100268 Rosenthal

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100268 Rosenthal
Discovery [1]
Discovered by F. Börngen
Discovery site Tautenburg
Discovery date 5 October 1994
MPC designation (100268) Rosenthal
Named after
Hans Rosenthal
(German TV host)[2]
1994 TL16 · 2003 AG8
main-belt · (inner)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 25.72 yr (9,396 days)
Aphelion 2.8517 AU
Perihelion 2.0283 AU
2.4400 AU
Eccentricity 0.1687
3.81 yr (1,392 days)
0° 15m 30.96s / day
Inclination 11.757°
Physical characteristics
Dimensions 3±1 km (calculated)[3]

100268 Rosenthal, provisional designation 1994 TL16, is an asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 5 October 1994, by German astronomer Freimut Börngen at the Karl Schwarzschild Observatory, Thuringia, eastern Germany.The asteroid was later named for German radio and TV host Hans Rosenthal.[2]

Orbit and classification[edit]

Rosenthal orbits the Sun in the inner main-belt at a distance of 2.0–2.9 AU once every 3 years and 10 months (1,392 days). Its orbit has an eccentricity of 0.17 and an inclination of 12° with respect to the ecliptic.[1] A first precovery was taken at the Siding Spring Observatory (DSS) in 1990, extending the asteroid's observation arc by 4 years prior to its discovery.[2]

Physical characteristics[edit]

Discovering Alfred-Jensch-telescope

Diameter estimate[edit]

Based on its absolute magnitude of 15.6, its diameter is between 2 and 5 kilometers, assuming an albedo in the range of 0.05 to 0.25.[3]

Since asteroids in the inner main-belt are often of a brighter silicaceous – rather than of a darker carbonaceous composition, with higher albedos, typically around 0.20, the asteroid's diameter might be on the lower end of NASA's published conversion table, as the lower the reflectivity (albedo), the larger the body's diameter for a given absolute magnitude.[3]

As of 2017, Rosenthal's effective size, shape, spectral type and composition, as well as its albedo and rotation period remain unknown.[1][4]


This minor planet was named in honour of German radio and TV host Hans Rosenthal (1925–1987), a German Jew who survived the Holocaust as a boy inside Germany and became one of the country's most popular TV show masters ever in the early 1980s. He died of cancer at the age of 61,[2] the approved naming citation was published by the Minor Planet Center on 13 April 2006 (M.P.C. 56615).[5]


  1. ^ a b c d e "JPL Small-Body Database Browser: 100268 Rosenthal (1994 TL16)" (2016-06-13 last obs.). Jet Propulsion Laboratory. Retrieved 28 June 2017. 
  2. ^ a b c d "100268 Rosenthal (1994 TL16)". Minor Planet Center. Retrieved 15 November 2016. 
  3. ^ a b c "Absolute Magnitude (H)". NASA/JPL. Retrieved 4 December 2015. 
  4. ^ "LCDB Data for (100268) Rosenthal". Asteroid Lightcurve Database (LCDB). Retrieved 28 June 2017. 
  5. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 15 November 2016. 

External links[edit]