.; Sarounova, L. (2008)

[jpldata-1] ^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 1126 Otero (1929 AC)" (2016-12-21 last obs.). Jet Propulsion Laboratory. Retrieved 26 July 2017.

[springer-2] Schmadel, Lutz D. (2007). "(1126) Otero". Dictionary of Minor Planet Names – (1126) Otero. Springer Berlin Heidelberg. pp. 95–96. doi:10.1007/978-3-540-29925-7_1127. ISBN 978-3-540-00238-3.

[lcdb-3] ^ ^a ^b ^c ^d ^e ^f "LCDB Data for (1126) Otero". Asteroid Lightcurve Database (LCDB). Retrieved 14 March 2017.

[Nugent-2016-4] 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. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.

[Masiero-2012-5] 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 14 March 2017.

[Stephens-2008e-6] Stephens, Robert D. (September 2008). "Asteroids Observed from GMARS and Santana Observatories - Late 2007 and Early 2008". The Minor Planet Bulletin. 35 (3): 126–128. Bibcode:2008MPBu...35..126S. ISSN 1052-8091. Retrieved 14 March 2017.

[Pravec-2012b-8] Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 14 March 2017.

[MPC-Otero-9] "1126 Otero (1929 AC)". Minor Planet Center. Retrieved 14 March 2017.

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