| Discovery[1] | |
|---|---|
| Discovered by | L. Kohoutek |
| Discovery site | Bergedorf Obs. |
| Discovery date | 22 August 1969 |
| Designations | |
| (11436) 1969 QR | |
| 1969 QR · 1988 DP | |
| main-belt · Flora[2] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.51 yr (17,352 days) |
| Aphelion | 2.5411 AU |
| Perihelion | 1.9081 AU |
| 2.2246 AU | |
| Eccentricity | 0.1423 |
| 3.32 yr (1,212 days) | |
| 195.20° | |
| 0° 17m 49.2s / day | |
| Inclination | 7.3470° |
| 239.46° | |
| 56.011° | |
| Physical characteristics | |
| Dimensions | 3.74 km (calculated)[2] |
| 2.65 h[3] | |
| 0.24 (assumed)[2] | |
| S[2] | |
| 14.3[1][2] · 14.60±0.33[4] | |
(11436) 1969 QR, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3.7 kilometers in diameter. It was discovered on 22 August 1969, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany.[5]
Description
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,212 days). Its orbit has an eccentricity of 0.14 and an inclination of 7° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc starts with its discovery observation in 1969.[5]
A rotational lightcurve for this asteroid was published by several Hungarian astronomers in August 2005. The photometric observations gave a rotation period of 2.65 hours with a brightness variation of 0.27 magnitude (U=2).[3]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its orbital family – and calculates a diameter of 3.7 kilometers.[2]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 28 September 1999.[6] As of 2018, it has not been named.[5]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 11436 (1969 QR)" (2017-02-23 last obs.). Jet Propulsion Laboratory. Retrieved 26 May 2017.
- 1 2 3 4 5 6 "LCDB Data for (11436)". Asteroid Lightcurve Database (LCDB). Retrieved 8 September 2016.
- 1 2 Székely, P.; Kiss, L. L.; Szabó, Gy. M.; Sárneczky, K.; Csák, B.; Váradi, M.; et al. (August 2005). "CCD photometry of 23 minor planets". Planetary and Space Science. 53 (9): 925–936. arXiv:astro-ph/0504462. Bibcode:2005P&SS...53..925S. doi:10.1016/j.pss.2005.04.006. Retrieved 8 September 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 8 September 2016.
- 1 2 3 "11436 (1969 QR)". Minor Planet Center. Retrieved 8 September 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 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 (10001)-(15000) – Minor Planet Center
- (11436) 1969 QR at AstDyS-2, Asteroids—Dynamic Site
- (11436) 1969 QR at the JPL Small-Body Database