7655 Adamries
| Discovery [1] | |
|---|---|
| Discovered by | F. Börngen |
| Discovery site | Karl Schwarzschild Observatory |
| Discovery date | 28 December 1991 |
| Designations | |
| MPC designation | 7655 Adamries |
Named after |
Adam Ries (mathematician)[2] |
| 1991 YM1 · 1977 BW | |
| main-belt · Nysa [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.49 yr (14,058 days) |
| Aphelion | 2.7496 AU |
| Perihelion | 2.0831 AU |
| 2.4163 AU | |
| Eccentricity | 0.1379 |
| 3.76 yr (1,372 days) | |
| 79.630° | |
| Inclination | 4.0161° |
| 103.41° | |
| 9.0455° | |
| Physical characteristics | |
| Dimensions | 3.60 km (calculated)[3] |
| 22.8758±0.1133 h[4] | |
| 0.21 (assumed)[3] | |
| S [3] | |
| 14.1[1] | |
|
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7655 Adamries, provisional designation 1991 YM1, is a stony asteroid from the inner regions of the asteroid belt, about 3.6 kilometers in diameter. It was discovered on 28 December 1991, by German astronomer Freimut Börngen at Karl Schwarzschild Observatory in Tautenburg, eastern Germany.[5]
The S-type asteroid is a member of the stony subgroup of the Nysa family, one of the smaller families in the main-belt, named after its namesake, 44 Nysa. It orbits the Sun at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,372 days). Its orbit shows an eccentricity of 0.14 and is tilted by 4 degrees to the plane of the ecliptic.[1] Photometric light-curve observations at the Palmoar Transient Factory in 2012 gave it a rotation period of 22.8758±0.1133 hours with an amplitude in brightness of 0.33 in magnitude,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21, a typical value for asteroids with a stony surface composition.[3]
The minor planet was named for the German mathematician Adam Ries (1492–1559), famous for authoring the first German arithmetic books, which were used over more than two hundred years and which explain the procedure of calculations in a clear manner. He made an effort to help the man in the street to appreciate arithmetic, which was considered at that time to be difficult. This minor planet was the 100th numbered discovery of astronomer Freimut Börngen.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 7655 Adamries (1991 YM1)" (2015-07-18 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (7655) Adamries. Springer Berlin Heidelberg. p. 608. ISBN 978-3-540-29925-7. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (7655) Adamries". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 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. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved January 2016.
- ↑ "7655 Adamries (1991 YM1)". Minor Planet Center. Retrieved January 2016.
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 (5001)-(10000) – Minor Planet Center
- 7655 Adamries at the JPL Small-Body Database
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