Astronomy:1944 Günter
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 14 September 1925 |
| Designations | |
| (1944) Günter | |
| Named after | Günter Reinmuth (son of discoverer)[2] |
| 1925 RA · 1972 TY3 | |
| Minor planet category | main-belt · (inner) |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.52 yr (33,426 days) |
| |{{{apsis}}}|helion}} | 2.7709 AU |
| |{{{apsis}}}|helion}} | 1.7080 AU |
| 2.2394 AU | |
| Eccentricity | 0.2373 |
| Orbital period | 3.35 yr (1,224 days) |
| Mean anomaly | 166.20° |
| Mean motion | 0° 17m 38.76s / day |
| Inclination | 5.4892° |
| Longitude of ascending node | 212.44° |
| 124.82° | |
| Physical characteristics | |
| Dimensions | 4.905±0.070 km[3] |
| Geometric albedo | 0.117±0.015[3] |
| Absolute magnitude (H) | 13.8[1] |
1944 Günter, provisional designation 1925 RA, is an asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter.
It was discovered on 14 September 1925, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named after the discoverer's son, Günter Reinmuth.[2][4]
Orbit and classification
Günter orbits the Sun in the inner main-belt at a distance of 1.7–2.8 AU once every 3 years and 4 months (1,224 days). Its orbit has an eccentricity of 0.24 and an inclination of 5° with respect to the ecliptic.[1] As no precoveries were taken and no prior identifications were made, the body's observation arc begins at Heidelberg, one night after its official discovery observation.[4]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Günter measures 4.9 kilometers in diameter, and its surface has an albedo of 0.117.[3] As of 2017, its composition, rotation period and shape remain unknown.[1][5]
Naming
This minor planet was named by Karl Reinmuth after his son, Günter Reinmuth.[2] The official naming citation was published by the Minor Planet Center on 18 April 1977 (M.P.C. 4157).[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 1944 Gunter (1925 RA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001944.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1944) Günter". Dictionary of Minor Planet Names – (1944) Günter. Springer Berlin Heidelberg. p. 156. doi:10.1007/978-3-540-29925-7_1945. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 9 December 2016.
- ↑ 4.0 4.1 "1944 Gunter (1925 RA)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1944.
- ↑ "LCDB Data for (1944) Günter". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1944%7CGünter.
- ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. https://archive.org/details/dictionaryminorp2008schm.
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
- 1944 Günter at AstDyS-2, Asteroids—Dynamic Site
- 1944 Günter at the JPL Small-Body Database
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