1726 Hoffmeister
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 24 July 1933 |
| Designations | |
| MPC designation | 1726 Hoffmeister |
Named after |
Cuno Hoffmeister (astronomer) [2] |
|
1933 OE · 1955 FC 1955 HX · 1957 WD A924 UA | |
|
main-belt · (outer) [3] Hoffmeister family [4] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.40 yr (33384 days) |
| Aphelion | 2.9040 AU (434.43 Gm) |
| Perihelion | 2.6708 AU (399.55 Gm) |
| 2.7874 AU (416.99 Gm) | |
| Eccentricity | 0.041831 |
| 4.65 yr (1699.8 d) | |
| 275.36° | |
| 0° 12m 42.444s / day | |
| Inclination | 3.4830° |
| 230.98° | |
| 68.617° | |
| Earth MOID | 1.65576 AU (247.698 Gm) |
| Jupiter MOID | 2.17405 AU (325.233 Gm) |
| Jupiter Tisserand parameter | 3.327 |
| Physical characteristics | |
| Dimensions |
26.27 km [1] 17.35 km (calculated) [3] |
Mean radius | 13.135 ± 0.65 km |
| 11.7058 h (0.48774 d) [1][5] | |
|
0.0370 ± 0.004 [1] 0.057 (assumed) [3] | |
|
SMASS = Cb C [3] | |
| 12.3 | |
|
| |
1726 Hoffmeister, provisional designation 1933 OE, is a dark, carbonaceous asteroid from the outer region of the asteroid belt, about 26 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 24 July 1933.[6]
The C-type asteroid with a Cb-subtype in the SMASS taxonomy, orbits the Sun at a distance of 2.7–2.9 AU once every 4 years and 8 months (1,701 days). Its orbit shows an eccentricity of 0.04 and is tilted by 3 degrees to the plane of the ecliptic. It has a rotation period of 11.7 hours[5] and an very low geometric albedo of 0.04. It is the lowest-numbered and probably the largest member of the small, very compact dynamical Hoffmeister family. Based upon the low albedo, it was most likely formed from the breakup of a carbon-rich asteroid about 50–100 km in diameter within the past several hundred million years.[4]
The minor planet was named in memory of German astronomer Cuno Hoffmeister (1892–1968), founder and later director of the Sonneberg Observatory after which the asteroid 1039 Sonneberga is named. He was best known as a prolific discoverer and observer of variable stars, for his extensive work on meteors, and for the discovery of a comet and several minor planets. The minor planet 4183 Cuno and the lunar crater Hoffmeister are also named in his honor.[2]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 1726 Hoffmeister (1933 OE)" (2015-06-14 last obs.). Jet Propulsion Laboratory. Retrieved 21 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1726) Hoffmeister. Springer Berlin Heidelberg. p. 137. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 "LCDB Data for (1726) Hoffmeister". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
- 1 2 Migliorini, F.; Manara, A.; di Martino, M.; Farinella, P. (June 1996). "The Hoffmeister asteroid family: inferences from physical data.". Astronomy and Astrophysics. Bibcode:1996A&A...310..681M. Retrieved November 2015.
- 1 2 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:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved November 2015.
- ↑ "1726 Hoffmeister (1933 OE)". Minor Planet Center. Retrieved November 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- 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
- 1726 Hoffmeister at the JPL Small-Body Database
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