1650 Heckmann
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 11 October 1937 |
| Designations | |
| MPC designation | (1650) Heckmann |
|
Named after
|
Otto Heckmann (astronomer) |
| 1937 TG · 1929 SK 1940 NB · 1941 UA1 1943 DG · 1944 OC 1947 FA · 1951 GX 1952 SL1 · 1963 PB A906 OC · A909 DF |
|
| main-belt · Nysa | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.88 yr (40,133 days) |
| Aphelion | 2.8314 AU |
| Perihelion | 2.0395 AU |
| 2.4355 AU | |
| Eccentricity | 0.1626 |
| 3.80 yr (1,388 days) | |
| 65.729° | |
| 0° 15m 33.48s / day | |
| Inclination | 2.7499° |
| 199.76° | |
| 56.900° | |
| Physical characteristics | |
| Dimensions |
24.93±6.53 km 26.69±6.13 km 29.07±1.4 km (IRAS:6) 30.202±0.297 km 35.15±1.66 km |
|
12.05±0.05 h 14.893±0.005 h 14.9042±0.0154 h |
|
|
0.034±0.004 0.046±0.007 0.0497±0.005 (IRAS:6) 0.05±0.03 0.06±0.03 |
|
|
B–V = 0.638 U–B = 0.200 Tholen = F · F |
|
| 11.284±0.001 (R) · 11.40±0.25 · 11.56 · 11.61 | |
1650 Heckmann, provisional designation 1937 TG, is a rare-type Nysian asteroid from the inner regions of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 11 October 1937, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and later named after astronomer Otto Heckmann.
Heckmann is a member of the Polanian subgroup of the Nysa family of asteroids and shows a rare F-type spectrum in the Tholen classification scheme. It orbits the Sun at a distance of 2.0–2.8 AU once every 3 years and 10 months (1,388 days). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic.Heckmann was first identified as A906 OC at the discovering observatory in 1906. Its first used observation was taken at Heidelberg in 1909, when it was identified as A909 DF, extending the body's observation arc by 28 years prior to its official discovery observation.
French amateur astronomer René Roy obtained the first rotational lightcurve of Heckmann in September 2005. It gave a rotation period of 12.05 hours with a brightness variation of 0.06 in magnitude (U=2). A more refined lightcurve with a period of 14.893 hours and an amplitude of 0.16 magnitude was obtained by Australian amateur astronomer David Higgins at the Hunters Hill Observatory and collaborating stations in March 2008 (U=3). In September 2013, photometric observations at the Palomar Transient Factory, California, gave a low rated lightcurve with a similar period of 14.9042 hours (Δ 0.09 mag; U=1).
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