1346 Gotha

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1346 Gotha
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date 5 February 1929
Designations
MPC designation (1346) Gotha
Named after
Gotha[2]
(German city in Thuringia)
1929 CY · 1931 RC1
1948 PL1 · 1952 OC
main-belt · (middle)[3]
background [4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 88.73 yr (32,409 days)
Aphelion 3.0961 AU
Perihelion 2.1587 AU
2.6274 AU
Eccentricity 0.1784
4.26 yr (1,556 days)
8.3792°
0° 13m 53.04s / day
Inclination 13.851°
166.13°
249.99°
Physical characteristics
Dimensions 13.731±0.120 km[5]
13.747±0.325 km[6]
16.18 km (derived)[3]
2.640±0.0006 h[7]
2.64067±0.00002 h[8]
2.642±0.001 h[9]
2.6548±0.0002 h[8]
11.19 h[10]
0.20 (assumed)[3]
0.278±0.009[5]
0.2794±0.0411[6]
S (estimated / assumed)[3][10]
B–V = 0.840 [1]
11.141±0.001 (R)[7] · 11.25[1] · 11.32[3][6][10]

1346 Gotha, provisional designation 1929 CY, is a stony background asteroid from the central regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered on 5 February 1929, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[11] The asteroid was named for the German city of Gotha, located in Thuringia.[2]

Orbit and classification[edit]

Gotha is a non-family asteroid of the main belt's background population.[4] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,556 days; semi-major axis of 2.63 AU). Its orbit has an eccentricity of 0.18 and an inclination of 14° with respect to the ecliptic.[1]

The body's observation arc begins with its official discovery observation at Heidelberg in 1929.[11]

Physical characteristics[edit]

Gotha has been estimated to be a stony S-type asteroid.[3][10]

Rotation period[edit]

Several rotational lightcurves of Gotha have been obtained from photometric observations since 1984.[7][8][9][10] Lightcurve analysis gave a consolidated rotation period of 2.64067 hours with a brightness variation between 0.10 and 0.16 magnitude (U=3-).[3]

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Gotha measures between 13.731 and 13.747 kilometers in diameter and its surface has an albedo between 0.278 and 0.2794.[5][6]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 16.18 kilometers based on an absolute magnitude of 11.32.[3]

Naming[edit]

This minor planet was named after the city of Gotha, located near Erfurt capital of the Free State of Thuringia, Germany. The asteroids 1254 Erfordia and 934 Thüringia are also named after these places. The city is known for its Gotha Observatory and the work of astronomer Franz Xaver von Zach (1754–1832), who recovered the dwarf planet Ceres and after whom 999 Zachia was named. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 122).[2]

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: 1346 Gotha (1929 CY)" (2017-10-30 last obs.). Jet Propulsion Laboratory. Retrieved 16 November 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1346) Gotha. Springer Berlin Heidelberg. p. 109. ISBN 978-3-540-00238-3. Retrieved 16 November 2017. 
  3. ^ a b c d e f g h "LCDB Data for (1346) Gotha". Asteroid Lightcurve Database (LCDB). Retrieved 16 November 2017. 
  4. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 16 November 2017. 
  5. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 16 November 2017. 
  6. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 16 November 2017. 
  7. ^ a b c 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. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 16 November 2017. 
  8. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (1346) Gotha". Geneva Observatory. Retrieved 16 November 2017. 
  9. ^ a b Aznar Macias, Amadeo (January 2017). "Lightcurve Analysis from APT Observatory Group for Nine Mainbelt Asteroids: 2016 July-September. Rotation Period and Physical Parameters". The Minor Planet Bulletin. 44 (1): 60–63. Bibcode:2017MPBu...44...60A. ISSN 1052-8091. Retrieved 16 November 2017. 
  10. ^ a b c d e Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 16 November 2017. 
  11. ^ a b "1346 Gotha (1929 CY)". Minor Planet Center. Retrieved 16 November 2017. 

External links[edit]