1139 Atami
| Discovery [1] | |
|---|---|
| Discovered by | O. Oikawa K. Kubokawa |
| Discovery site | Tokyo Ast. Obs. (389) |
| Discovery date | 1 December 1929 |
| Designations | |
| 1139 Atami | |
Named after | Atami (Japanese city)[2] |
| 1929 XE | |
| Mars-crosser [3][4] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.69 yr (31,297 days) |
| Aphelion | 2.4450 AU |
| Perihelion | 1.4502 AU |
| 1.9476 AU | |
| Eccentricity | 0.2554 |
| 2.72 yr (993 days) | |
| 325.80° | |
| 0° 21m 45.36s / day | |
| Inclination | 13.086° |
| 213.35° | |
| 206.56° | |
| Known satellites | 1 [5] |
| Earth MOID | 0.4701 AU |
| Physical characteristics | |
| Dimensions | 9.35 km (calculated)[4] |
| 15 h[6] 20 h[7] 24 h[8] 27.446±0.001 h[8] 27.45±0.01 h[8] 27.45±0.05 h[8] 27.472±0.002 h[8] 27.56±0.01 h[9] | |
| 0.20 (assumed)[4] | |
| B–V = 0.920 U–B = 0.497 S (Tholen), S (SMASS) S [4][10] | |
| 12.51[1][4] 12.59±0.37[10] 12.86±0.02[6] | |
1139 Atami, provisional designation 1929 XE, is a binary[5] asteroid and Mars-crosser, approximately 9 kilometers in diameter. It was discovered by Japanese astronomers Okuro Oikawa and Kazuo Kubokawa at the Tokyo Astronomical Observatory (389) on 1 December 1929.[3]
The stony S-type asteroid orbits the Sun at a distance of 1.5–2.4 AU once every 2 years and 9 months (993 days). Its orbit has an eccentricity of 0.26 and an inclination of 13° with respect to the ecliptic.[1]
In 2005, two rotational light-curves obtained at the U.S. Antelope Hills Observatory in New Mexico and by a collaboration of several European astronomers gave a rotation period of 27.56±0.01 and 27.446±0.001 hours with a brightness variation of 0.45 and 0.40 in magnitude, respectively (U=3/3).[8][9]
The minor planet was named after Atami, a Japanese city and harbor near Tokyo, Japan (H 106).[2]
Binary system
Photometric and Arecibo echo spectra observations in 2005 confirmed a 5 kilometer satellite orbiting at least 15 kilometers from its primary.[5] Due to the similar size of the primary and secondary the Minor Planet Center lists this as a binary companion.[11]
References
- ^ a b c d "JPL Small-Body Database Browser: 1139 Atami (1929 XE)" (2015-08-09 last obs.). Jet Propulsion Laboratory. Retrieved 22 August 2016.
- ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1139) Atami. Springer Berlin Heidelberg. p. 96. ISBN 978-3-540-00238-3. Retrieved 22 August 2016.
- ^ a b "1139 Atami (1929 XE)". Minor Planet Center. Archived from the original on 27 August 2016. Retrieved 22 August 2016.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ a b c d e "LCDB Data for (1139) Atami". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 2016.
- ^ a b c "Electronic Telegram No. 430". IAU Central Bureau for Astronomical Telegrams. 2006-03-14. Retrieved 2011-01-25.
- ^ a b Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 22 August 2016.
- ^ Lupishko, D. F.; Velichko, F. P.; Shevchenko, V. G. (June 1988). "Photometry of the AMOR type asteroids 1036 Ganymede and 1139 Atami". Astronomicheskii Vestnik: 167–173.InRussian. Bibcode:1988AVest..22..167L. ISSN 0320-930X. Retrieved 22 August 2016.
- ^ a b c d e f Behrend, Raoul. "Asteroids and comets rotation curves – (1139) Atami". Geneva Observatory. Retrieved 22 August 2016.
- ^ a b Koff, Robert A. (June 2006). "Lightcurves of asteroids 141 Lumen, 259 Alatheia, 363 Padua, 455 Bruchsalia 514 Armida, 524 Fidelio, and 1139 Atami". The Minor Planet Bulletin. 33 (2): 31–33. Bibcode:2006MPBu...33...31K. ISSN 1052-8091. Retrieved 22 August 2016.
- ^ a b 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 22 August 2016.
- ^ "Satellites and Companions of Minor Planets". IAU Central Bureau for Astronomical Telegrams. 2009-09-17. Archived from the original on 2011-01-21. Retrieved 2011-01-25.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)
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
- 1139 Atami at the JPL Small-Body Database
