astro.wikisort.org - Asteroid
1944 Günter, provisional designation 1925 RA, is an asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter.
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 14 September 1925 |
| Designations | |
MPC designation | (1944) Günter |
Named after | Günter Reinmuth (son of discoverer)[2] |
Alternative designations | 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) |
| Aphelion | 2.7709 AU |
| Perihelion | 1.7080 AU |
Semi-major axis | 2.2394 AU |
| Eccentricity | 0.2373 |
Orbital period (sidereal) | 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° |
Argument of perihelion | 124.82° |
| Physical characteristics | |
| Dimensions | 4.905±0.070 km[3] |
Geometric albedo | 0.117±0.015[3] |
Absolute magnitude (H) | 13.8[1] |
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
- "JPL Small-Body Database Browser: 1944 Gunter (1925 RA)" (2017-03-21 last obs.). Jet Propulsion Laboratory. Retrieved 10 June 2017.
- 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.
- 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. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 9 December 2016.
- "1944 Gunter (1925 RA)". Minor Planet Center. Retrieved 9 December 2016.
- "LCDB Data for (1944) Günter". Asteroid Lightcurve Database (LCDB). Retrieved 11 April 2017.
- 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.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 21 July 2011 at the Wayback Machine)
- 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
На других языках
[de] (1944) Günter
(1944) Günter ist ein Asteroid des Hauptgürtels, der am 14. September 1925 von dem deutschen Astronomen Karl Wilhelm Reinmuth an der Landessternwarte Heidelberg-Königstuhl der Universität Heidelberg entdeckt wurde.- [en] 1944 Günter
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