1728 Goethe Link

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1728 Goethe Link
Discovery [1]
Discovered by Indiana University
(Indiana Asteroid Program)
Discovery site Goethe Link Obs.
Discovery date 12 October 1964
MPC designation (1728) Goethe Link
Named after
Dr Goethe Link
(observatory's founder)[2]
1964 TO · 1943 OA
1952 WH · 1955 KE
1956 VD · 1964 UB
1967 JD
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 73.78 yr (26,948 days)
Aphelion 2.7923 AU
Perihelion 2.3346 AU
2.5634 AU
Eccentricity 0.0893
4.10 yr (1,499 days)
0° 14m 24.36s / day
Inclination 7.1866°
Physical characteristics
Dimensions 14.58±0.33 km[4]
15.60 km (calculated)[3]
18.18±1.09 km[5]
81±2 h[6]
0.20 (assumed)[3]
11.10[5] · 11.19±0.27[7] · 11.30[4] · 11.4[1][3]

1728 Goethe Link, provisional designation 1964 TO, is a stony asteroid and relatively slow rotator from the central region of the asteroid belt, approximately 16 kilometers in diameter.

It was discovered on 12 October 1964, by Indiana University during its Indiana Asteroid Program at Goethe Link Observatory in Brooklyn, Indiana, United States.[8] It was named after American philanthropist and founder of the discovering observatory Goethe Link.[2]

Orbit and classification[edit]

Goethe Link orbits the Sun in the central main-belt at a distance of 2.3–2.8 AU once every 4 years and 1 month (1,499 days). Its orbit has an eccentricity of 0.09 and an inclination of 7° with respect to the ecliptic.[1] Goethe Link was first identified as 1943 OA at Heidelberg Observatory in 1943, extending the body's observation arc by 21 years prior to its official discovery observation.[8]

Physical characteristics[edit]

Goethe Link has been characterized as a common S-type asteroid.[3][7]

Rotation period[edit]

In October 2005, a rotational lightcurve of Goethe Link was obtained by French amateur astronomer Laurent Bernasconi. It gave a long rotation period of 81 hours with a brightness variation of 0.39 magnitude (U=2).[6]

Diameter and albedo[edit]

According to the surveys carried out the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Goethe Link measures 14.58 and 18.18 kilometers in diameter, and its surface has an albedo of 0.194 and 0.251, respectively.[5][4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 15.60 kilometers with an absolute magnitude of 11.4.[3]


This minor planet was named in honor of Indianapolis surgeon and philanthropist Dr Goethe Link. He was an enthusiastic amateur astronomer and generous supporter of astronomy, who built the Goethe Link Observatory in the late 1930s and donated it to Indiana University in 1948.[2] The official naming citation was published by the Minor Planet Center before November 1977 (M.P.C. 2882).[9]


  1. ^ a b c d "JPL Small-Body Database Browser: 1728 Goethe Link (1964 TO)" (2017-05-05 last obs.). Jet Propulsion Laboratory. Retrieved 7 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1728) Goethe Link. Springer Berlin Heidelberg. p. 137. ISBN 978-3-540-00238-3. Retrieved 21 December 2016. 
  3. ^ a b c d e f g "LCDB Data for (1728) Goethe Link". Asteroid Lightcurve Database (LCDB). Retrieved 21 December 2016. 
  4. ^ 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 21 December 2016. 
  5. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 21 December 2016. 
  6. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1728) Goethe Link". Geneva Observatory. Retrieved 21 December 2016. 
  7. ^ a b c 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 21 December 2016. 
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 December 2016. 

External links[edit]